Dissertations / Theses on the topic 'Dissertations – Geography and environmental studies'

Thesis (MA)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: This study acknowledges the status quo in South Africa as a country in transformation. Leaders concur that people live under the spell of the evil triplets of poverty, inequality and unemployment amidst the need for development and economic growth. In order to initiate positive change, the 1996 Constitution of South Africa supports integrated environmental management (IEM) and sustainability principles towards ecological, economic and social compromise. Furthermore, the National Environmental Management Act (NEMA) was legislated in 1996 along with the mandatory environmental impact assessment (EIA) tool in 1998. Despite this legislation being of global standards, current discourse highlights the need for new strategies and tools to improve IEM. The constraint lies in the implementation of policy as the EIA process is limited by inconsistency and project specific focus. Fortuitously technology has developed to levels where web-based tools encourage spatial awareness and individual responsibility for the environment. Usage of participative GIS supported by best practice in governance has the potential to successfully drive IEM. This research builds on the integration of a policy instrument (EIA), spatial technology (GIS), development and human factors (people) as pillars of transdisciplinary methodology to collaborate and gather new information to expand knowledge and augment existing processes. The study objectives required rigorous research and involved a wide range of participants in a feasibility study to provide details of the viability of integrating GIS usage into EIA conduct in South Africa. Participants in the research were selected from the geographical scope of Cape Town and represent involved parties in EIA and potential users of GIS in EIA. The legislative scope is the Western Cape Province. Triangulation, a mixed method approach, was employed to collect and collate qualitative and quantitative information based on the opinions of involved parties in the IEM, EIA and GIS domains. Primary data collection methods included observation, fieldwork, informal, formal and focus group discussions as well as an e-mail questionnaire and a Likert scale e-survey. The knowledge gained was evaluated using SWOT and graphics. The findings indicated that the majority of participants agreed that technology and skills are available to design and develop a web-based application for GIS usage in EIA. However, from the outcome of the study the main challenge is not related to technical skills and capacity, but to align the EIA with IEM sustainability principles for effective decision making and self-regulation. It is therefore envisaged that web-based GIS usage in EIA based on IEM has the potential to reconnect the EIA process by uniting people in knowledge with easy access to information from a central data base repository to an on-line web-based platform that links time and space to inform decision making.<br>AFRIKAANSE OPSOMMING: Die uitgangspunt van hierdie studie is dat Suid-Afrika 'n land in transformasie is en die behoefte aan ontwikkeling en ekonomiese groei van kardinale belang is weens die armoede, ongelykheid en werkloosheid waaronder baie mense lei. Effektiewe omgewingsbestuur is uiters belangrik om omgewingsbesoedeling en agteruitgang te verhoed. Ten einde 'n positiewe verandering te inisieer, ondersteun die 1996 Grondwet van Suid-Afrika geïntegreerde omgewingsbestuur (GOB) en volhoubaarheidsbeginsels teenoor ekologiese, ekonomiese en sosiale kompromie. Die 1996 Nasionale Wet op Omgewingsbestuur (NEMA) het die omgewingsimpakstudie (OIS)-instrument in 1998 verpligtend verklaar. Die OIS wetgewing is gebaseer op hoë internasionale standaarde, maar ten spyte hiervan beklemtoon die huidige diskoers die behoefte aan nuwe strategieë om OIS in die praktyk effektief te belyn met die GOB beleid. Tans word die OIS proses beperk deur teenstrydigheid tussen gebruikers van die proses sowel as projekspesifieke fokus. Tegnologie het ontwikkel tot 'n vlak waar webgebaseerde GIS ruimtelike bewustheid aanmoedig en individuele verantwoordelikheid vir die omgewing aanbeveel en ondersteun word. Deelnemende GIS, ondersteun deur goeie regering, het die potensiaal om OIS en GOB suksesvol in die praktyk te implementer. Hierdie navorsing bou voort op die integrasie van 'n beleidsinstrument (OIS), ruimtelike tegnologie (GIS) asook ontwikkeling en menslike faktore (mense) en ondersteun die transdissiplinêre metodologie om nuwe inligtig te versamel en vryelik te deel. Die studiedoelwitte het streng navorsingsmetodologie vereis deur 'n wye verskeidenheid van deelnemers te betrek in 'n ondersoek na die haalbaarheid van die integrasie van GIS gebruik in OIS in Suid-Afrika. Deelnemers aan die navorsing is gekies uit die geografiese domein van Kaapstad en was betrokke partye in omgewingsbestuur en potensiële gebruikers van GIS in OIS. Die wetgewende domein is die Wes-Kaap. 'n Gemengde-metode benadering is gevolg om kwalitatiewe en kwantitatiewe inligting te versamel en was gebaseer op die menings van die betrokke partye in die IEM, OIE en GIS terreine. Die kennis is geëvalueer met behulp van SWOT analise en grafika. Die bevindinge dui aan dat die meerderheid van die deelnemers saamstem dat tegnologie en vaardigheid beskikbaar is om 'n program vir GIS-gebruik in OIS te ontwikkel. Die uitslag van die studie dui daarop dat die grootste uitdaging vir effektiewe besluitneming en self-regulering nie verband hou met tegniese vaardighede en kapasiteit nie, maar om die OIS te verenig met GOB-volhoubaarheid beginsels. Die vooruitsig is dus dat web-gebaseerde GIS gebruik in OIS gebaseer op GOB die potensiaal het om mense met kennis te verenig en omgewingsbestuur effektief in te lig.

Thesis (MA (Geography and Environmental Studies))--University of Stellenbosch, 2005.<br>Scenic beauty, or landscape aesthetics, should be regarded as a valuable resource, to be protected and enhanced in order to generate income. Current environmental impact assessment (EIA) studies do not include the evaluation of scenic beauty as a resource properly, due to the lack of effective evaluation methods. A general dilemma lies in objectively evaluating beauty. If scenic preferences can be associated consistently with the physical landscape features, the latter can be used as predictors of the former. Analysis of aesthetics can therefore be done with a degree of objectivity, based on these general preferences. A large number of these preferences are morphologically measurable. In other words, these preferences can be mapped in a Geographical Information System (GIS), rated, and evaluated quantitatively. The first step in objectively evaluating landscape aesthetics entailed identification and compilation from the literature of conceptual components in a landscape, i.e. the units defining a landscape. Four components were identified: landform, vegetation, water features and man-made features. Each of the four components can be subdivided into several elements. Secondly, scenic preferences that can be consistently associated with landscape features were identified. It was found that any subjective experience of landscape aesthetics would be either one of calmness or one of excitement. The presence or absence of the landscape elements, and specific combinations of elements and element variables within the context of an individual landscape, will determine the type and extent of the aesthetic experience of the viewer. Finally, this theory was put into practice. Coverages were created of a test region, with landscape elements as the features of the coverages, and element variables or characteristics as feature attributes. These landscape elements, as they enhance either calmness or excitement, were quantified by assigning value ratings to the elements according to the extent of the influence of the elements on the aesthetic value of the landscape. ArcInfo GRID functionality was used to convert the coverages to raster (or grid) overlays, using the element variables enhancing both calmness and excitement. A simple cumulative summing function was used to derive an aggregate Calm Aesthetic Experience map by adding grids enhancing calmness. An aggregate Exciting Aesthetic Experience map was constructed by adding grids enhancing excitement. Finally, these two grids were summed in order to construct a Total Aesthetic Experience map, which is an indication of the total aesthetic value of the test region. The outcome of this research was a method for analysis and objective evaluation of a landscape, using a GIS for data creation, analysis and map construction. The resultant map is an indication of aesthetic value, showing the test region graded according to intrinsic aesthetic value.

Thesis (MA)--Stellenbosch University, 2001.<br>ENGLISH ABSTRACT: A shortest or most economical route can easily be determined by using a geographical information system (GIS). Unfortunately, most systems compute distances in two dimensional space. As computer-technology moves towards three dimensional applications, it is essential that GIS keeps up with this trend. In this research, the network module of Arc View (using Avenue) is customized, so that topographical slope is considered in determining the shortest or most economical route. Two buttons were added to the normal Arc View interface. By doing it this way, the user has the full functionality of Arc View, as well as the use of the new application. One button initiates a dialogue for capturing the economic parameters (fuel efficiency, oil usage, tyre usage, maintenance costs and capital costs) of a vehicle. The other button selects a route network and uses a vehicle's economic parameters (as determined by the user) to calculate a most economical route. This thesis describes the procedure, logic and methodology followed in adding a most economical route-selection function to Arc View. It also demonstrates the importance of incorporating three dimensional space for determining a most economical route. The new function currently calculates a most economical route, based on vehicle running costs for Heavy Goods Vehicles (HGV's). The application performs satisfactorily, but there is scope for further development and refinement, both of the economical formulae for computing costs as well as of the graphic user interface (GUl). The flexibility of the system can be enhanced by providing for additional classes of vehicles.<br>AFRIKAANSE OPSOMMING: 'n Kortste of mees ekonomiese ritroete kan maklik met behulp van 'n GIS (Geografiese Inligtingstelsel) vasgestel word, maar die meeste stelsels bereken afstande in 'n plat vlak (in twee-dimensionele ruimte). Soos die rekenaartegnologie ontwikkel, word meer drie-dimensionele ruimtelike toepassings geskep, dus moet GIS-tegnologie ook toenemend die derde dimensie inkorporeer. In hierdie navorsing is Arc View se netwerk module met Avenue aangepas dat dit topografiese helling outomaties inreken by die bepaling van 'n kortste of mees ekonomiese roete. Twee knoppies is tot die normale Arc View koppelvlak bygevoeg. Deur dit so te doen, het die gebruiker toegang tot die volle funksionaliteit van Arc View en dié van die nuwe funksie. Een knoppie inisieer die koppelvlak waarmee die ekonomiese parameters (brandstof verbruik, olie verbruik, band verbruik, kapitaal koste en onderhoudskoste) van 'n voertuig opgestel word. Die ander knoppie selekteer 'n padnetwerk en gebruik 'n voertuig se ekonomiese parameters (soos gedefinieer deur die gebruiker) om 'n mees ekonomiese roete vas te stel. Hierdie tesis beskryf die prosedures, logika en metodologie waarvolgens die nuwe roeteseleksie funksie by Arc View geïnkorporeer is. Dit het ook gedemonstreer dat dit noodsaaklik is om drie-dimensionele ruimte by die bepaling van 'n mees ekonomiese roete in te sluit. Die nuwe funksie bepaal tans 'n ekonomiese roete gebaseer op die voertuig-loopkoste van swaarvoertuie. Dit funksioneer bevredigend, maar daar is steeds moontlikhede vir verdere ontwikkeling en verfyning, beide van die ekonomiese kosteberekeningsformules en die gebruikers-koppelvlak. Deur ook vir ander klasse voertuie voorsiening te maak kan die plooibaarheid van die stelselook uitgebrei word.

Thesis (PhD (Geography and Environmental Studies))--University of Stellenbosch, 2011.<br>ENGLISH ABSTRACT: In South Africa the government’s progress in developing policy in support of people-centred Integrated Coastal Management (ICM), as expressed in the Coastal Policy and the Integrated Coastal Management Act, is commended. However several challenges pertaining to policy implementation remain which constitute the primary need for this research. Indeed, South Africa already has many pieces of the ICM implementation puzzle, but a structured framework or model to assist in achieving a workable, integrated system is still lacking. The aim of this research is to design an implementation model for ICM within the South African context and to propose a novel and innovative generic process for the design and refinement of such models. This aim is achieved by addressing four research questions, namely: (i) Can contextual, country-specific knowledge be harnessed to design a prototype ICM implementation model for South Africa?; (ii) Is the prototype design workable (or compatible) in the existing coastal marine statutory and governance system of South Africa (i.e. a practical validation)?; (iii) Is the prototype model for South Africa scientifically credible and how can insights into the uniformities contributing to improved integrated environmental management (IEM) and ICM be applied to assess such credibility as well as inform refinements to the model (i.e. a theoretical validation)?; and (iv) Can a generic process for the design and refinement of country-specific implementation models be derived from the research methodology applied in this study? Design science was selected as the primary strategy of inquiry for this study and a mixed-methods approach was used, claiming that the specific focus is real-world practice. Qualitative and quantitative methods are used to execute this research. This research demonstrates a method where experience and country-specific knowledge are harnessed to design a prototype ICM implementation model for South Africa and, in doing so, experientially capturing important emerging paradigms for improved ICM implementation – as identified in the scientific literature – namely the ecosystem-based management, spatial planning and cooperative environmental governance paradigms. In the prototype design, the ecosystem-based management and spatial planning paradigms are combined with traditional problems- or issues-based approaches, applied in many of the earlier ICM models. Personal experience also confirmed the importance of informed and well-established actor involvement in coastal management (cooperative environmental management) which manifested in the inclusion of the important avenues of actor involvement (i.e. the support elements) in the prototype model. Moreover, South Africa’s sector-based governance system is accommodated in the design by anchoring the management programmes component (remaining largely sector-based) between the resource vision, objectives and zoning component and the monitoring and evaluation component, implying that management programmes remain grounded in an ecosystem-based approach and subservient to the agreed vision and objectives, and needs of the coastal ecosystem. A practical validation, using the management of land-based activities as case study, reveals that approaches to coastal management in South Africa, grounded in the current statutory framework of the country, can largely be aligned with the approach proposed in the prototype implementation model. Indeed it is inefficiency or a lack of operationalisation of existing legislation that may pose the biggest challenge for effective implementation of this model. Because the prototype model is designed to accommodate sectorbased management programmes, it can be extended to accommodate sectors or activities other than those presented in the case study, such as conservation, transportation (shipping) and fisheries. Consequently, the prototype model can be applied in South Africa without any substantive adaptation of the existing statutory framework. Clearly, the challenge of effectively operationalising existing statutes remains. A critical review of relevant scientific literature provides information on and understanding of uniformities in IEM, the broader domain within which ICM is nested, using the key paradigms that contribute significantly to the improved implementation of IEM, to express such uniformities. It became apparent from studying the evolution of ICM over the last two decades that many of the key paradigms that significantly contribute to improved implementation of IEM have also proved valuable in the implementation of ICM. The insight gained from scientific literature was applied in determining fourteen evaluation criteria with which to assess of the scientific credibility of the prototype design. The subsequent assessment of the prototype design confirmed that the collective learning in IEM (and ICM) implementation over the last two decades is consolidated in this prototype design, apart from two aspects, namely scientific support networks and sustainable financial support. These were not initially defined as key components for ICM implementation in South Africa, but in retroflection proved to be valid; South Africa has established independent scientific networks outside the realm of government that coordinate scientific research in support of coastal management, and the explicit recognition of these scientific support networks in the prototype model will highlight their importance to ICM. Also, the inclusion of a sustainable financial support mechanism as a key component in the model will significantly enhance the importance and necessity of having a sound funding strategy associated with ICM implementation in South Africa. Considering the prototype design and its practical and theoretical validation, two interdependent but distinctive adaptive cycles emerged. The refined model therefore incorporates these dual, adaptive cycles coined the resource and actor cycles. The resource cycle is much in alignment with the original components of the prototype design, but a distinct modification is the inclusion of the demarcation of the geographical boundaries of coastal management units as a separate component in the model. In essence, the components in the actor cycle represent the key actor groups involved in the governance system for ICM. These components reflect the original support elements in the prototype design but include the two additional components identified in the theoretical validation, namely scientific support and financial support mechanisms. The revised model with its dual, adaptive cycles contributes an implementation perspective to the growing body of scientific literature on social-ecological systems. In this literature, the ecological system is viewed as intricately linked with and affected by the social system as depicted by the interlinked resource and actor cycles of the revised model. Further, a practical and novel three-step generic process for the design and refinement of country-specific ICM implementation models is proposed, based on the design-science approach applied in this study. First, the process involves the design of a prototype model, primarily based on local knowledge within the countryspecific context. Second, the process entails dual validation procedures, namely an empirical validation and theoretical validations. Finally, the outcome of the validation process is used to refine and improve the prototype design. Further, the refined model design proposed in this study is posed as a suitable prototype design for countries with similar sector-based coastal management milieus to South Africa. The research reported here does not offer a complete solution to the identified problem as there are manifold angles from which to approach effective and sustainable ICM. In this study an implementation angle was chosen, more specifically from a practical environmental management perspective that recognises important economic and social elements and interactions. Opportunities exist for researchers in other expert fields to investigate ICM policy implementation in South Africa from their perspectives. For example, ICM can also be viewed from purely economic, public administration, social or educational stances. In particular, techniques such as science mapping could be used to identify whether paradigms exist that constitute uniformities in IEM and ICM in addition to the ten key paradigms studied in the research. Any new characteristics deriving from the analysis of the additional paradigms can then be used to refine the evaluation criteria for the assessment of the scientific credibility of ICM implementation models. Knowledge gained and innovations made in such studies can be integrated into the ICM implementation model presented here to continuously improve its operationalisation. This research provides two main products, namely a workable and scientifically sound implementation model for ICM in the South African context and a generic process for the design and refinement of countryspecific ICM implementation models, both requiring adaptive management approaches.<br>AFRIKAANSE OPSOMMING: In Suid-Afrika is die regering se vordering in die ontwikkeling van beleid ter ondersteuning van volksgesentreerde Geïntegreerde kusbestuur, (GKB), soos verwoord in die Kusbeleid en die Geïntegreerde Kusbestuurwet, prysenswaardig. Daar is egter nog verskeie uitdagings met betrekking tot die uitvoering van beleid wat neerkom op die primêre behoefte vir hierdie navorsing. Suid-Afrika het inderdaad reeds baie stukkies van die GKB-implementeringslegkaart, maar 'n gestruktureerde raamwerk of model om te help met die daarstelling van ‘n werkbare, geïntegreerde stelsel ontbreek nog. Die doel van hierdie navorsing is om 'n implementeringsmodel vir GKB te ontwerp binne die Suid- Afrikaanse konteks en 'n nuwe en innoverende algemene proses vir die ontwerp en verfyning van sulke modelle voor te stel. Hierdie doelstelling is bereik deur vier navorsingsvrae aan te spreek, naamlik: (i) Kan kontekstuele, land-spesifieke kennis ingespan word om ‘n prototipe GKB-implementeringsmodel vir Suid- Afrika te ontwerp? (ii) Is die prototipe-ontwerp werkbaar binne (of vergelykbaar met) die bestaande kusmariene statutêre- en bestuursstelsel van Suid-Afrika (d.w.s. ‘n praktiese validasie)? (iii) Is die prototipemodel vir Suid-Afrika wetenskaplik-geloofwaardig en hoe kan insig in die eenvormighede wat bydra tot verbeterde geïntegreerde omgewingsbestuur (GOB) en GKB toegepas word om sodanige geloofwaardigheid te bepaal, asook die verfyning van die model in te lig (d.w.s. ‘n teoretiese validasie)?; en (iv) Kan 'n algemene proses vir die ontwerp en verfyning van landspesifieke implementeringsmodelle afgelei word van die navorsingsmetodiek wat in hierdie studie toegepas is? Ontwerpwetenskap is gekies as die primêre strategie van ondersoek vir hierdie studie en 'n gemengde-metode benadering is gebruik, met die aanspraak dat die spesifieke fokus werklike wêreldspraktyk is. Kwalitatiewe en kwantitatiewe metodes word gebruik om hierdie navorsing uit te voer. Hierdie navorsing demonstreer 'n metode waar eie ervaring en land-spesifieke kennis ingespan is om 'n prototipe GKB-implementeringsmodel vir Suid-Afrika te ontwerp, en in die proses is belangrike opkomende paradigmas vir verbeterde GKB-implementering – soos geïdentifiseer in die wetenskapsliteratuur – ondervindelik vasgevang, naamlik die ekostelsel-gebaseerde bestuur, ruimtelike beplanning en samewerkende omgewingbestuur paradigmas. In die prototipe-ontwerp, is die ekosisteem-gebaseerde bestuurs-en ruimtelike beplanning paradigmas met tradisionele probleem- of uitkoms-gebaseerde benaderings gekombineer – soos toegepas in baie van die vorige GKB-modelle. Persoonlike ondervinding het ook die belangrikheid van ingeligte en goed gevestigde akteursbetrokkenheid in kusbestuur (samewerkende omgewingsbestuur) bevestig wat uitgeloop het op die insluiting van die belangrike roetes van akteursbetrokkenheid (d.w.s die ondersteuningselemente) in die prototipe-model. Verder is Suid-Afrika se sektorgebaseerde bestuurstelsel geakkommodeer in die ontwerp deur die Programbestuurskomponent (grootliks sektorgebaseerd) te anker tussen die hulpbron visie, doelwitte en sonerings komponent en die monitering en evaluering komponent, wat impliseer dat die bestuursprogramme gegrond bly binne 'n ekosisteem-gebaseerde benadering en ondergeskik bly aan ooreengekomde visie en doelwitte, en behoeftes van die kusekosisteem. 'n Praktiese validasie, waar die bestuur van land-gebaseerde aktiwiteite as gevallestudie gebruik word, toon dat die kusbestuursbenadering in Suid-Afrika, gegrond op die huidige statutere raamwerk van die land, grootliks in lyn gebring kan word met die benadering soos voorgestel in die prototipe implementeringsmodel. Inderdaad dit is die onbevoegdheid of 'n gebrek aan operasionalisering van die bestaande wetgewing wat die grootste uitdaging vir die doeltreffende implementering van hierdie model inhou. Omdat die prototipemodel ontwerp is om sektorgebaseerde bestuursprogramme te akkommodeer, kan dit uitgebrei word na ander sektore of aktiwiteite as dié wat in die gevallestudie getoon is, soos bewaring, vervoer (skeepsvervoer) en vissery. Gevolglik kan die prototipe-model toegepas word in Suid-Afrika sonder enige substantiewe aanpassing van die bestaande statutêre raamwerk. Duidelik, die effektiewe operasionaliseer van bestaande wette bly ‘n uitdaging. 'n Kritiese oorsig van die toepaslike wetenskapsliteratuur verskaf inligting oor, en begrip van, die ooreenstemmings in GOB, die breër gebied waarbinne GKB ingebed is, deur gebruik te maak van die sleutelparadigmas wat ‘n beduidende bydrae tot die verbetering van die implementering van GOB maak. Dit het duidelik geword uit die bestudering van die evolusie van GKB oor die laaste vier dekades dat baie van die sleutelparadigmas wat bydra tot verbeterde implementering van GOB ook waardevol blyk te wees in die uitvoering van die GKB. Die insig verkry uit wetenskapliksliteratuur is aangewend om die veertien evalueringsmaatstawwe saam te stel vir die beoordeling van die wetenskaplike geloofwaardigheid van die prototipe-ontwerp. Die daaropvolgende beoordeling van die prototipe-ontwerp het bevestig dat die kollektiewe kennis in GOB (en GKB) implementering oor die afgelope twee dekades in hierdie prototipe ontwerp gekonsolideer is, behalwe vir twee aspekte, naamlik wetenskapsondersteuningsnetwerke en volhoubare finansiële ondersteuning. Dit was aanvanklik nie gedefinieer as belangrike komponente vir GKBimplementering in Suid-Afrika nie, maar het in heroorweging tog geldig geblyk te wees; Suid-Afrika het onafhanklike wetenskapsnetwerke wat wetenskapsnavorsing ter ondersteuning van kusbestuur buite die regeringsraamwerk koördineer en die uitdruklike erkenning van hierdie wetenskapsondersteuningsnetwerke binne die prototipe-model sal die belangrikheid daarvan in GKB beklemtoon. Ook, die insluiting van 'n volhoubare finansiële ondersteuningsmeganisme as 'n sleutel komponent in die model, sal die belangrikheid en noodsaaklikheid om ‘n 'n gesonde finansiële strategie wat verband hou met GKB-implementering in Suid- Afrika daar te stel, aansienlik verhoog. Na oorweging van die prototipe-ontwerp en die praktiese en teoretiese validasies het twee interafhanklike, maar kenmerkende aanpasbare siklusse te voorskyn gekom. Die verfynde model sluit dus hierdie dubbele, aanpasbare siklusse in, genaamd die hulpbron- en akteurssiklusse. Die hulpbronsiklus is meestal in ooreenstemming met die oorspronklike komponente van die prototipe-ontwerp, maar ’n duidelike verandering is die insluiting van die afbakening van kusbestuureenheidsgrense as 'n aparte komponent in die model. In wese verteenwoordig die komponente binne die akteurssiklus die sleutel-akteursgroepe wat betrokke is in die GKB-bestuurstelsel. Hierdie komponente reflekteer die oorspronklike ondersteuningselemente binne die prototipe-ontwerp maar sluit die twee addisionele komponente wat in die teoretiese validasie geïdentifiseer is in, naamlik wetenskaplike ondersteuning en finansiële ondersteuningsmeganismes. Die hersiende model met die twee interafhanklike, aanpasbare siklusse dra ’n implementeringsperspektief by tot die groeiende liggaam van wetenskapliksliteratuur rondom sosiaalekologiese stelsels. In hierdie literatuur word die ekologiese stelsel gesien as intrinsiek gekoppel aan en geaffekteer deur die sosiale stelsel, soos voorgestel in die intergekoppelde hulpbron- en akteurssiklusse in die hersiende model. Verder is 'n praktiese en nuwe, generiese drie-stap-proses vir die ontwerp en verfyning van land-spesifieke GKB- implementeringsmodelle voorgestel, gebaseer op die ontwerp-wetenskaplike benadering wat in hierdie studie toegepas is. Eerstens behels die proses die ontwerp van 'n prototipe-model, hoofsaaklik gebaseer op plaaslike kennis binne die land-spesifieke konteks. Tweedens behels die proses dubbele validasie-prosedures, naamlik 'n empiriese validasie en ‘n teoretiese validasie. Ten slotte word die resultaat van die validasieprosedures gebruik om die prototipe-ontwerp te verfyn en te verbeter. Verder word die verfynde modelontwerp wat in hierdie studie voorgestel word, gereken as ‘n geskikte prototipe-ontwerp vir lande met soortgelyke sektorgebaseerde kusbestuursmilieus as Suid-Afrika. Die navorsing wat hier aangebied word is nie 'n volledige oplossing vir die geïdentifiseerde probleem nie, aangesien daar verskeie hoeke is waaruit doeltreffende en volhoubare GKB benader kan word. In hierdie studie is 'n implementeringshoek gekies, meer spesifiek 'n praktiese omgewingsbestuur perspektief waarbinne belangrike ekonomiese en sosiale elemente en interaksies erken word. Opwindende geleenthede bestaan vir navorsers binne ander kundigheidsvelde om GKB-beleidsimplementering in Suid-Afrika te ondersoek vanuit hulle perspektiewe. Byvoorbeeld, GKB kan ook ondersoek word vanuit suiwer ekonomiese, publieke administrasie, sosiale of opvoedkundige oogpunte. Meer spesifiek, tegnieke soos wetenskapskatering kan gebruik word om vas te stel of daar paradigmas bestaan wat neerkom op eenvorminghede binne GOB en GKB, benewens die tien sleutelparadigmas wat in hierdie navorsing bestudeer is. Enige nuwe eienskappe afgelei van die analise van die addisionele paradigmas kan dan gebruik word om die evalueringsmaatstawwe vir die asessering van die wetenskaplike geloofwaardigheid van GKB implementeringsmodelle te verfyn. Kennis en innovasie van sulke studies kan opgeneem word in die GKB-implementeringsmodel wat hier aangebied word om voortdurend die operasionalisering daarvan te verbeter. Die navorsing lewer twee hoofprodukte, naamlik ’n werkbare en wetenskaplike geloofwaardige GKBimplementeringsmodel binne die Suid-Afrikaanse konteks en 'n algemene proses vir die ontwerp en verfyning van land-spesifieke implementeringsmodelle vir GKB beide met aanpasbare bestuur as vereiste.

Thesis (PhD)--Stellenbosch University, 2012.<br>Includes bibliography<br>ENGLISH ABSTRACT: During the Decade of Education for Sustainable Development (DESD) (2004-2015), better teaching and learning of environmental education and education for sustainable development (EE and ESD) in schools is one of the main responses to the worsening state of the global environment. Environmental concerns are integrated into the South African school curricula; in the General Education and Training (Grades R-9) (GET) and Further Education and Training (FET) phases through the principles that underpin the curricula such as social justice, a healthy environment, human rights and inclusivity. While a cross-curricula approach to teaching and learning is followed in the GET phase, environmental concerns are infused in each subject at FET level. Because geography deals with human-environment relationships and is interdisciplinary, it is considered to be one of the main vehicles for teaching EE and ESD. To respond to the need for better teaching and learning of EE and ESD during the DESD, the main aim of this research project was to find out how EE and ESD are being implemented through the geography curriculum in South African secondary schools at FET level. The investigation sought answers to questions related to: opportunities for teaching EE and ESD in the geography National Curriculum Statement; the geography teachers’ perspectives on EE and ESD; the extent to which the teachers incorporate the teaching of EE and ESD in the geography lessons; pedagogical approaches used by the geography teachers; and, the barriers to teaching environmental concerns through the geography curriculum. A qualitative case study research design, underpinned by the interpretive research paradigm, was used. A sample of 10 senior geography teachers comprising 8 males and 2 females participated in the study. They were drawn from five Western Cape secondary schools selected through purposeful sampling in such a way that the sample of schools is representative of the socio-economic and sociocultural context of the Western Cape as far as possible. Data were generated from biographic questionnaires and semi-structured interviews. Data were also generated from lesson observation and the analysis of documents such as the geography NCS, work schedules and lesson plans. The use of different research instruments ensured the triangulation of data sources in order to address issues of validity and reliability. The qualitative data were then analysed through thematic analysis. The study found that the sustainable development theme is central to the curriculum. Additionally, strategies of implementing EE and ESD such as the enquiry approach, the issues-based approach and the need to impart critical thinking skills are suggested in the curriculum. The teacher participants experience conceptual barriers concerning the nature of EE and ESD and that of notion of integrated geography promoted by the curriculum document. As a result, some of the teacher participants have difficulties in identifying EE and ESD themes in the curriculum document and incorporating them in the lessons. Furthermore, the teacher participants have difficulties in distinguishing learner activities from learnercentred approaches underpinned by constructivist learning theories as observed by Janse van Rensburg & Lotz-Sisitka (2000) and in using the enquiry learning approach. Some teacher participants prefer using traditional teacher-centred approaches which enable them to finish syllabuses in time for examinations. The use of learner-centred approaches such as fieldwork is hindered by barriers such as shortage of resources, class time, large classes, deteriorating discipline, heavy workload and policy contradiction. This study revealed a gap between policy rhetoric and practice in the teacher participants’ efforts to implement EE and ESD through the geography NCS.<br>AFRIKAANSE OPSOMMING: Beter omgewingsopvoeding-onderrig en -leer van volhoubare ontwikkeling (OO/OVO) in skole is een van die hoofresponse op die toenemende agteruitgang in die toestand van die wêreldomgewing in die Dekade van Opvoeding vir Volhoubare Ontwikkeling (DOVO) (2004-2015). OO/OVO is geïntegreer in die Suid-Afrikaanse skoolkurrikulum; in die Algemene Onderwys en Opleidingfase (Grade R tot 9) (AOO) en die Verdere Onderwys en Opleidingsfase (VOO) deur die beginsels wat die leerplan onderlê soos sosiale geregtigheid, ‘n gesonde omgewing, menseregte en inklusiwiteit. Alhoewel ‘n kruiskurrikulêre benadering tot onderrig en leer in die AOO-fase gevolg word, word OO/OVO by elke vak op die VOO-vlak geïntegreer. Omdat geografie oor mens-omgewingverhoudings handel en interdissiplinêr is, word die vak as een van die hoofvoertuie vir die onderwys van OO/OVO beskou. Om op die behoefte vir beter onderrig en leer van OO/OVO tydens die DOVO te reageer, is die hoofdoel van hierdie navorsingsprojek om vas te stel hoe OO/OVO deur die geografiekurrikulum in Suid-Afrikaanse sekondêre skole op VOO-vlak geïmplimenteer word. Die ondersoek het antwoorde gesoek op vrae wat verband hou met: geleenthede vir die onderrig van OO/OVO in die geografie Nasionale Kurrikulumverklaring (NKV); die perspektiewe van geografie-onderwysers oor OO/OVO; die mate waartoe onderwysers die onderrig van OO/OVO in geografie-lesse inkorporeer; die pedagogiese benaderings wat geografie-onderwysers gebruik; en die hindernisse ten opsigte van die onderrig van OO/OVO in die geografie-kurrikulum. ‘n Kwalitatiewe gevallestudie-navorsingsontwerp, ondersteun deur die interpretatiewe navorsingsparadigma, is ingespan. ‘n Steekproef van 10 senior geografie-onderwysers, bestaande uit agt mans en twee vroue is by die studie betrek. Hulle is uit vyf Wes-Kaapse sekondêre skole geselekteer deur middel van doelgerigte steekproefneming op so ‘n wyse dat die monster van skole so ver moontlik die sosiaal-ekonomiese en sosiaal-kulturele kontekste van die Wes-Kaap weerspieël. Inligting is verkry uit biografiese vraelyste en semi-gestruktureerde onderhoude, asook deur waarneming van lesse en deur die ontleding van dokumente soos die NKV vir geografie, werkskedules en lesplanne. Die van verskillende navorsingsinstrumente is gebruik ter ondersteunin van die triangulasie van data ten einde geldigheids- en betroubaarheidskwessies aan te spreek. Die kwalitatiewe data is daarna aan tematiese ontleding onderwerp. Die studie bevind dat volhoubare ontwikkeling ‘n sentrale tema in die kurrikulum is. Daarbenewens word strategieë om OO/OVO te implementeer, soos die ondersoekleerbenadering, die kwessiegebaseerde benadering en die behoefte om kritiese denkvaardighede te ontwikkel, in die kurrikulum voorgestel. Die onderwyserdeelnemers ervaar konseptuele hindernisse met betrekking tot die aard van OO/OVO en die nosie van geïntegreerde geografie wat die kurrikulumdokument bevorder. Gevolglik vind sommige onderwyserdeelnemers dit moeilik om OO/OVO in die leerplandokument te identifiseer en in hul lesse te inkorporeer. Verder ondervind die onderwyserdeelnemers probleme om leerderaktiwiteite te onderskei van die leerdergesentreerde benaderings wat onderlê word deur konstruktiwistiese leerteorieë soos deur Janse van Rensburg & Lotz-Sisitka (2000) waargeneem en om die ondersoekleerbenadering te gebruik. Sommige onderwyserdeelnemers verkies om tradisionele onderwysergesentreerde benaderings wat hulle in staat stel om kurrikula betyds vir eksamens af te handel. Die gebruik van leerdergesentreerde benaderings soos veldwerk word gestrem deur belemmeringe soos hulpbrontekorte, beperkte klastyd, groot klassse, verswakkende dissipline, hoë werklading en teenstrydighede in die beleid. Die studie het ‘n gaping tussen beleidsretoriek en die praktyk in die onderwyserdeelnemers se pogings om OO/OVO te implementeer wat in die geografie NKV ingewerk is, uitgewys.

Thesis (MSc)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: Lion populations globally are on the decrease and their habitats are fragmenting. Despite their importance in the Zambezi Region in Namibia, very little research has yet been undertaken to understand their occurrence in this area. One of the primary motivations behind this study was the Kavango Zambezi Trans Frontier Conservation Area’s (KAZA TFCA) need to identify trans-boundary movement of carnivores. The collaborative approach with the Ministry of Environment and Tourism in Namibia facilitated the collaring of lions in three National Parks. A number of species were collared and this study focuses on the occurrence of lions in the Zambezi Region. From the lion home range analysis we could see that the home-range sizes of the collared lions varied greatly across the study area. The difference in home range size is largely due to human pressure surrounding the protected areas. Geographically weighted regression assisted in understanding which were the main drivers of lion occurrence, but further investigation was needed using the Maximum Entropy (MaxEnt) model for presence-only data. The factors that were investigated as possibly affecting the occurrence of lions included the following: rivers, land cover, land use, elevation and human activity. After pursuing various research models and manipulating data among all these factors, no single factor or combination of factors was found to be reliable predictors on lion occurrence in the study area. As is discussed in recommendations for further research in Chapter 6, it became clear that quantitative data cannot be used in isolation to predict where lions may occur.<br>AFRIKKANSE OPSOMMING: Leeu-bevolkings is wêreldwyd aan die afneem en hulle habitatte fragmenteer al hoe meer. Ten spyte van hulle intrinsieke belang vir die Zambezi streek in Namibië is daar ‘n gebrek aan navorsing om die voorkome van leeus in hierdie streek te verstaan. ‘n Belangrike motivering vir hierdie studie was die vereiste van die “Kavango Zambezi Trans Frontier Conservation Area” (KAZA TFCA) om grensoorstekende bewegings te verstaan, in onder andere karnivore. In samewerking met KAZA TFCA is GPS-halsbande aangebring aan leeus in drie wildsparke, asook aan individue van ander spesies; hierdie studie fokus spesifiek op leeus in die Zambezi streek. Analise van die leeus se loopgebied toon breë variasies oor die studiegebied, vir die individue met halsbande, hoofsaaklik te wyte aan menslike druk vanuit omliggende nedersettings. Hierdie studie gebruik geografies geweegde regressie om die belangrikste faktore in die teenwoordigheid van leeus te verstaan, terwyl Maximale Entropie modelle (MaxEnt) vir slegs teenwoordigheid data in verdere ondersoeke ingespan is. Die volgende faktore is ondersoek ten opsigte van hulle moontlike bydrae tot die voorkome van leeus: riviere, land bedek, grondgebruik, hoogte en menslike aktiwiteite. Verskeie statistiese navorsingsmodelle is ondersoek, met inagneming van data vir al die faktore, maar geen betroubare aanwyser of aanwysers vir leeu-teenwoordigheid is gevind nie. Dit is duidelik dat bloot kwantitatiewe data ontoereikend is om leeuteenwoordigheid te voorspel, soos uiteengesit in hoofstuk 6.

Thesis (MSc)--University of Stellenbosch, 2004<br>ENGLISH ABSTRACT: The Sandveld, a potato growing area of the Western Cape is subject to significant groundwater abstraction for both municipal and agriculture purposes. The climate is arid and sensitive and important ecosystems in the area are showing varying degrees of impact. Management measures are needed to ensure ongoing sustainable development of the area. In this study, different interpolation techniques were evaluated to calculate values for unsampled variables rainfall and groundwater elevation. Local deterministic techniques as well as geostatistical techniques were used. It was found that geostatistical techniques, especially with collateral information, such as topography, provided a more accurate result. For environmental studies of this nature, Kriging is recommended as interpolation technique. The underlying data will determine the selection of the particular type of Kriging. Data was extracted from a customized relational database, geoMon, used for data capture, retrieval, processing and reporting. Ease of data extraction facilitated analysis. The interpolated grids were applied in two scenarios: Recharge calculations and quantification as well as a new classification approach according to Resource Directed Measures (RDM). Management classes were defined based on GIS-derived data.<br>AFRIKAANSE OPSOMMING: Die Sandveld, ‘n aartappelverbouingsgebied in die Wes-Kaap, ondergaan aansienlike grondwateronttrekking vir beide munisipale sowel as landbou doeleindes. Die klimaat is dor en droog en sensitiewe en belangrike ekosisteme in die area ondervind wisselende impakvlakke. Bestuursmaatreëls word benodig om volhoubare ontwikkeling van die area te verseker. In hierdie studie is verskillende interpolasie tegnieke om onbekende waardes vir veranderlikes gebruik in grondwater evaluasie te bereken, evalueer. Lokale deterministiese tegnieke sowel as geostatistiese tegnieke is gebruik. Geostatistiese tegnieke, veral gebruik saam met addisionele inligting soos topografie, bereken meer akkurate resultate. Vir omgewingsstudies van hierdie aard, word Kriging aanbeveel as interpolasie tegniek. Eienskappe van die onderliggende data word gebruik om die tipe Kriging aan te dui. Data is onttrek uit ‘n gebruikersaangepaste databasis, geoMon, wat gebruik is vir datavaslegging, onttrekking, prosessering en verslaggewing. Die gemak waarmee data onttrek kon word het analise vergemaklik. Geïnterpoleerde data is gebruik vir grondwateraanvullingsberekeninge en -kwantifisering sowel as ‘n nuwe benadering tot klassifikasie volgens hulpbron gerigte maatreëls. Bestuursklasse gebaseer op GIS-afgeleide data, is gedefinieer.

Thesis (MPhil (Geography and Environmental Studies))--University of Stellenbosch, 2004.<br>The paper examines the evolution of ecolabelling/certification in tourism in the context of the evolution of the concepts of sustainable development and tourism, certification’s definitions, motivations, international practices and challenges, and focuses on its intended function as a voluntary market mechanism. Parallels are drawn with the African experience and consideration is given to the particular problems of certification in Africa as a member of the Third World. Evidence is examined, including a local tourist survey that points to certification’s ineffectiveness as a means to influence consumer choice, at least in its current form as a voluntary, selfregulatory tool. An attempt is also made to disprove its effectiveness as a source of competitive advantage for tourism companies by considering it within the framework of competitive strategy theory. It is concluded that certification is a poor market mechanism. Consequently, elements of a model for the effective use of ecolabelling as a tool in a suite of sustainability tools in tourism in Africa, are proposed.

Thesis (MA)--Stellenbosch University, 2002.<br>ENGLISH ABSTRACT: The unique and often fragile environment of the coastal zone is placed under increasing pressure by human development. It is expected that three quarters of the world's population will be living within 60km of the coast by the year 2020. Thorough planning and management are required to prevent coastal degradation. In South Africa, coastal management efforts are being promoted through the implementation of a White Paper for sustainable coastal development. A Coastal Decision Support System (CDSS) was developed to empower local authorities to demarcate and manage sensitive coastal areas by giving them access to relevant botanical and physical information. Land cover/use information for the CDSS was previously mapped manually from hardcopy aerial photography. This method was found to be time-consuming and costly. This study investigated the potential for digital satellite imagery as primary source of data for populating the land cover/use information of the CDSS. A methodology was designed utilising semi-supervised isodata clustering for extracting relevant information for a study area covering 40x20km of coast along the southern coastal sector of South Africa. Digital mapping of SPOT 4 multispectral satellite data was used successfully to map land cover/use information such as wetlands, coastal lakes, dune vegetation, urban areas, forest plantations, natural forest and agricultural areas. A cost comparison was also made between the digital mapping method from satellite imagery used in this research project and the manual mapping from aerial photography. Digital mapping from satellite imagery was found to be more cost-effective in terms of both data and human resource costs. The method outlined and discussed in the research project should provide sufficient guidance for future application of the techniques in populating the CDSS with land cover/use information.<br>AFRIKAANSE OPSOMMING: Die unieke en dikwels sensitiewe landskap in die kussone is onder aansienlike druk weens ontwikkeling deur mense. Daar word verwag dat 'n derde van die wêreldbevolking teen die jaar 2020 binne 60km van die kus woonagtig sal wees. Dit sal deeglike beplanning en bestuur verg om die agteruigang van hierdie gebied te bekamp. Kussonebestuur word in Suid Afrika aangemoedig deur die implementering van 'n Witskrif vir volhoubare kussone-ontwikkeling. 'n Kusgebied-besluitnemingsondersteuningstelsel (KBOS) is ontwikkel in 'n poging om plaaslike owerhede te bemagtig om sensitiewe kusgebiede af te baken en te bestuur. Die KBOS verleen plaaslike owerhede toegang tot toepaslike inligting oor botaniese en fisiese o~standighede. Grondbedekkinginligting vir die KBOS is in die verlede vanaf hardekopie lugfoto's gekarteer. Hierdie metode is tydrowend en duur. Die potensiaal van digitale satellietbeelde as hoof databron om grondbedekkinginligting vir die KBOS te voorsien is in hierdie studie ondersoek. 'n Metode word in die tesis uiteengesit om 'semi-supervised isodata clustering' te gebruik om die nodige inligting uit die data te onttrek. Die studiegebied sluit 'n area van 40x20km langs die suid kus van Suid Afrika in. Digitale kartering vanaf SPOT 4 multispektrale satellietdata is suksesvol gebruik om grondbedekkingsinligting soos vleilande, kusmere, duin-plantegroei, stedelike gebiede, bosbou, natuurlike bos en landbougebiede te karteer. 'n Kostevergelyking is gedoen tussen die digitale karteringsmetode vanaf satellietbeelde in vergeleke met handkartering vanaf lugfotografie. Die digitale karteringsmetode blyk meer koste-effektief te wees beide in terme van die datakoste sowel as die koste verbonde aan mannekrag. Die omskrywing van die metode in die tesis behoort as goeie riglyn te dien vir die toepassing van die tegniek om grondbedekkinginligting voor te berei vir die KBOS.

Thesis (PhD)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: In many developing countries, rapid urbanisation continues to substantially transform land from agricultural and rural land uses, as well as natural landscapes into urban areas. This leads to significant changes to the socio-economic fabric and nature of the natural environment. Data to monitor such transformation is often out of date, unreliable, in unstandardised format, cumbersome and expensive to collect or simply unavailable in urban centres of many developing countries. These characteristics inhibit local authorities‘ and other stakeholders‘ capacity to monitor and leverage resources toward sustainable urban development. Sustainable urban land use planning is a major objective of urban planning, but it is difficult to put into practice. This study investigates the efficacy of earth observation (EO) for collecting information required for sustainable urban land use planning and proposes the use of decision consequence analysis (DCA) as a simple and structured way to put sustainable urban development into practice. The study focuses on three central determinants of sustainable urban land use, namely (1) land use change and land use mix, (2) urban sprawl and (3) the urban built-up area. Consequently, urban sustainability indicators of these three components were identified. EO data for Stellenbosch, a town in the Western Cape province of South Africa, was gathered and used to perform spatio-temporal analyses of the indicators in a geographic information system (GIS). This enabled the establishing of the positive or negative trajectory made toward achieving sustainable urban land use planning. The study demonstrates how the use of EO data, DCA, urban sustainability indicators and GIS can enhance local authorities‘ capacities for monitoring urban sustainability. EO data and urban sustainability indicators were used to develop an urban sustainability toolbox which facilitates evidence-based decision making. The results also show that urban sustainability indicators derived from EO are valuable in providing synoptic, up-to-date, standardised and normalised information on urban areas. Such information would be expensive and cumbersome to collect without the use of EO and GIS. As a result, earth observation will continue to play a key role in monitoring urban sustainability, particularly in developing countries.<br>AFRIKAANSE OPSOMMING: Die volgehoue en versnelde verstedeliking wat in baie ontwikkelende lande voorkom is voortdurend besig om landbougrond, plattelandse gebiede en natuurlike landskappe na stedelike areas om te skakel. Dit bring ʼn noemenswaardige verandering in die sosiaal-ekonomiese struktuur en aard van die natuurlike omgewing te wee. Data om hierdie veranderinge te monitor, is dikwels verouderd, onbetroubaar, nie in ʼn standaard formaat nie, omslagtig, te duur om te in te samel of net eenvoudig nie beskikbaar vir baie stedelike sentra van ontwikkelende lande nie. Hierdie faktore beperk plaaslike owerhede en ander belanghebbendes se moniteringskapasiteit en verhinder die beskikbaarstelling van hulpbronne vir volhoubare stedelike ontwikkeling. Beplanning vir volhoubare stedelike grondgebruik is ʼn belanrike doelwit, maar is moeilik om in die praktyk toe te pas. Hierdie studie ondersoek die doeltreffendheid van aardwaarneming (AW) vir die insamel van inligting wat vir volhoubare grondgebruik beplanning nodig is. Die studie stel die gebruik van analise van besluitnemingsgevolge (ABG) as ʼn eenvoudige en gestruktureerde manier voor om volhoubare stedelike ontwikkeling in die praktyk toe te pas. Die ondersoek fokus op drie hoof bepalende faktore van volhoubare stedelike grondgebruik, naamlik (1) verandering en vermenging van grondgebruik, (2) stedelike kruip, en (3) die beboude stedelike gebied. Gevolglik is aanwysers van die stedelike volhoubaarheid van hierdie drie komponente geïdentifiseer. AW-data vir Stellenbosch, 'n dorp in die Wes-Kaap provinsie van Suid-Afrika, is ingesamel om met behulp van ʼn geografiese inligtingstelsel (GIS) die aanwysers tyd-ruimtelik te analiseer. Dit het dit moontlik gemaak om die positiewe of negatiewe trajekte vir die bereiking van volhoubare stedelike grondgebruiksbeplanning vas te stel. Die studie demonstreer hoe AW-data, ABG, aanwysers van stedelike volhoubaarheid en GIS plaaslike owerhede se kapasiteit vir die monitering van volhoubaarheid in stede kan bevorder. AW-data en stedelike volhoubaarheidsaanwysers is gebruik om 'n stedelike volhoubaarheidsgereedskapkis te ontwikkel wat bewysgebaseerde besluitneming fasiliteer. Die resultate wys ook dat volhoubare stedelike aanwysers afgelei uit AW, nuttig is om sinoptiese, gestandardiseerde en genormaliseerde inligting oor stedelike gebiede te voorsien. Hierdie tipe inligting is duur en omslagtig om in te samel sonder die gebruik van AW en GIS. Gevolglik sal AW voortaan steeds 'n sleutelrol speel in die monitering van stedelike volhoubaarheid, veral in ontwikellende lande.

Thesis (MSc)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: A land cover classification showing the landscape structure of a given area is necessary to make appropriate measures for environmental planning. The environmental impacts from insensitive human activities have led to a severe loss of biodiversity in the Cape Floristic Region over time. The natural biodiversity of the North-West Sandveld in particular, has suffered severe loss and a high level of fragmentation. The rapid growth of certain agricultural practices in the Sandveld has led not only to loss of biodiversity, but the secondary effects of excessive water extraction, invasive alien fauna and flora species and harmful run-off from toxic herbicides and pesticides. To plan effectively, an accurate map of a suitable resolution needs to be created to effectively display spatial information. The primary aim was to demonstrate that a semi-automated fine-scale, land cover classification using object-oriented image analysis is possible for a large local area to examine the environmental issues pertaining to the Sandveld. Towards this aim, a model to classify land cover of the study area was developed and its effectiveness analysed and interpreted. To meet these requirements, pre-processed SPOT 5 satellite imagery was used to digitize certain classes and to generate frame, border and Normalized Differentiation Vegetation Index (NDVI) layers for the object-oriented classification in eCognition. The accuracy of the results was determined using the Kappa coefficient which gave an accuracy level of 70%. The environmental impacts were determined after area calculations were done on each class. The results showed that the natural areas still made up the greatest percentage of the Sandveld but that it is highly fragmented, especially along the coast and many areas, although left in a natural state, were being overgrazed by livestock. The temporary irrigated, temporary non-irrigated strip agriculture and permanent agriculture classes made up the most of the remainder of the areas and had the largest impact on the Sandveld‟s biodiversity. For the biodiversity of the Sandveld to remain intact, a balance between enforcing the law and encouraging inhabitants of the Sandveld to encourage more environmentally balanced practices needs to be created. Stewardship programmes and education will greatly enhance the effectiveness of any conservation efforts.<br>AFRIKAANSE OPSOMMING:'n Landbedekkingsklassifikasie wat die landskapstruktuur van 'n gegewe gebied aandui, is noodsaaklik om gepaste omgewingsbeplanning toe te pas. Die effek van intensiewe menslike aktiwiteite op die omgewing oor 'n lang tydperk, het gelei tot die verlies van biodiversiteit in die Kaapse Blommestreek. Die natuurlike biodiversiteit van veral die Noordwes Sandveld is deur ernstige verliese, asook 'n vlak van fragmentasie beïnvloed. Behalwe dat die vinnige toename van sekere landboupraktyke in die Sandveld gelei het tot die verlies van biodiversiteit. Sekondêre faktore soos die oormatige water-ontrekking, indringerspesies van fauna en flora en die afloop van skadelike onkruiddoder en pes-weerende middels in rivierstelsels is ook verantwoordelik vir verlies van biodiversiteit. Om effektiewe beplanning moontlik te maak, is die skepping van 'n akkurate kaart met 'n geskikte resolusie wat die ruimtelike inligting effektief voorstel, nodig. Die hoof doel van hierdie studie was om 'n semi-geoutomatiseerde fynskaal landbedekkingsklassifikasie in 'n groot plaaslike gebied wat die omgewingskwessies rakende die Sandveld te bestudeer en demonstreer, deur gebruik te maak van objek-gerigte beeldanalise. Die effektiwiteit van 'n model wat ontwikkel is om die studiegebied te klassifiseer, was ontleed en geïnterpreteer. Om hierdie vereistes te bevredig, is voorverwerkte SPOT 5 satellietbeelde gebruik om sekere klasse te versyfer, asook om raam-, grens- en genormaliseerde plantegroei differensiasie indekslae vir beeldgerigte klassifikasie in eCognition te skep. Die akkuraatheid van die resultate was bepaal deur die Kappa-koëffisiënt wat 'n akkuraatheidsvlak van 70% gelewer het. Die omgewingsimpakte was bepaal deur opperlakteberekeninge vir elke klas te maak. Die resultate dui aan dat natuurlike gebiede steeds die grootste persentasie van die Sandveld beslaan, maar dat dit hoogs gefragmenteerd is, veral langs die kuslyn en dat baie gebiede, wat wel steeds in 'n natuurlike toestand is, oorbewei word deur vee. Die tydelike spilpuntbesproeide landbougebiede, tydelike nie-besproeide strooklandbou en permanente landbouklasse, beslaan die meeste van die oorblywende landbedekking van die Sandveld. Hierdie klasse het ook die grootste impak op die studiegebied se biodiversiteit. Om die biodiversiteit van die Sandveld te behou, moet 'n balans tussen die afdwing van wetgewing en die aanmoedig van meer omgewingsgebalanseerde praktyke in die Sandveld gevind word. Rentmeesterskap programme en opvoeding sal die effektiwiteit van enige bewaringspogings aansienlik verbeter.

Thesis (MA (Geography and Environmental Studies))--University of Stellenbosch, 2009.<br>Agricultural production has become vital to the Sandveld, of which Verlorenvlei is a part, in terms of both economic growth and food security. It is well documented as an area under threat of severe natural resource depletion if it is not well managed with sustainability in mind. Agricultural production, other human-driven development and the survival of the local ecosystems compete for the limited water resources. This study uses the SWAT hydrological model to simulate the transport of water through the catchment area. ArcSWAT, a third-party software extension to ArcGIS, is used as an interface between ArcGIS and the SWAT model. Spatial data (DEM, soil and landuse) is used in the preprocessing phase and fed into the SWAT model through the interface. Daily climate data were sourced and prepared according to the SWAT model’s input requirements. Considerable effort was required to fill temporal and spatial gaps in available climate data, and to infer certain unmeasured climate variables from other measurements (e.g. infer solar radiation from daylight hours, time of the year and latitude). The SWAT hydrological model was then run. The model results compared favourably to measured flow data. The study recommends building on from this first step using the SWAT hydrological model to simulate future land use scenarios for the catchment area.

Thesis (MSc)--Stellenbosch University, 2001.<br>ENGLISH ABSTRACT: Automated teller machines (ATMs) are a very important part of our daily lives. They are the key to accessing our bank accounts. Where they are located can determine how easy or difficult it is to access our bank accounts. ATMs are primarily designed to serve customers and should therefore be accessible and convenient to the customers. Hence, the question of where the ATMs should be located is a prime issue to both the customer and the bank. A geographical information system (GIS) is a tool that can be used to assist in answering questions about locations. It provides a means of determining optimal locations for any spatially referenced object. Against this backdrop, this study was undertaken to develop a method with which GIS can be used to find optimal locations for ATMs, taking Stellenbosch as a case study. Firstly, it was necessary to understand current factors affecting ATM locations, both locally and internationally. An extensive literature survey was conducted to gain an understanding of problems relating to locating ATMs. Interviews with bank officials were conducted to help understand more fully the problems and the current procedures used in locating ATMs. Obtaining the public's perception of ATMs was also paramount to this study. A household questionnaire survey was conducted in Stellenbosch to ascertain how customers feel about the current location of ATMs in Stellenbosch. Secondly, GIS was considered and evaluated as a tool to find optimal locations for ATMs. This involved discussing the capabilities of GIS and the various options that banks may have available. Thirdly, the ability of using GIS to find optimal sites was tested by applying GIS to Stellenbosch. Having done this, GIS was then used to find additional ATM sites. The results provide a basis for banks to locate ATMs in general. Keywords: GIS, ATMs, location, optimal locations, location-allocation, models, MINDISTANCE, MAKCOVER, MAXATTEND, MINDISTPOWER.<br>AFRIKAANSE OPSOMMING: Outomatiese tellermasjiene (OTMs) speel 'n baie belangrike rol in ons lewens vandag aangesien ons die meeste van ons banktransaksies deur middel van 'n OTM doen en ons bankrekeninge sodoende kontroleer. Die OTMs se primere doel is om 'n diens aan bank kliente te lewer, dus is dit uiters belangrik om liggings te identifiseer wat gerieflik en toeganklik is vir die kliënte en die bank. 'n Geografiese inligtingstelsel (GIS) kan gebruik word om vrae in verband met bestaande en beplande liggings vir OTMs te beantwoord. Die stelsel kan optimale liggings identifiseer vir spesefieke doeleindes, byvoorbeeld OTMs, ens. Teen hierdie agtergrond is hierdie studie onderneem om 'n metode te ontwikkel waarmee GIS aangewend kan word om optimale liggings vir OTMs te vind, met Stelle bosch as 'n gevallestudie. Ten eerste was dit nodig om die huidige faktore met betrekking tot die liggingskeuse vir OTMs, beide in die buiteind en die binneland, te ondersoek. "n Uitgebreide literatuursoektog is geloods om die probleme wat gepaard gaan met die bepaling van die keuse van "n OTM ligging, te bestudeer. Onderhoude is gevoer met amptenare van verskillende banke om die probleme rondom die kies van OTM-plasings te verstaan. Kliënte is ook genader vir hulle idees, benogdighede en probleme oor OTM-liggings in Stellenbosch. Tweedens is GIS geëvalueer as 'n moontlike stelselom die beste liggings vir OTM'e te bepaal. Dit het 'n bespreking van die vermoëns en voordele van GIS behels, sowel as 'n oorsig van beskikbare opsies vir die bank. Die vermoë om met die gebruik van GIS addisionele liggings vir OTMs in Stellenbosch te identifiseer, is daarna getoets. Die resultaat bied aan banke "n keuse van alternatiewe liggings vir die plasing van OTMs. Sluitelwoorde: GIS, ATMs, ligging, optimale ligging, ligging-toesegging, modelle, MINDISTANCE, MAXCOVER, MAXA1TEND, MINDISTPOWER

Thesis (DPhil) (Geography and Environmental Studies))--Stellenbosch University, 2008.<br>The subject is the rock art within the region known as the Little Karoo in the Western Cape that lies between the coastal plain and the Greater Karoo, penned in geographically by the Langeberg in the south and the Swartberg in the north. During a ten year site survey of 150 sites with rock art, content and details of the rock art images have been recorded on site forms and where possible traced on polyester film and photographed. The sites tend to be small with, on average, fewer than 50 images, but then 7 sites have more than 100 images per site. The sites are located mostly in ravines in the mountainous areas. Few sites with rock art have occupation deposits. Human figures in the rock art, predominantly male, are most commonly represented. Other images are animals, such as eland, smaller antelope, elephants, felines, canids and therianthropic figures of half-human, half-animal forms. Finger dots, handprints and geometric or non-representational marks are present in the rock art sample as well. The art can be linked to shamanistic experiences in altered states of consciousness. A number of depictions are interpreted as part of rainmaking ritual and the significance of the symbolism of water. There are resemblances in content and style to the rock art in the Hex River Valley, the Cederberg, and south of the Langeberg, on the coastal plain, but some imagery point to a variation more specific to the Little Karoo. These are rare rock art depictions of a combination of human head and upper torso with ichthyoidal lower limbs, at times reminiscent of bird-like human figures. Verbatim accounts recorded of stories and sightings of numinous watermeide (water maidens) at waterholes and rivers of the Little Karoo and correlations drawn with research on similar folklore in the Northern Cape and elsewhere make a traditional link between these regions. The myth of the watermeide takes on a therianthropic nature in form, that of half-human half-fish, reminiscent of the well-known westernized mystical concept of mermaid features; a description popular in the vernacular. The described form of the watermeid espouses a connection to the uniqueness of the rock paintings of therianthropic figures with distinctive fishtail and human shoulders, head and arms. A connection with explanatory accounts of rock paintings and folklore recorded in the Oudtshoorn district more than a hundred years ago, recorded information of stories and myths of mystical water creatures in the Northern Cape, and verbatim accounts of the watermiede, is made to suggest a basis for interpretation of the therianthropic nature of some of the rock art imagery in the Little Karoo. The rock art is produced in a space and a time frame that may be related to that of the current stories of the watermeide.

Thesis (MSc (Geography and Environmental Studies))--University of Stellenbosch, 2011.<br>ENGLISH ABSTRACT: The automation of information extraction from earth observation imagery has become a field of active research. This is mainly due to the high volumes of remotely sensed data that remain unused and the possible benefits that the extracted information can provide to a wide range of interest groups. In this work an earth observation image processing system is presented and profiled that attempts to streamline the information extraction process, without degradation of the quality of the extracted information, for geographic object anomaly detection. The proposed system, implemented as a software application, combines recent research in automating image segment generation and automatically finding statistical classifier parameters and attribute subsets using evolutionary inspired search algorithms. Exploratory research was conducted on the use of an edge metric as a fitness function to an evolutionary search heuristic to automate the generation of image segments for a region merging segmentation algorithm having six control parameters. The edge metric for such an application is compared with an area based metric. The use of attribute subset selection in conjunction with a free parameter tuner for a one class support vector machine (SVM) classifier, operating on high dimensional object based data, was also investigated. For common earth observation anomaly detection problems using typical segment attributes, such a combined free parameter tuning and attribute subset selection system provided superior statistically significant results compared to a free parameter tuning only process. In some extreme cases, due to the stochastic nature of the search algorithm employed, the free parameter only strategy provided slightly better results. The developed system was used in a case study to map a single class of interest on a 22.5 x 22.5km subset of a SPOT 5 image and is compared with a multiclass classification strategy. The developed system generated slightly better classification accuracies than the multiclass classifier and only required samples from the class of interest.<br>AFIKAANSE OPSOMMING: Die outomatisering van die verkryging van inligting vanaf aardwaarnemingsbeelde het in sy eie reg 'n navorsingsveld geword as gevolg van die groot volumes data wat nie benut word nie, asook na aanleiding van die moontlike bydrae wat inligting wat verkry word van hierdie beelde aan verskeie belangegroepe kan bied. In hierdie tesis word 'n aardwaarneming beeldverwerkingsstelsel bekend gestel en geëvalueer. Hierdie stelsel beoog om die verkryging van inligting van aardwaarnemingsbeelde te vergemaklik deur verbruikersinteraksie te minimaliseer, sonder om die kwaliteit van die resultate te beïnvloed. Die stelsel is ontwerp vir geografiese voorwerp anomalie opsporing en is as 'n sagteware program geïmplementeer. Die program kombineer onlangse navorsing in die gebruik van evolusionêre soek-algoritmes om outomaties goeie beeldsegmente te verkry en parameters te vind, sowel as om kenmerke vir 'n statistiese klassifikasie van beeld segmente te selekteer. Verkennende navorsing is gedoen op die benutting van 'n rand metriek as 'n passings funksie in 'n evolusionêre soek heuristiek om outomaties goeie parameters te vind vir 'n streeks kombinering beeld segmentasie algoritme met ses beheer parameters. Hierdie rand metriek word vergelyk met 'n area metriek vir so 'n toepassing. Die nut van atribuut substel seleksie in samewerking met 'n vrye parameter steller vir 'n een klas steun vektor masjien (SVM) klassifiseerder is ondersoek op hoë dimensionele objek georiënteerde data. Vir algemene aardwaarneming anomalie opsporings probleme met 'n tipiese segment kenmerk versameling, het so 'n stelsel beduidend beter resultate as 'n eksklusiewe vrye parameter stel stelsel gelewer in sommige uiterste gevalle. As gevolg van die stogastiese aard van die soek algoritme het die eksklusiewe vrye parameter stel strategie effens beter resultate gelewer. Die stelsel is getoets in 'n gevallestudie waar 'n enkele klas op 'n 22.5 x 22.5km substel van 'n SPOT 5 beeld geïdentifiseer word. Die voorgestelde stelsel, wat slegs monsters van die gekose klas gebruik het, het beter klassifikasie akkuraathede genereer as die multi klas klassifiseerder.

Thesis (MA (Geography and Environmental Studies))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: The research problem addressed in this study is how to ascertain the primary determinants of house prices in Hout Bay. This overarching aim encompasses three interwoven aspects. The research attempts first to determine which factors generally affect property prices in Hout Bay; second, to assess the extent to which individual factors affect house prices; and third, to discover the role variables collectively play in determining house prices in Hout Bay. Four objectives emerge from this subdivision of the aim, namely identify potential house priceinfluencing factors in Hout Bay; quantify the selected locational variables; statistically analyse the variables to distinguish the significant and insignificant ones; and use regression analysis to deduce the collective and individual influences of the significant factors on house prices. Structured interviews were conducted with representatives of 12 estate agencies in Hout Bay to uncover factors affecting the local property market. Through insights gleaned from the literature, manipulation of municipal valuation and cadastral data and the structured interviews, 39 structural and site-related variables, 18 distance variables and 11 socioeconomic variables were constructed. Several preliminary and descriptive analyses performed on the variables gave a general impression of the distribution of data and assisted in identifying statistically significant variables for determining house prices. These analyses included measures of central tendency (mean, median and mode); measures of dispersion (minimum and maximum values, range, standard deviation, skewness and kurtosis); the compilation of histograms for each variable; analysis of variance (ANOVA) on nominal data variables; and the creation of 2D scatterplots for ordinal data variables. Spearman rank order correlation was performed on the nominal and ordinal data variables. Statistically weak variables and those exhibiting signs of multicollinearity were eliminated. A best-subsets regression analysis was executed on the remaining variables. The regression model performed adequately, explaining close to 54% of the variation in house prices in Hout Bay. Among the individual factors, the size of the erf was the strongest predictor of the house price dependent variable, house size was the second most important factor, while distance to busy roads and quality of the house shared similar importance. Regression residuals were also mapped to expose spatial patterns. It is recommended that comparable research be conducted on a citywide scale, that variables be quantified differently and that new GIS techniques be incorporated in future studies.<br>AFRIKAANSE OPSOMMING: Die navorsingsprobleem wat hierdie studie aanspreek, is hoe om vas te stel wat die primêre faktore is wat huispryse in Houtbaai bepaal. Hierdie oorkoepelende doelwit vervat drie onderling verwante aspekte. Eerstens, poog die navorsing om te bepaal watter faktore in die algemeen huispryse in Houtbaai beïnvloed; tweedens, om te assesseer tot watter mate individuele faktore huispryse affekteer; en derdens, om te ontdek watter kollektiewe rol veranderlikes in die bepaling van huispryse in Houtbaai speel. Vanuit hierdie onderverdeling van die navorsingsdoelwit het vier doelstellings ontstaan, naamlik identifiseer die potensiële faktore wat huispryse in Houtbaai beïnvloed; kwantifiseer die geselekteerde liggingsveranderlikes; voer verskeie analises uit op die veranderlikes om die beduidende en onbeduidende veranderlikes te identifiseer; en benut regressie-analise om die kollektiewe en individuele invloed van beduidende faktore op huispryse in die studiegebied vas te stel. Gestruktureerde onderhoude is met verkoopslui van 12 eiendomsagentskappe in Houtbaai gevoer om die faktore te bepaal wat die plaaslike eiendomsmark beïnvloed. Deur middel van insigte verkry uit die akademiese literatuur, manipulasie van munisipale waardasie- en kadastrale data en die gestruktureerde onderhoude is 39 strukturele en liggingsverwante veranderlikes, 18 afstandsveranderlikes en 11 sosio-ekonomiese veranderlikes geskep. Verskeie analises wat op die veranderlikes uitgevoer is, het ‘n algemene indruk van die verspreiding van die data verskaf en het die identifisering van statistiesbeduidende veranderlikes bevorder. Hierdie analises het maatstawwe vir sentrale neiging (rekenkundige gemiddelde, mediaan en modus); maatstawwe vir dispersie (minimum en maksimum, variasiewydte, standaardafwyking, skeefheid en kurtose); die samestelling van histogramme vir elke veranderlike; die analise van variansie (ANOVA) op veranderlikes met nominale data; en die skep van 2D-spreidingstippe vir veranderlikes met ordinale data behels. Spearman se rangorde korrelasie is op beide die nominale en ordinale data uitgevoer. Statistiesonbeduidende veranderlikes, of dié wat tekens van multikollineariteit met ander veranderlikes getoon het, is geëlimineer. ‘n Beste deelversameling regressie-analise is uitgevoer op die oorblywende veranderlikes. Die regressiemodel het gepaste resultate behaal deurdat dit byna 54% van die variasie in Houtbaai se huispryse verklaar het. Van die individuele veranderlikes was die grootte van die erf die sterkste voorspeller van die huisprys afhanklike veranderlike, huisgrootte was die tweede belangrikste faktor, terwyl afstand van besige paaie en die kwaliteit van die huis soortgelyke invloed gedeel het. Die regressiemodel se residu’s is gekarteer om ruimtelike patrone vas te stel. Dit word aanbeveel dat soortgelyke navorsing op ‘n stadswye skaal uitgevoer word, dat die veranderlikes op ander wyses gekwantifiseer word en dat nuwe GIStegnieke in toekomstige studies aangewend word.

Thesis (MSc)--Stellenbosch University, 2011.<br>ENGLISH ABSTRACT: Floods have been identified as one of the major natural hazards occurring in South Africa. A disaster risk assessment forms the first phase in planning for effective disaster risk management through identifying and assessing all hazards that occur within a geographical area, as required by the Disaster Management Act (Act No. 57 of 2002). The National Water Act (Act No. 36 of 1998) requires that flood lines be determined for areas where high risk dams exist and where new town developments occur. However, very few flood hazard maps exist in South Africa for rural areas. The data required for flood modelling analysis is very limited, particularly in rural areas. This study investigated whether flood hazard maps can be created using the existing data sources. A literature review of flood modelling methodologies, data requirements and flood hazard mapping was carried out and an assessment of all available flood-related data sources in South Africa was made. The most appropriate data sources were identified and used to assess an evaluation site. Through combining GIS and hydraulic modelling, results were obtained that indicate the likely extent, frequency and depth of predicted flood events. The results indicate that hydraulic modelling can be performed using the existing data sources but that not enough data is available for calibrating and validating the model. The limitations of the available data are discussed and recommendations for the collection of better data are provided.<br>AFRIKAANSE OPSOMMING: Vloede is van die vernaamste natuurlike gevare wat in Suid-Afrika voorkom. 'n Ramprisiko-analise is die eerste stap in die proses van suksesvolle ramprisiko-beplanning deur middel van die identifisering en analise van alle gevare wat voorkom in 'n geografiese gebied, soos vereis deur die Rampbestuurwet (Wet 57 van 2002). Die Nasionale Waterwet (Wet 36 van 1998) bepaal dat vloedlyne slegs vir gebiede waar hoë-risiko damme voorkom en vir nuwe uitbreidingsplanne in dorpe vasgestel moet word. Egter is die data wat vir vloedmodelleringsanalises benodig word baie skaars in Suid-Afrikaanse landelike gebiede. Hierdie studie het ondersoek of vloedgevaar-kartering met die beskikbare data moontlik is. 'n Literatuurstudie oor vloedmodelleringsmetodologieë, data-vereistes en vloedgevaarkartering is voltooi en alle beskikbare vloed-verwante data in Suid-Afrika is geëvalueer. Geskikte data-bronne is gekies en gebruik om 'n toetsgebied te assesseer. Deur GIS en hidrouliese modellering te kombineer, is die omvang, waarskynlikheid en diepte van die voorspelde vloedgebeurtenisse gemodelleer. Die studie het bevind dat, alhoewel vloedgevaarkartering met die beskikbare data moontlik is, daar nie genoeg data beskikbaar is om die model te kalibreer en te valideer nie. Tekortkominge van die bestaande data word bespreek en aanbevelings oor die verbetering van die bestaande data vir toepassings in vloedgevaarkartering word gemaak.

Thesis (MA)--Stellenbosch University, 2001.<br>ENGLISH ABSTRACT: The study traces some of the causes and effects of land degradation in Mutale since it is an environmentally challenging issue associated with depletion of resources. The degradation conditions identified by the Provincial Department of Agriculture in the Northern Province support the aims of this study. Based on information obtained from the physical survey of the area and through questionnaires and interviews with the local people, it is evident that the environmental conditions of Mutale district have worsened due to the influence of land usage. From the survey made, the physical conditions are shown to be in a state of decline and to impact negatively on the soil and vegetation. The perceptions of the local community regarding physical change revealed that a variety of activities such as gathering fuel wood, fencing, stocking, and cultivating fields, influence each other and exacerbate the encroachment of degradation conditions. Stock worsens the conditions through uncontrolled grazing associated with lack of grazing camps, trampling, and overgrazing. Extension of fields, residential areas, and inescapable massive harvesting of bush for different purposes are seen as further causes of the worsening state of the environment. In the past attempts were made to curb the environmental decline, but such conservation measures were not fruitful enough as they changed from time to time and land users were alienated from land on which they depended. The present study recommends the implementation of LandCare, a programme that the Department of Agriculture has adopted in other parts of the country, as a possible solution to some of the environmental problems, and as a conservation measure.<br>AFRIKAANSE OPSOMMING: Die studie ondersoek sommige van die oorsake en gevolge van omgewingsdegradasie by Mutale, omdat dit 'n omgewings-uitdagende kwessie is wat met die uitputting van hulpbronne in verband staan. Die degradasietoestande wat deur die Provinsiale Landboudepartmente in die Noordelike Provinsie geïdentifiseer is, bied ondersteuning aan die doelstellings van hierdie studie. Vanuit die inligting wat deur middel van 'n empiriese ondersoek in die gebied en deur vraelyste en onderhoude met die plaaslike mense verkry is, is dit duidelik dat omgewingstoestande in die Mutale distrik vanweë die manier van grondgebruik verswak het. Vanuit die ondersoek wat gedoen is, word aangetoon dat fisiese toestande agteruitgaan en 'n negatiewe impak op die grond en plantegroei het. Waarneming deur die plaaslike gemeenskap met betrekking tot fisiese verandering dui aan dat 'n verskeidenheid aktiwiteite, soos die versameling van brandhout, bou van heinings, aanhou van vee en bewerking van landerye mekaar affekteer en die toename van die degradasietoestande veroorsaak. Vee vererger verder die toestande deur onbeheerde weiding wat verband hou met die gebrek aan weidingskampe. Die onafwendbare en grootskaalse afkap van die bos vir 'n verskeidenheid doeleindes word beskou as verdere oorsake van die toestand waarin die omweging verkeer. Pogings is in die verlede aangewend om die agteruitgang van die omgewing te keer, maar die bewaringsmaatreëls het nie genoeg vrug afgewerp nie, daar hulle van tyd tot tyd gewysig IS en die grondeienaars vervreemd geraak het van die grond waarvan hulle afhanklik was. Hierdie ondersoek beveel aan dat "LandCare", 'n program wat deur die Departement van Landbou vir ander dele van die land goedgekeur is, as ' n moontlike oplossing vir sommige van die omgewingsprobleme en as bewaringsmaatreël toegepas word.

Thesis (MSc (Geography and Environmental Studies))--University of Stellenbosch, 2005.<br>Since mechanised borehole drilling began in South Africa in the late 1800s, over 1 100 000 boreholes have been drilled. As the country’s growing population and the perceived impacts of climate change increase pressure on water surface supplies, attention is turning to groundwater to meet the shortfall in water supply. This will mean even more drilling will take place. Until the introduction of the Standard Descriptors for Boreholes, published in 2003, South Africa has not had a set of guidelines for borehole information capture. This document provides a detailed description of the basic information requirements needed to describe and characterise the process of drilling, constructing, developing, managing and monitoring a borehole. However, this document stands alone as a specification with little or no implementation or interpretation to date. Following the development and publishing of the ArcHydro data model for water resource management by the CRWR based at the University of Texas at Austin, there has been a great deal of interest in object-oriented data modelling for natural resource data management. This thesis describes the utilisation of an object oriented data modelling approach using UML CASE tools to design a data model for South African Boreholes, based on the Standard Descriptors for Boreholes. The data model was converted to a geodatabase schema and implemented in ArcGIS.

Thesis (MSc)--Stellenbosch University, 2004.<br>ENGLISH ABSTRACT: Multi-criteria decision-making (MCDM) is a set of techniques designed specifically for the analysis of complex problems. Geographical Information Systems (GIS) focus on spatial problem-solving and spatial analysis. The integration of these methodologies offers a powerful approach to decision making. Despite the fact that most spatial decision problems are multi-criteria problems by nature, the process of MCDM is not well established or effectively integrated into the field of spatial analysis and GIS. This research focuses on bridging the gap between MCDM and GIS. To this end, a generic MCDM extension was designed and implemented in ArcView. As a result, a first version MCDM extension is offered. The extension expands ArcView's functionality with a limited set of MCDM methods. This functionality is illustrated on two problems involved with developing the tourism potential at Coutada 16 Wildlife Reserve in Mozambique. The MCDM extension facilitates procedures that allow the evaluation of spatial problems and includes the ability to deal with both raster and vector data. This system offers a generic problemsolving environment, which can be used to evaluate geographical problems of any nature. This research identifies a number of improvements to the developed functionality and successfully illustrates the potential problem-solving capabilities associated with MCDM integrated with ArcView.<br>AFRIKAANSE OPSOMMING: Multi Kriteria Besluitneming (MKBN) is n versameling metodes vir die analise van komplekse probleme. Geografiese Inligtingstelsels (GIS) fokus op geografiese probleemoplossing en analise. Die integrasie van hierdie twee metodologieë bied 'n kragtige benadering tot besluitneming. Ten spyte daarvan dat die meeste geografiese probleme in wese meerveranderlik van aard is, is MKBN nie effektiefbinne die raamwerk van GIS geïntegreer nie. Hierdie studie fokus op die oorbrugging van die gaping tussen MKBN en GIS. Met hierdie doel voor oë is 'n generiese MKBN-uitbreiding vir ArcView ontwerp en geïmplementeer. Die resultaat is 'n eerste- weergawe MKBN-uitbreiding. Die uitbreiding brei ArcView se funksionaliteit uit om 'n beperkte versameling MKBN-metodes in te sluit. Die nuut ontwikkelde funksies word geïllustreer aan die hand van twee probleme wat die ontwikkeling van die toerismepotensiaal vir die Coutada 16 Wildreservaat in Mosambiek aanspreek. Die uitbreiding maak voorsiening vir 'n MKBN-evaluasie van geografiese probleme en besit die vermoë om beide vektor- en roosterdata te analiseer. Hierdie stelsel verskaf 'n generiese omgewing vir probleemoplossing wat gebruik kan word om byna enige geografiese probleem te analiseer. Die studie identifiseer verbeteringe op en uitbreidings van die ontwikkelde funksies en slaag daarin om die potensiaal van probleemoplossing wat deur die integrasie van MKBN-tegnieke met ArcView moontlik gemaak word, te illustreer.

Thesis (MSc) -- Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: One of the main objectives of the South African Wine of Origin Scheme (SAWOS) is to guarantee the quality of wine products emerging from South Africa’s viticultural production areas by preventing the abuse of names of products originating from outstanding viticultural areas. The study of terroirs contributes to knowledge that assists in delimiting potential viticultural areas in South Africa. Terroirs are areas with homogeneous groups of natural factors that, with the aid of effective management, have the potential to produce a unique product over a recognizable period. Natural terroir units (NTU) reflect the integration of relatively homogenous environmental factors, which include topography, climate, soil and geology. This study investigates the use of geographic information systems (GIS) and remote sensing methods in the identification of NTU in the Robertson wine district. Existing topographical, soil, geological and climatic GIS data layers were collected at various scales. In addition to this spatial data, orthorectified and radiometrically corrected SPOT 5 and ASTER satellite imagery were used to classify the land use/cover using an object-based image analysis (OBIA) approach. Eight land use/cover classes were distinguished by a sequential ruleset and an overall accuracy of 81.2% was achieved. The land use/cover layer was combined with the slope aspect and soil landscape to provide a three-component NTU description. One hundred and seventy NTU were identified, of which fifty five units exist for agriculture. These NTU can be used for site selection of agricultural produce and effective planning and management of land use. Climate was not included in the delimitation of NTU because the coarse resolution of climatic data could not be used to distinguish between different NTU. Therefore, all NTU identified in this research has similar climatic conditions. The major drawback of GIS-assisted terroir studies is the difficulty of representing a number of NTU on one GIS map. Therefore, it is recommended to associate the NTU map with a table of the classes instead. Furthermore, the accuracy, scale and resolution of available GIS data in South Africa influence the delimitation of NTU. Although remote sensing was found to provide efficient methods for land cover mapping, the use of multiseasonal satellite images would classify vineyards more efficiently because such an approach accounts for the different growth cycles of grapevines.<br>AFRIKAANSE OPSOMMING: Een van die hoof doelwitte van die Suid-Afrikaanse Wyn van Oorsprongskema (SAWOS) is om die kwaliteit van wynbouprodukte afkomstig van Suid-Afrikaanse wingerdbougebiede te verseker. Die studie van terroirs is geïdentifiseer as ‘n metode om moontlike wingerdbougebiede in Suid-Afrika af te baken. Terroirs is gebiede met relatief homogene natuurlike faktore wat oor ‘n erkenbare tydperk en met behulp van effektiewe bestuur die vermoë het om ‘n unieke produk te lewer. Dié natuurlike faktore word, “natuurlike terroir eenhede” (NTE) genoem en sluit topografie, klimaat, grond en geologie in. Hierdie navorsing ondersoek die gebruik van geografiese inligtingstelsels (GIS) en afstandswaarnemingstegnieke om NTE in die Robertson-wyndistrik te identifiseer. Bestaande ruimtelike topografiese-, grond-, geologiese- en klimaatdata is op ‘n verskeidenheid skale versamel. Bykomend tot hierdie ruimtelike data, is ortogekorrigeerde en radiometries-gekalibreerde SPOT 5 en ASTER satellietbeelde gebruik om landgebruik/ -bedekking te klassifiseer. Objekgerigte beeldanalise (OGBA) is toegepas tydens hierdie klassifikasie en agt landgebruik/ -bedekkingsklasse is onderskei deur gebruik te maak van ‘n stapsgewyse reëlstel. OGBA het ‘n algehele akkuraatheid van 81.2% gelewer. Die landgebruik/ -bedekkingsdata is gekombineer met hellingaspek en die grondlandskap om ‘n drieledige NTE-beskrywing te lewer. Een honderd en sewentig NTE is geïdentifiseer waarvan daar vyf-en-vyftig eenhede vir landbou bestaan. Hierdie NTE kan aangewend word vir die selektering van geskikte terreine vir landbou-gewasse en effektiewe grondgebruikbeplanning en -bestuur. As gevolg van die bestaande klimaatdata se growwe resolusie, was dit ongeskik om te onderskei tussen verskillende NTE. Dus heers daar soortgelyke klimaatstoestande vir elke NTE wat in hierdie navorsing geïdentifiseer is. Die grootste stremmende faktor wat GIS-verwante terroir navorsing beïnvloed, is die uitdaging om ‘n groot getal NTE op een kaart voor te stel. Daarom is dit beter om die NTE kaart met ‘n tabel te assosieer. Verder beïnvloed die akkuraatheid, skaal en resolusie van beskikbare digitale geografiese data in Suid-Afrika die afbakening van NTE. Alhoewel bevind is dat afstandwaarneming ‘n effektiewe metode is om landbedekking te karteer, sal die gebruik van meerseisoenale satellietbeelde wingerde meer doelmatig karteer omdat dit verskeie siklusse in die groei van wingerde in ag neem. SLEUTELWOORDE EN FRASES terroir, natuurlike terroir eenhede (NTE), geografiese inligtingstelsels, afstandwaarneming, wingerdkunde

Thesis (MSc)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: The aim of this study was to determine the scale of marine poaching in the Table Mountain National Park by analysing the amounts of South African abalone, West Coast rock lobster, and shellfish, finfish and bait species confiscated from fishers operating in the park’s marine protected area between 2000 and 2009. The research objectives were fourfold, namely to strengthen conceptual frameworks on illegal harvesting in protected areas; identify the quantities of the various species seized by park officials over the decadal period; cartographically plot the areas in which confiscations took place; and distinguish the different resource users and stakeholders operating in the park and examine the roles they play in resource exploitation. Data was collected from offence logbooks maintained by SANParks rangers and managers, and from records kept by Marine and Coastal Management and the South African Police Services. GIS outputs indicated seizure events over the spatial area of the park. Further data relating to the levels of poaching was sourced from illegal fishers operating in the park who discussed their operations candidly. The research findings indicate that poaching of both abalone and rock lobsters has increased significantly over time. Other marine species show lesser amounts of resources poached over the ten-year period. Spatial outcomes suggest that confiscations of abalone occur predominantly on the east coast of the park, while higher seizure events occur on the west coast for lobsters. Shellfish, finfish and bait species were confiscated in equal amounts from illegal fishers on both the east and west coasts. Future research recommended includes garnering further confiscations data from the police services and undertaking contemporary baseline assessments to discover the effects poaching has had on the resource base since the previous stock assessment in 2001. The challenge laid out for the custodians of the Table Mountain National Park marine protected area is to provide and protect cultural and environmental resources, without compromising biodiversity management, community associations and conservation strategies.<br>AFRIKAANSE OPSOMMING: Die doel van hierdie studie was om die skaal van marienebronstroping in die Tafelberg Nasionale Park te bepaal deur middel van die ontleding van die hoeveelhede Suid-Afrikaanse perlemoen, Weskus-kreef en skulpvis, vinvis en aasspesies wat vanaf oortreders (2000 tot 2009), gekonfiskeer is. Die doel van die navorsing was viervoudig naamlik, die versterking van die navorser se konseptuele-basis rondom die stroping van hulpbronne in beskermde gebiede; die bepaling van die hoeveelhede en tipe spesies wat deur parkbeamptes in beslag geneem is; die plekke waar konfiskasies plaasgevind het; en om die verskillende hulpbron gebruikers en belanghebbendes te onderskei en hulle rolle in die mariene-hulpbron benutting te ondersoek. Primêre konfiskasie-data is verkry vanaf SANparke se logboeke wat deur beamptes instandgehou is en sekondêre data is verskaf deur Mariene en Kusbestuur en die Suid-Afrikaanse Polisiediens. Beslagleggingsgebeure is dmv GIS tegnologie op kaarte vasgelê. Verdere inligting oor die vlakke van stroping is bekom deur openhartige gesprekvoering met vissers wat onwettig in die park bedrywig is. Die navorsing het bevind dat die stropery van perlemoen en kreef met die verloop van tyd aansienlik toegeneem het. Ander mariene spesies het kleiner hoeveelhede stropery van die hulpbron oor die studietydperk aangetoon. Ruimtelike voorstellings toon dat perlemoen-stropery hoofsaaklik aan die ooskus van die park voorkom, terwyl groter beslagleggings/konfiskerings van kreef aan die weskus van die park plaasgevind het. Skulpvis, vinvis en aasspesies is gekonfiskeer by vissers wat onwettig bedrywig is in ewe groot hoeveelhede op beide die ooskus en die weskus. Toekomstige navorsing moet meer inligting oor beslagleggings van die polisie bekom en die kontemporêre basislynassesserings moet meer gereeld onderneem word om veral die effek van stropery op die hulpbron bloot te lê. Die laaste basislyn-assessering het in 2001 plaasgevind. Die uitdaging voor die bewaarders van die park se marienebeskermde gebiede is om kulturele en omgewingshulpbronne toeganklik vir alle gebruikers te maak maar dit ter selfder tyd ook te beskerm, sonder om biodiversiteit, gemeenskapassosiasies en bewaring strategieë te kompromitteer.

Thesis (DPhil (Geography and Environmental Studies))--University of Stellenbosch, 2009.<br>ENGLISH ABSTRACT: The rapid growth of tourism, particularly heritage tourism, in South Africa is leading to a detrimental impact on heritage resources. Part of the problem lies in the lack of knowledge visitors have of the significance and vulnerability of the resources they are engaging with. Another part of the problem is the inherent conflict between the heritage tourism sector and the heritage management sector. Whilst sharing the same resource base, each sector has very different aims. Tourism seeks to exploit heritage resources, whilst heritage management seeks to conserve them. These problems are not necessarily restricted to South Africa and the study of its nature and extent is here limited to the Little Karoo. The Little Karoo is defined in this dissertation as the area in the Western Cape bounded by the Langeberg and Outeniqua Mountains in the south, and the Swartberg in the north. It includes the towns of Montagu, Barrydale, Ladismith, Amalienstein, Zoar, Calitzdorp, Van Wyksdorp, Oudtshoorn, Dysselsdorp, De Rust and Herold. Of importance to this research is the fact that the Little Karoo can be accessed by a variety of passes, poorts and kloofs. This study has been undertaken in order to explore a non-empirical solution to the problem of the human impact on heritage resources through their thematic interpretation and presentation. This research also aims to improve the relationship between the tourism and heritage industries by introducing a shared terminology in the form of a model or framework. This framework is a way of organising and presenting the heritage story in such a way that both heritage tourism and heritage managers (and other stakeholders) can understand. The aim of the study is to devise a mechanism with which to identify, organise, interpret and present heritage resources in a thematic manner. The resulting thematic framework will hopefully enrich the heritage experience of visitors to heritage sites while providing guidance as to the vulnerability of heritage resources. A secondary objective is to develop common terminology for the heritage tourism and heritage management communities. The intent is to improve the relationship between these two sectors and thereby mitigate further damage to heritage resources. Data for this study was collected from several empirical sources. Extant and primary data was accessed. Extant data came from the pertinent published sources, while primary data was collected via a combination of personal and group face-to-face semi-structured interviews and personal observation of heritage sites in the Little Karoo during 2003 and 2004. The main outcome of this research was the development of a South African Heritage Tourism Thematic Framework (SAHTTF). The SAHTTF is, in part, based on and inspired by frameworks from the United States, Australia, Canada and South Africa. There are three tiers within the framework: theme groups, themes and sub-themes. The framework is intended to be flexible and the three tiers can be mixed and matched in whatever way best serves the story of the heritage resource in question. The five theme groups are: Development of the environment; Peopling our land; Way of life; Governing South Africa and Developing South Africa. The whole story of South Africa can be organised and presented using this framework. However, in order to keep this study within reasonable limits, the focus of the story was limited to the heritage story of the Little Karoo. The case studies of the Cango Caves, Cogmans Kloof, Swartberg Pass and Seweweeks Poort tested the effectiveness of the SAHTTF. It is recommended that the SAHTTF be presented to the heritage tourism and heritage management sectors for further evaluation and testing. This research has proved that the SAHTTF can be an effective tool in the identification, organization, interpretation and presentation of heritage resources.<br>AFRIKAANSE OPSOMMING: Die snelle groei van toerisme, veral erfnistoerisme, in Suid-Afrika het tot gevolg dat erfnisbronne onder groot druk geplaas word. Die probleem is deels dat besoekers geen of weinig kennis dra van die kwesbaarheid en belangrikheid van die bronne waarmee hulle handel. Verder is die probleem die belangebotsing tussen erfnistoerisme en erfnisbestuur sektore. Toerisme verbruik erfnisbronne, terwyl erfnisbestuur poog om dit te bewaar. Hierdie probleem is egter nie noodwendig eie aan Suid-Afrika nie en vir die doeleindes van dié studie word die omvang en aard daarvan slegs in die Klein Karoo ondersoek. Die Klein Karoo word beskou as die gebied in die Westelike Provinsie wat in die suide deur die Langeberge en Outenikwaberge en in die noorde deur die Swartberge begrens word. Dit omsluit die dorpe Montagu, Barrydale, Ladismith, Amalienstein, Zoar, Calitzdorp, Vanwyksdorp, Oudtshoorn, Dysselsdorp, De Rust en Herold. Die Klein Karoo kan deur talle passe, poorte en klowe bereik word – die belangrike feit wat in hierdie studie ontgin word. Die navorsing is onderneem ten einde 'n nie-empiriese oplossing vir die impak van die mens op erfnisbronne deur tematiese interpretasie en voorstelling te vind. Dit beoog om die verhouding tussen die bedryf van erfnistoerisme en erfnisbestuur te bestendig deur gedeelde terminologie in die vorm van 'n model of raamwerk. Hierdie raamwerk bied 'n metode om die verhale van erfnis so aan te bied dat beide die bedrywers van erfnistoerisme en -bestuur begrip daarvoor kan ontwikkel. Die doel van die navorsing is om 'n meganisme te vind waardeur die erfnisbronne op 'n tematiese wyse geïdentifiseer, georganiseer, vertolk en aangebied kan word. Hierdie tematiese raamwerk sal hopelik besoekers se ervaring van erfnisbronne verryk en leiding gee rakende die kwesbaarheid van terreine. Data vir die navorsing is uit verskeie empiriese bronne versamel. Bestaande en primêre data is gebruik. Bestaande data was afkomstig van toepaslike publikasies en primêre data is versamel en ingewin via 'n kombinasie van individuele en groepsonderhoude deur middel van semigestruktureerde onderhoude, asook persoonlike waarneming van verskillende erfnisterrreine in die Klein Karoo tussen 2003 en 2004. Die belangrikste opbrengs uit die navorsing is die ontwikkeling van 'n Suid-Afrikanse Erfnistoerisme Tematiese Raamwerk (South Afican Heritage Tourism Thematic Framework – SAHTTF). Die SAHTTF is deels gebaseer op, en geïnspireer deur, soortgelyke raamwerke in die VSA, Australië, Kanada en Suid-Afrika. Daar is drie vlakke in die raamwerk: tematiese groepe, temas en sub-temas. Die raamwerk is aanpasbaar en die drie vlakke kan in enige kombinasie gebruik word om die verhaal of geskiedenis van die betrokke bron ten beste voor te stel. Die vyf tematiese groepe is: Onwikkeling van die omgewing; Bevolking van ons land; Lewenswyses; Regering van Suid-Afrika; en Ontwikkeling van Suid-Afrika. Die hele erfnisverhaal van Suid-Afrika kan georganiseer en voorgestel word deur dié raamwerk. Ten einde hierdie navorsing hanteerbaar te hou, is op die erfnisverhaal van die Klein Karoo gekonsentreer. As gevallestudies het die Kangogrotte, Kogmanskloof, Swartbergpas en Seweweekspoort as toets vir die doeltreffendheid van die raamwerk gedien. Die navorsing beveel aan dat die SAHTTF aan die beheerstrukture van erfnistoerisme en erfnisbestuur voorgelê word vir verdere evaluering en toetsing. Die navorsing het bevind dat die SAHTTF 'n doeltreffende instrument kan wees in die identifisering, organisering, vertolking en voorstelling van ons erfnis bronne.

Thesis (MSc (Geography and Environmental Studies))--University of Stellenbosch, 2005.<br>The morphological form of South African cities is deemed inefficient and fragmented. Much of the current structure has been shaped by i) the political history of the country, with major influences from the colonial and apartheid eras; and ii) suburban sprawl influenced by the use of private vehicles. This presents obstacles to the sustainable and equitable development of our cities. Since the 1990s, efforts have been made to change the development of the country in order to accommodate previously disenfranchised communities through processes of reconstruction and development. Among these efforts are policies and frameworks aimed at guiding the development and growth of cities. Among the many approaches that have been identified are land use strategies, with the central focus of promoting densification and intensification of urban development. Emphasis on densification in certain public transport corridors and decentralised nodes are in general regarded as urban restructuring elements necessary to transform South African cities into efficient and sustainable areas. However, analytical tools that can explore the possibilities and limits of public transport-orientated development are scarce at present. The University of Utrecht in the Netherlands has developed an analytical model referred to as the node-place model, which can be used to profile nodes and to determine their (re)development potential. This study makes a contribution towards efforts to support the densification concept in general and nodal intensification in particular by applying the node-place model to a selection of railway stations in the Cape Town metropolitan area in order to identify appropriate land use developments to enhance their potential. The model was found to be a useful mechanism for comparing nodes within a transport system for purposes of informing decisions regarding how the nodes should be developed. However, the model requires more accurate and disaggregated data than is generally available for the Cape Town area.

Thesis (MA (Geography and Environmental Studies)--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: Issues relating to self-employment and the development of the so-called New Economy gained not only new founded momentum, but also more all round interest over the last two decades, especially from academic researchers. During this time, new emphasis was placed on the importance and significance of location. Consequently, urban areas were finally regarded as instrumental within providing the central backdrop for the competing nature of the global economy. Due to this fact, the emphasis again shifted from competition to the stimulation of investment. Local Economic Development (LED) was the South African method of doing so. Entrepreneurship became a major driving force of the South African market. Within the same past two decades substantial growth took place within Home-based Work, especially within Home-based Enterprise (HBE) activities. This can be attributed to the flexible organization of production that a home-based work (HBW) lifestyle can provide. Within the South-African context there does exists some empirical observations relating to HBW and TBE activities, but these studies have mostly focused on informal neighborhoods and other less affluent areas. This study however places the emphasis on the existence of HBW, selfemployment and HBE’s within all the income-group neighbourhoods in George. The existence of the traditional Spazashops and Shebeens is included, because these examples are extremely relevant within the South African context, but other specialized careers such as medical practitioners, childcare professionals, consultants, and producers of various products are also examined. The study wants to contribute to the discussion of urban sustainable development through the inclusion of HBW and HBE’s as potential strategies to reach sustainability within communities. Because of this, the primary aims and objectives of this study include the nature and extent of HBE activities throughout various neighbourhoods located on the periphery of the urban centre in George. A deeper understanding regarding the reasons behind the locational decision process (thus why participating home- businesses chose George as the location for their Small, Medium or Micro Enterprises (SMME’s) and the consequential location movement of these businesses was also examined. The spatial and structural relationships that exist between the growth and/or movement of formal businesses in the study area was further observed by the creation of a database stretching from 1995 to 2005 that lists and map these locational changes.<br>AFRIKAANSE OPSOMMING: Kwessies wat verband hou met selfwerksaamheid en die ontwikkeling van die sogenaamde Nuwe Ekonomie het oor die afgelope twee dekades reeds heelwat aandag vanaf navorsers geniet. Hernieude klem is geplaas op die belangrikheid van ligging, en stede word deesdae beleef as instrumenteel om ’n sentrale en mededingende rol te speel binne die globale ekonomie. As gevolg van hierdie stedelike mededingendheid het die fokus verskuif na die bevordering van investering. Gevolglik het Plaaslike Ekonomiese Ontwikkeling (PEO) in Suid-Afrika toenemende verandering na markgedrewe entrepreneurskap veroorsaak. Daar het ook tydens die afgelope twee dekades ’n aansienlike groei in Tuisgebaseerde Werk (TGW), veral onder Tuisgebaseerde Besigheid (TGB) aktiwiteite plaasgevind. Hierdie fenomeen kan toegeskryf word aan faktore soos die buigbare organisasie van produksie wat met ʼn TGW lewenswyse kan voorsien. Daar bestaan wel ’n aantal empiriese waarnemings rakende TGW en TGB aktiwiteite in Suid-Afrika maar hierdie studies is meestal gemik op informelenedersettings en mindergegoede areas. Hierdie studie plaas dus groter klem op die bestaan van TGW, selfwerksaamheid en TGB’e binne al die inkomste woonbuurte in George. Die bestaan van TGB’e in die minder-gegoede areas vorm ook deel van hierdie studie (byvoorbeeld die tradisionele Spaza of Huiswinkel en Smokkelhuis/ "Shebeen“ aangesien dit onmisbaar is binne die Suid-Afrikaanse konteks, maar ander gespesialiseerde beroepe wat ook in ’n woonbuurt kan voorkom (byvoorbeeld mediese praktisyns, kinderbewaarskole, konsultante en vervaardigers van allerlei) word ook ondersoek. Hierdie studie will graag bydra tot die bespreking van stedelike volhoubare ontwikkeling deur TGB’e te oorweeg as potensiële strategie om hierdie volhoubaarheid te bereik in gemeenskappe. Daarom is die primêre doelstellings van hierdie studie om die aard en omvang van TGB aktiwiteite tussen verskillende woonbuurte op die stedelikehinderland (in die omtrek van die stedelike kern) in George te ondersoek, ’n diepere begrip te bereik rakende die redes vir die besluite van hierdie deelnemende tuisondernemings (Klein-, Medium- en Mikro-ondernemings) om spesifiek George as vestiging te kies en laastens, die ruimtelike en strukturele verhoudinge wat duidelik is vanuit die formele groei (formele besighede se uitbreiding en/of verskuiwing) in George sedert 1995.

Thesis (MA (Geography and Environmental Studies))--University of Stellenbosch, 2006.<br>ENGLISH ABSTRACT: Criminal activity and police station locations have an inherent geography that needs to be understood in order for crime prevention strategies to be reasonably effective. This study analysed the spatiotemporal pattern of crime in the city of Manzini, in Swaziland, for the period of 2004 and determined suitable locations for future police stations. Four categories of crime were analysed. These were crimes against property, crimes against people, drug related crimes and crimes against public order. Five main analyses were performed namely: overlay analysis, proximity analysis, temporal analysis, morphological analysis, and accessibility analysis. The findings suggest that crimes against property are the most prevalent category of crime in Manzini with a prevalence rate of 84.2%. This category was followed by crimes against people (11.9%), drug related crimes (3.5%), and crimes against public order (0.4%). Landuses associated with transportation experienced the highest amount (22%) of crime in Manzini. There was a strong relationship between incidents of crime and areas with medium to high population density. The proximity analysis revealed that the highest concentration of incidents of crime was between 50 and 100 metres from alcohol serving establishments in Manzini. In a similar analysis, the proximity of incidents of crime to educational institutions was concentrated between 500 and 1000 metres whereas the proximity of incidents of crime to the Manzini police station was dominant between 250 and 500 metres. Of all recorded incidents of crime 87% occurred during the day while 13% occurred during the night. In areas of high-crime concentration such as the bus rank and the Manzini market, it was established that the structural layout of these areas promoted criminal activity. The accessibility analysis showed that seven police stations are necessary to ensure that people do not walk more than 30 minutes to the nearest police station in Manzini. The study concluded that crime prevention strategies would require the intervention of both the police and city planners to be reasonably successful. It also noted that the establishment of accessible police stations would complement the efforts of the police in their endeavour to combat crime in Manzini.

Thesis (MSc (Geography and Environmental Studies))--University of Stellenbosch, 2009.<br>Botswana, a developing country in southern Africa, has not been spared the proliferating scourge of traffic accidents that is sweeping across the world. After HIV/AIDS, traffic accidents are the second largest cause of unnatural deaths in Botswana. The country is losing two per cent of its GDP every year to traffic accident costs. Furthermore, road safety is one of the major challenges the country will have to overcome in order to achieve its Vision 2016. This study investigates traffic accidents in Gaborone, the capital city of Botswana, for the years 2000 and 2005. The study analyses the characteristics of traffic accidents, examines their causes, maps the spatial distribution of traffic accidents for 2000 and 2005, and outlines the countermeasures government is instituting to curb accidents. The main data on traffic accidents used was extracted from the microcomputer accidents analysis package V5.0 (MAAP 5) obtained from the Traffic Police Division. Semi-structured interviews with transport and safety officers, traffic police and other stakeholders were conducted. The interviews were mainly about what government is doing to reduce the carnage caused by traffic accidents. Existing reports were also used as data sources. Microsoft Excel and ArcGIS 9.1 packages were used to do the analyses. The road casualties of drivers/riders are concentrated in the economically active age category of 15-64 years (95% for all casualties). In particular, the casualties are very high in the 20-39 age cohort with one third and three quarters of all casualties for 2000 and 2005 respectively. In addition, driver casualties by gender for the 20-39 age cohort show a high representation of males, namely 57% and 64% for 2000 and 2005 respectively.

Thesis (MSc (Geography and Environmental Studies))--University of Stellenbosch, 2009.<br>As with any form of intensive agriculture, there are potential environmental impacts associated with the management and housing of livestock on dairy farms. Within the field of dairy farming, particular focus falls to the issue of environmental degradation of water resources, as this form of pollution is currently a major environmental issue around the world. Conventional agricultural practices involving the application of chemical fertilizers to land and crops are causing environmental problems as a result of poor management practices. Dairy wastewater and manures could however be a valuable resource for agricultural producers in the form of an alternate fertilizer for their crops. Waste application as a fertilizer is more environmentally friendly than chemical fertilizers, and could drastically reduce costs for farmers, whilst alleviating storage and management problems often associated with farmyard manures (FYM). The application of organic wastes, notably livestock manures, to land has historically been important for maintaining soil fertility on farms in terms of nutrient status and organic matter levels, as well as helping to reduce soil erosion and improve waterholding capacity. The research sought to investigate the environmental and economical feasibility of using dairy wastewater and manures as an alternative form of fertilizer within agriculture in South Africa.

Thesis (MA)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: The aim of the study was to determine the application of green building practices in Stellenbosch. In order to achieve this aim certain objectives had to be met. The first objective was to retrieve national and international literature on green building initiatives. Six main sections were discussed in the literature namely, climate change and the environment, the built environment, the concept of sustainability in cities and buildings, green building designs and practices, green buildings, green building councils and the different green rating systems, with a specific focus on the Green Star SA rating tool. The second objective was to discuss three case scenarios in Stellenbosch that practice green initiatives. The case scenarios selected are Distell Group Limited, Spier wine estate and the new Remgro head office Millenia park. Buildings in Stellenbosch selected by means of probability sampling. A total of 35% of all commercially zoned buildings in the Stellenbosch core were selected to participate in the sample. The land zoning maps from the Stellenbosch municipality was obtained and relevant buildings were sampled. Nine of the sampled buildings were heritage buildings (older than sixty years) and seventeen were buildings from the modernist era (younger than sixty years). Nine architect companies in Stellenbosch were also sampled. The respondents were determined by means of haphazard sampling. The third objective was to design two questionnaires, one for building owners and another for architects. The first questionnaire developed for building owners was divided into two sections. The first section determined what green practices owners are incorporating into their office buildings. These green practices developed in the questionnaire focused on the use of natural light in the buildings, LED lights, indoor ventilation, recycling methods, water saving methods, energy saving methods and whether management plans exist to monitor and evaluate the buildings energy usage. The second section focused on the perception of the building owners. The respondents had to rate the importance of the above mentioned green initiatives on a scale of one 1 (being not at all) to 5 (being very important). The fourth objective was to develop a questionnaire for architects. The questionnaire determined whether green designs are incorporated by architects and if there is a greater demand for green designs by clients. The findings of the study revealed that respondents find natural light and air quality to be the most important aspects in an office. Recycling is applied by 93% of respondents. Less than 10% of respondents have installed solar panels, HAVC systems, rain water harvesting or other water management systems. Architects find that there has been an increase in the demand for green designs, but that there is a lack of knowledge of green initiatives by building practitioners. The main recommendations of the study are that the concept of green development be broadened into other spheres apart from planners. Education and training of green building must be available to all building owners and practitioners. Sustainable materials should be more accessible to building practitioners and these materials should be made available locally. Finally more buildings should be refurbished or renovated rather than be demolished to prevent waste and secure open spaces.<br>AFRIKAANSE OPSOMMING: Die doel van die studie was om die toepassing van groen initiatiewe in Stellenbosch te bepaal. Ten einde hierdie doel te bereik moes daar aan sekere doelwitte voldoen word. Die eerste doelwit was om nasionale en internasionale literatuur oor groen inisiatiewe te verkry. Ses hoof afdelings is bespreek in die literatuur, naamlik verandering van die klimaat en die omgewing, die Beboude-omgewing, die konsep van volhoubaarheid in stede en geboue, groen gebou ontwerp en praktyke, die rade vir omgewings vriendelike geboue en groen evalueering stelsels. Die tweede doelwit was om drie gevalle studies is Stellenbosch te bespreek wat groen inisiatiewe beoefen. Die gevalle studies wat bespreek word is Distell Eiendoms Beperk, Spier landgoedere en Remgro se nuwe hoof gebou Millenia Park. Waarskynlikheids steekproewe is gebruik om die geboue te identifiseer vir die veld werk, ʼn totaal van 35% van al die kommersiëele gesoneerde geboue in die Stellenbosch-kern is geselekteer om deel te neem in die steekproef. Die landsoneringskaarte van die Stellenbosch-munisipaliteit is verkry en betrokke geboue was geselekteer. Nege van die geselekteerde geboue was historiese geboue (ouer as sestig jaar) en sewentien was geboue van die modernistiese era (jonger as sestig jaar). Nege argiteks maatskappye in Stellenbosch is ook geselekteer vir die studie. Die respondente is deur middel van’n lukrake steekproef bepaal. Die derde doelwit was om twee vraelyste te ontwerp, een vir die eienaars van die geboue en die ander vir argitekte. Die eerste vraelys wat ontwikkel is vir die gebou-eienaars is verdeel in twee afdelings. Die eerste afdeling bepaal watter groen praktyke eienaars implimenteer in hul kantoor geboue. Die groen praktyke in die vraelys fokus op die gebruik van natuurlike lig in die geboue, LED ligte, binnenshuis ventilasie, herwinning, water besparing metodes, energie besparing metodes en bestuur planne wat opgetrek is om die energie verbruik van geboue te monitor en te evalueer. Die tweede afdeling van die vraelys fokus op die persepsie van die gebou-eienaars. Die respondente het die belangrikheid van die bogenoemde groen inisiatiewe gradeer op 'n skaal van een 1 (glad nie) tot 5 (baie belangrik). Die vierde doelwit was om 'n vraelys te ontwikkel vir argitekte. Die vraelys bepaal of groen ontwerp op geneem is deur argitekte en indien daar 'n groter aanvraag na groen ontwerpe deur kliënte is. Die bevindings van die studie het getoon dat die respondente natuurlike lig en die gehalte van binnenshuis lug as die belangrikste aspekte in di kantoor ag. Herwinning is deur 93% van respondente toegepas. Minder as 10% van die respondente het sonpanele, HAVC stelsels, reën wateropvangsisteme of ander watersparingssisteme geinstaleer. Argitekte vind dat daar 'n toename in die vraag na groen ontwerpe is, maar dat daar 'n gebrek aan kennis oor groeninisiatiewe is deur prakisynes . Die aanbevelings van die studie is dat die konsep van groen ontwikkeling versprei moet word na ander sfere behalwe beplanners. Inligting en opleiding oor omgewingsvriendelike geboue moet beskikbaar wees aan alle gebou-eienaars en praktisynes. Volhoubare materiale moet meer toeganklik wees vir bou praktisynes en hierdie materiale moet ook plaaslik beskikbaar gestel word. Laastens moet meer geboue opgeknap word eerder as om gesloop te word, om afval te voorkom en oop ruimtes te behou.

Thesis (MSc)--Stellenbosch University, 2004.<br>ENGLISH ABSTRACT: Grazing management in the semi-arid communal areas of Namaqualand is investigated in this study. Paulshoek, situated in the Leliefontein Communal Reserve area, is delineated as the study area and consists of 20 OOOha.Cattle farming is practised by most households primarily on a subsistence basis. It is also used as a source of income when financial problems arise. The management of grazing-land in terms of formal rules and regulations is non-existent with only mutual relationships between farmers. The aim of this study is to develop a spatial framework for the management of a sustainable grazing regime with the aid of Geographic Information Systems (GIS) technology. This aim is reached through three overlapping goals which are researched individually. The goals are to create a spatial image of the physical resource base as well as resource usage and from this the development of a computerised (Excel spreadsheet) spatial management framework for sustainable grazing management. Through the use of existing data available from the National Botanical Institute (NB!) as well as other sources and with the aid of GIS technology, coupled with Indigenous Knowledge, these goals were reached. The stockpost as individual entity is studied to give a broader understanding of how the herdsmen see their immediate environment. The grazing management system, as presented in this thesis, consists of a simple Excel Spreadsheet, with inputs from GIS technology and Indigenous Knowledge. The area is overgrazed, as is seen in the widespread occurrence of kraalbos cross the Paulshoek landscape. The recommendations are that this management system should be implemented, which could minimize the futher overgrazing of the area. The management system relies heavily on the cooperation of the community and the integration of existing management systems and policies. It will give a more detailed account of who may own how many stock and where they may graze in the communal rangelands which will also help in the establishment of new permanent waterpoints in the area.<br>AFRIKAANSE OPSOMMING: Weidingsbestuur in die semi-ariede gemeenskaplike gebiede van Namakwaland is in hierdie studie ondersoek. Paulshoek, geleë in die Leliefontein Gemeenskapsreservaat gebied, word as studiegebied afgebaken en beslaan ongeveer 20 OOOha.Veeboerdery word deur meeste van die huishoudings primêr as bestaansboerdery beoefen. Dit word ook gebruik as 'n bron van inkomste wanneer finansiële probleme ondervind word. Die bestuur van weivelde in terme van formele reëls en regulasies is glad nie ter sprake nie, slegs onderlinge verhoudinge tussen veeboere bestaan. Die doel van hierdie studie is om 'n ruimtelike raamwerk te ontwikkel vir die bestuur van 'n volhoubare weidingsregime deur die aanwending van Geografiese Inligting Stelsels (GIS). Hierdie doel word behaal deur drie oorkoepelende doelwitte wat elk afsondelik behandel word. Die doelwitte is om 'n ruimtelike beeld van die fisiese hulpbronbasis asook die benuttingsregime van die hulpbron te skep, en hieruit 'n rekenaar-gesteunde (Excel sigblad) ruimtelike bestuursraamwerk vir volhoubare weidingsbestuur te ontwerp. Deur gebruik te maak van bestaande inligting afkomstig vanaf Nasional Botaniese Instituut (NBI) asook ander bronne en met die koppeling van GIStegnologie en Inheemse Kennis (IK) is die doelwitte bereik. Die veepos word as entiteit behandel om 'n beter verstandhouding op te bou van hoe die veewagter sy onmiddelike omgewing bestuur. Die weidingsbestuurstelsel, soos voorgestel in hierdie tesis, bestaan uit 'n eenvoudige Excel sigblad, gekoppel aan GIS-tegnologie en Inheemse Kennis. Die gebied is oorbeweid, soos gesien kan word aan die verspreiding van kraalbos regoor die landskap van Paulshoek. Die aanbevelings is dat die bestuurstelsel geïmplementeer moet word om te verhoed dat die gebied verder onderhewig sal wees aan intensiewe beweiding. Die bestuurstelsel berus op die samewerking van die gemeenskap en die integrasie van bestaande bestuurstelsels. Dit sal tot gevolg hê 'n meer volledige opname van wie hoeveel vee mag besit en wie waar mag vestig in die weiveld gebied, wat gevolglik ook die skepping van nuwe permanente waterbronne sal vergemaklik.

Thesis (MA (Geography and Environmental Studies))--Stellenbosch University, 2009.<br>ENGLISH ABSTRACT: Gated developments (GDs) are a global phenomenon with their presence and numbers increasing in many cities throughout the world. This is also true for cities in South Africa, including Cape Town which has seen a dramatic increase in the number of GDs during the last decade. GDs pose significant challenges to their surrounding urban environments and to cities as a whole because of the spatial and social fragmentation associated with such developments. The challenges created by GDs are especially relevant in the context of the post-apartheid planning goals of integration and sustainability of cities in South Africa. There is a pressing need to understand these GDs in their social and spatial contexts. This study examined aerial photographs to establish the spatial distribution of GDs, ascertain their growth over time and determine clustering of the phenomenon in the north-eastern suburbs of Cape Town. The architectural characteristics and the security measures employed by the GDs were investigated through field observations of a sample of GDs. The socio-economic and demographic features, as well as the daily activity spaces of the residents of the GDs, were determined in a questionnaire survey of a sample of these inhabitants. These investigations provided a detailed look at the gating phenomenon as it manifests in a post-apartheid city, namely Cape Town. The study is of particular interest to urban geographers, town and regional planners, and urban policy makers dealing with the integration of post-apartheid cities. The study found that the GDs constrain progress toward reaching the post-apartheid planning goals of integration and urban sustainability by their contribution to increasing urban fragmentation and urban sprawl through their clustering close to the urban edge. The GDs also promote social segregation through their high perimeter defences with low visual permeability which effectively separate the developments from their neighbourhoods. The use of a larger sample on which to base the socioeconomic and demographic profiles of GD residents as well as the use of more recent aerial photography will enhance future studies of the gating phenomenon. A thorough analysis of travel patterns and traffic volumes in neighbourhoods with large clusters of GDs will advance an understanding of this phenomenon’s effects on urban segregation and fragmentation.<br>AFRIKAANSE OPSOMMING: Sekuriteitsoorde is ʼn globale verskynsel wat toenemend in teenwoordigheid en getalle wêreldwyd in die meeste stede voorkom. Dit is ook die geval in Suid-Afrikaanse stede, insluitend Kaapstad wat in die laaste dekade ʼn dramatiese toename in die getal sekuriteitsoorde beleef het. Sekuriteitsoorde hou ʼn paar gewigtige uitdagings vir die omliggende stedelike omgewings en dié vir die groter stad in as gevolg van die ruimtelike en sosiale fragmentasie wat met hierdie ontwikkelings geassosieer word. Hierdie uitdagings is veral relevant vir die huidige Suid-Afrikaanse beplanningsbeleid wat na 1994 in werking getree het en wat stedelike integrasie en volhoubare stedelike ontwikkeling beklemtoon. Dit is belangrik om sekuriteitsoorde binne hulle sosiale en ruimtelike kontekste te bestudeer. Lugfoto’s is bestudeer om die ruimtelike manifestasie (ligging, groei en konsentrasie) van hierdie verskynsel in Kaapstad se noordelike voorstede te ontleed. Verder is ʼn steekproef van sekuriteitsoorde ter plaatse ondersoek om die argitektoniese kenmerke en die sekuriteit maatreëls van die ontwikkelings te bestudeer. Die sosio-ekonomiese en demografiese profiele sowel as die daaglikse aktiwiteitsruimtes van sekuriteitsoordinwoners is deur middel van ʼn vraelysopname van ʼn steekproef van inwoners vasgestel. Hierdie ondersoeke het ʼn diepgaande blik op geslote ontwikkelings in stede wat gekenmerk is deur apartheidstyl beplanning (soos Kaapstad) gegee. Die bevindings is dus veral relevant vir stedelike geograwe, stads- en streeksbeplanners en stedelike beleidmakers wat met die integrasie van na-apartheidstede te doen het. Die studie het bevind dat hierdie ontwikkelings die bereiking van die na-apartheidsbeplanningsdoelwitte van stedelike integrasie en volhoubare stedelike ontwikkeling belemmer deur stedelike fragmentasie en stedelike wildgroei te bevorder deur konsentrasies van hierdie ontwikkelings naby die stedelike grens te vestig. Sosiale fragmentasie word ook deur hierdie ontwikkelings aangehelp deur hulle neiging om hoë grensmure met lae visuele deursigtigheid te gebruik wat effektief die ontwikkelings van hul buurt afsonder. Die studie kan verbeter word deur ʼn groter steekproef te gebruik om die sosioekonomiese en demografiese profiele op te baseer, asook om jonger lugfoto’s in te span. ʼn Deeglike ondersoek van reispatrone en verkeersvolumes in die woonbuurte met groot konsentrasies geslote ontwikkelings sal ʼn beter begrip van die verskynsel se impakte op stedelike segregasie en fragmentasie bevorder.

Thesis (MA (Geography and Environmental Studies))--University of Stellenbosch, 2009.<br>ENGLISH ABSTRACT: Tourism development is a complex process which many researchers have attempted to understand from various social science perspectives. This study adopts a geography approach to analyse tourism development in the Inhambane Coastal Zone (ICZ) by using the Miossec (1976) and the Butler (1980) models as basic frameworks for analyses. Although both models were found to be useful, they require more accurate data than what was generally available for the ICZ. Before the country’s independence in 1975, Mozambique was considered one of many premier tourism destinations in Southern Africa and the tourism sector had played an important role in the economy of the country. The 16 years period of internal conflict (1976- 1992) resulted in a rapid decline in the performance of the sector. Since the end of the armed conflict in 1992 and the democratic transition, a slow recovery of the tourism sector in Mozambique has set in. Tourism facilities for accommodation and leisure activities have increased considerably over the last ten years, despite the absence of any integrated tourism planning. In this study questionnaire surveys of tourist establishment representatives and local residents as well as focus group discussions and interviews were conducted to acquire primary data to analyse the evolution of the ICZ as a tourist destination during the period 1992 to 2008. In addition, secondary sources such as reports, tourism plans, tourism statistics and maps of the study area were used. It was found that tourism is developing slowly in the ICZ and the opening up (or rediscovering) of the zone as a destination remains limited due to the slow development of infrastructure in general. The tourism nodes are in different stages of their destination life cycle and the local residents living in the seven communities react differently toward tourism development. The ICZ has not progressed further than phase two in Miossec’s model. The Miossec model was found a suitable tool for analysing tourism development in the ICZ but it remains a challenge to identify both the evolutionary stage of the ICZ as a destination and the stage of each tourism node. The study also found that local residents in the ICZ expressed positive views about tourism development but they are still not satisfied with the current benefits they acquire from the current development status of tourism in the zone.<br>AFRIKAANS SUMMARY: Baie navorsers het reeds gepoog om die komplekse proses van toerisme-ontwikkeling vanuit verskeie sosiaal-wetenskaplike benaderings te verstaan. Hierdie studie volg ʼn geografiese benadering ten einde toerisme-ontwikkeling in die Inhambane Kussone (ICZ) met behulp van die Miossec (1976) en Butler (1980) modelle as basiese raamwerke te analiseer. Alhoewel beide modelle as bruikbaar bevind is, benodig hierdie modelle meer akkurate data as wat algemeen vir die ICZ beskikbaar is. Voor die land se onafhanklikheid in 1975, was Mosambiek gereken as een van vele vername toerisme bestemmings in Suidelike Afrika en die toerisme sektor het ʼn belangrike rol in die ekonomie van die land gespeel. Die 16 jare lange interne konflik (1976-1992) het tot ʼn snelle agteruitgang van die sektor se prestasie gelei. Sedert die einde van die gewapende konflik in 1992 en die oorgang na ʼn demokrasie, het die toerisme sektor in Mosambiek ʼn stadige herstel beleef. Toerisme fasiliteite vir akkommodasie en ontspanningsaktiwiteite het, ten spyte van die afwesigheid van geïntegreerde toerisme beplanning, aansienlik toegeneem. In hierdie studie is daar deur middel van ‘n vraelysopname aan verteenwoordigers van toerisme verwante besighede en plaaslike inwoners, asook fokus-groep besprekings primêre data in gesamel ten einde die evolusie van die ICZ as toeriste bestemming gedurende die tydperk vanaf 1992 tot 2008 te analiseer. Daarbenewens is sekondêre bronne soos verslae, toerisme planne, toerisme statistieke en kaarte van die studiegebied gebruik Daar is bevind dat toerisme in die ICZ stadig ontwikel en dat die herontdekking van die sone as bestemming beperk bly as gevolg van die stadige ontwikkeling van die infrastruktuur in die algemeen. Die toerisme nodusse is in verskillende stadia van hulle individuele bestemmingsiklusse, en die plaaslike inwoners in die sewe gemeenskappe reageer verskillend teenoor toerisme ontwikkeling. Die ICZ het nie verder as fase twee van die Miossec model gevorder het nie. Daar is ook vasgestel dat die Miosec model ʼn gepaste instrument is vir die analise van toerisme ontwikkeling in die ICZ, maar dit bly ʼn uitdaging om die evolusionêre stadium van die ICZ as ‘n bestemming in geheel asook die stadium van elke toerisme-nodus te kan identifiseer. Die studie het ook bevind dat plaaslike inwoners van die ICZ positiewe menings oor toerisme ontwikkeling het, maar nog steeds nie tevrede is met die huidige voordele wat hulle uit die huidige ontwikkelingstatus van toerisme in die sone ontvang nie.

Thesis (MA (Geography and Environmental Studies))--University of Stellenbosch, 2011.<br>ENGLISH ABSTRACT: Land for agricultural development gets scarcer as more and more agricultural land is being transformed by non-agricultural uses. The increased agricultural land use change in the Western Cape Province results in transformation, fragmentation and loss of productive agricultural land. With the A2 planning area of the Department of Environmental Affairs and Development Planning (DEADP), in the Boland region of the Western Cape, as its study area, this study investigates the role of legislative control measures on changes of land use from agriculture to a different form of development, by analysing the Environmental Impact Assessment (EIA) applications for the change of agricultural land use and agriculture applications for the conversion of undeveloped land for the period 1 January 1998 to 3 July 2006. The study examines the role that the relevant legislation plays in agricultural land use control; considers the nature, extent and reasons for agricultural land use change in the study area (under the Environment Conservation Act (Act 73 of 1989) (ECA)); determines the impacts associated with the transformation of agricultural land use in the study area by assessing transformation of undeveloped land applications (captured under the Conservation of Agricultural Resources Act (Act 43 of 1983) (CARA)); and measures the amount of agricultural land potentially lost to development through EIA change of land use applications (according to the DEADP database) opposed to the amount of agricultural land potentially gained through conversion of undeveloped land (according to the DoA database). Two databases were created, based on variables obtained from EIA change of agricultural land use applications authorised by DEADP [DEADP’s database] and conversion of undeveloped land for agricultural use, authorised by the Department of Agriculture (DoA)[DoA’s database]. The variables used to create DEADP’s database are the applicant, property owner, type of property, development function, year of authorisation, municipality, town, size of property, permanent and temporary jobs created, percentage of property developed, footprint of development, existing land use and unique source. The variables used to create DoA’s database are the year of authorisation, new and existing land use, year of authorisation, municipal area, property owner, percentage of property converted and footprint of development. The variables in the two databases are analysed using cross tabulations, with the variables measured against each other using pivot tables. The final tables are investigated through interpretation of the results and making recommendations for better management and planning in the future, based on relevant literature. The main findings are that DEADP gave authorisation for 416 agricultural land use change developments between 1 January 1998 and 3 July 2006, resulting in 2855 hectares of agricultural land potentially being developed. It was also found that DoA gave approval for 118 undeveloped land conversion applications, converting a total of 2589 hectares for agricultural purposes. The findings also revealed that 1707ha of this undeveloped land were covered with indigenous vegetation, while only 299ha were covered with alien vegetation. The challenge is to use valuable agricultural land optimally and sustainably for agricultural purposes. Non-agricultural developments should be kept within the urban edge and away from valuable agricultural land. If such development must take place on agricultural land, it must be done on the poorest soils and should not jeopardise agricultural activities. Keywords: land use change, undeveloped land, applicant, property owner, type of property, development function, year of authorisation, municipality, town, size of property, permanent jobs, temporary jobs, percentage of property developed, footprint of development, existing land use, new land use and unique source.<br>AFRIKAANSE OPSOMMING: Grond vir landbou ontwikkeling word al hoe skaarser namate meer en meer landbougrond omskep word vir ander grondgebruike. Die gevolg is dat meer landbougrond in die Wes-Kaap omskep word vir ander ontwikkelingsdoeleindes, wat lei tot transformasie, fragmentering en verlies van produktiewe landbougrond. Met die A2 beplanningsgebied van die Departement van Omgewingsake en Ontwikkelingsbeplanning (DOeOB), wat geleë is in die Boland streek van die Wes-Kaap, as studiegebied, ondersoek hierdie studie die rol van wetgewende beheermatreëls op grondgebruiksverandering vir die periode 1 Januarie 1998 tot 3 Julie 2006, deur Omgewingsimpakbepalings (OIB) aansoeke wat ‘n verandering van landbougrondgebruik insluit, asook landbou aansoeke wat die omskepping van onontwikkelde grond insluit, te ontleed. Die studie ondersoek die rol wat relevante wetgewing in landbougrondgebruikskontrole speel; analiseer die aard, omvang en redes vir landbougrondgebruiksverandering in die studiegebied soos voor aansoek gedoen in terme van die Wet op Omgewingsbewaring (Wet 73 van 1989); die impakte wat geassosieer word met transformasie van landbougrond deur verandering van landbougrondgebruik soos voor aansoek gedoen in terme van die Wet op Bewaring van Landbouhulpbronne (Wet 43 van 1983); en vergelyk die hoeveelheid landbougrond wat potensieel omskep is vir ontwikkeling deur middel van OIB verandering van grondgebruik aansoeke (volgens DOeOB databasis) teenoor die hoeveelheid nuwe landbou grond wat potensieel geskep is deur onontwikkelde grond te omskep vir landbou (volgens DvL databasis). Twee databasisse is geskep, gebaseer op veranderlikes wat verkry is uit OIB-aansoeke wat ‘n verandering van landbougrondgebruik ingesluit het en deur DOeOB goedgekeur is [DOeOB databasis] en aansoeke wat ‘n verandering van onontwikkelde grond vir landboudoeleindes insluit, goedgekeur deur die Departement van Landbou (DvL) [DvL databasis]. Die veranderlikes in die DOeOB databasis te skep sluit die volgende in: aansoeker, eienaar, tipe eiendom, tipe ontwikkeling, jaar van goedkeuring, munisipale area, dorp, groote van eiendom, permanente en tydelike werksgeleenthede geskep, proporsie van grond ontwikkel, voetspoor van ontwikkeling, bestaande grondgebruik, nuwe grondgebruik en unieke bron. Die veranderlikes in die DvL databas is: jaar van goedkeuring, nuwe en bestaande grondgebruik, munisipale area, dorp, grondeienaar, proporsie van grond ontwikkel en voetspoor van ontwikkeling. Die veranderlikes in die twee databasisse is ontleed deur kruistabelle. Die finale tabelle word geanaliseer deur die resultate te interpreteer en voorstelle te maak vir beter bestuur en beplanning in die toekoms, gebaseerd op relevante literatuur. Die hoof resultate van die studie toon dat DOeOB goedkeuring gegee het vir 416 landbougrondgebruiksveranderingontwikkelings tussen 1 Januarie 1998 en 3 Julie 2006, wat moontlik veroorsaak het dat 2855 hektaar landbougrond ontwikkel is. Die resultate dui ook dat DvL goedkeuring uitgereik het vir 118 ontwikkeling van onontwikkelde grond aansoeke, wat ’n totaal van 2589 hektaar grond potensieel omskep het vir landbou doeleindes. Die bevindinge bevestig ook dat 1707 hektaar van die onontwikkelde grond bedek was met inheemse plantegroei, terwyl slegs 299 hekaar bedek was met uitheemse plantegroei. Die uitdaging vir die toekoms is om vrugbare landbougrond optimaal en volhoubaar te gebruik vir landbou. Nie-landbou ontwikkelings moet binne die stedelike grens geskied, weg van vrugbare landbougrond. Indien ontwikkeling op landbougrond plaasvind, moet dit op lae-potensiaal landbou grond geskied en geensins landbou aktiwiteite benadeel nie. Kernwoorde: grondgebruiksverandering, onontwikkelde grond, aansoeker, eiendoms eienaar, tipe eiendom, tipe ontwikkeling, jaar van goedkeuring, munisipale area, dorp, groote van eiendom, permanente werksgeleenthede, tydeike werksgeleenthede geskep, persentasie van grond ontwikkel, voetspoor van ontwikkeling, bestaande grondgebruik, nuwe grond gebruik en unieke bron.

Thesis (MSc)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: Gully erosion is a major environmental problem not only having direct influences on site but also indirect influences felt further down the catchment. Combating gully erosion has proven to be elusive due to the difficulty in finding the causal factors and developing mechanisms involved. Soil is the medium in which gully erosion occurs yet few research have investigated it as a driving factor behind gully development and those that have has done it in a very elementary way. The first aim of this project was to physically and chemically characterise and classify the discontinuous gully system at Malansdam to establish the relationship between landscape hydrology and geomorphologic gully development with a focus on control factors. This was done by field observations, physical measurements and spatial and hydrological analyses with a Geographical Information System (GIS). The Malansdam gully system was the first ever recorded Strahler stream order (SSO) 5 classical gully system with the most active region being in the upper reaches where a steeper slope is experienced. Although piping was observed the V-shape channels and SAR data from traditional wet analysis indicated runoff to be the dominant formation process. A duo of factors, consisting of one anthropogenic and one natural factor respectively, was found that the major control factors behind the gully formation. A unique anthropogenic factor that has never been published beforehand was found to be the anthropogenic driving factor namely the ploughed contour cultivation technique employed by the farmers in the Sandspruit catchment. The ploughed contours act as channels firstly collecting and secondly moving water that would have drained naturally downwards in the valley to one exit point in the gully system. This allows increased erosive energy because of the larger volumes of water entering one single point in the upper reaches of the gully system where a steeper slope is experienced. The driving factor in the natural group was determined to be weak soil structure due to an abundant amount of exchangeable Mg2+ cations occupying the exchange sites on the clay fraction. This would cause soil to disperse in the presence of water even with a low amount of exchangeable Na+. Combat methods would accordingly exist in the form of rectifying the soil structure and finding an alternative to the ploughed contour system currently employed, but also planting vegetation especially grass or wheat in the gully channels. The second aim of this project was to determine the capability of Near Infrared (NIR) spectrometry, with wavenumbers 12 500 – 4 000 cm-1, to predict indicators used in soil science to establish the dispersive nature of a soil. These indices included the Exchangeable Sodium Percentage (ESP), Sodium Absorption Ratio (SAR), Magnesium Saturation Percentage (MS%), Electrical Conductivity (EC), Potential Hydrogen (pH) as well as the four main exchangeable cations namely calcium (Ca2+), potassium (K+), sodium (Na+) and magnesium (Mg2+). Surface and subsurface soil samples were collected from active gully heads. These samples were minimally pre-processed thus only dried, milled and sieved. Thereafter it was subject to NIR analysis making use of the Bruker multi-purpose FT-NIR Analyser (MPA; Bruker Optik GmbH, Germany) with a spectral range of 12 500cm-1 to 4000cm-1 which is. Partial Least Square Regression (PLSR) models were built for each index and the exchangeable cations making use of QUANT 2 utility of OPUS 6.5 (MPA; Bruker Optik GmbH, Germany) software. Five different regrssion statistics namely the coefficient of determination (r2), Root Mean Square Error of Cross Validation (RMSECV), Ratio of Performance to Deviation (RPD), Bias and the Ratio of Performance of Quartiles (RPIQ) were used to assess the legitimacy of each PLSR model. Upon validation all the PLSR models performed in line with previously published work and in certain cases better. The only exception was MS% which would require further investigation. NIR thus possess the capability to predict a soil’s dispersive nature in a fast, reliable, inexpensive and non- destructive way, thus implying whether or not it contributes to gully erosion at a significant level or only minimally.<br>AFRIKAANSE OPSOMMING: Donga erosie is 'n groot omgewingsprobleem. Dit het nie net ‘n direkte invloed op die area waar dit geleë is nie, maar het ook ‘n indirekte invloed wat elders in die opvangsgebied ervaar word. Bekamping van donga erosie is moeisaam aangesien die faktore wat aanleiding gee tot die vorming en dryf daarvan moeilik is om te bepaal. Grond is die medium waarin erosie plaasvind, maar daar is nogtans steeds min navorsing wat grond ondersoek het as ‘n moontlike faktor aanleiding gee tot donga erosie. Die wat dit al wel ingesluit het, het dit slegs op n baie elemntêre manier ondersoek. Die eerste doel van hierdie projek was om die diskontinue donga stelsel fisies en chemise te karakteriseer en klassifiseer om soedoende die verhouding tussen die landskap hidrologie en geomorfologiese donga ontwikkeling te bepaal met n fokus op die faktore wat dit dryf. Dit was gedoen deur middel van observasies gedoen terwyl veldwerk uitgerig was, fisiese metings asook ruimtelike en hidrologiese analises deur gebruik te maak van n Geografiese Inligting Stelsel (GIS). Die klassieke Malansdam donga stelsel is ‘n Strahler stroomorde (SSO) van 5 toegeken en is die eerste een ooit wat dit behaal het. Die mees aktiefste area was in die bolope waar die steilste helling ervaar was. Alhoewel ondergrondse pyp formasie waargeneem was het die V-vormige donga kanale en SAR data van die tradisionele nat analise aangedui dat afloop die dominante vorming proses was. Daar was gevind dat 'n duo van faktore, wat bestaan uit een menslike en een natuurlike faktor onderskeidelik, die faktore was wat donga ontwikkeling in die area dryf. 'n Unieke menslike faktor wat nog nie vantevore gepubliseer is, was bevind as die menslike faktor wat aanleiding gee tot donga erosie. Hierdie faktor is die bewerkiingsmetode wat in die Sandspruit opvangsgebied gebruik word naamlik geploegde kontoerbewerking. Die geploegde kontoere tree op as kanale om eerstens water te versamel en tweedens om die vloeirigting daarvan te wysig. Water wat onder natuurlike toestande afwaarts sou dreineer tot in die vallei word vasgevang deur die kontoere en gekanaliseer na een invloei punt in die donga. Hierdie proses verhoog die erosiekrag van die water aangesien groter volumes by 'n enkele punt in die steiler bolope van die donga stelsel invloei. Die dryf faktor in die natuurlike groep was swak grond struktuur. Die oorsaak hiervan was die besetting van ‘n grootmaat uitruilbare Mg2+ katione op die uitruil plekke van die kleifraksie. Dit sou veroorsaak dat grond in die teenwoordigheid van water maklik sou dispergeer, selfs in die teenwoordigheid van 'n lae hoeveelheid uitruilbare Na+ katione. Metodes om donga erosie te bekamp sal dienooreenkomstig bestaan uit die herstel van die grondstruktuur en die toepassing van 'n alternatiewe gondbewerkings stelsel. Die aanplanting van plantegroei, veral gras en koring binne die donga kanale sal verder help met die veg tot bekamping Die tweede doel van hierdie projek was om te bepaal indien naby infrarooi (NIR) spektrometrie (met golfnommer van 12 500 – 4 000cm-1) oor die vermoë beskik om aanwysers wat traditioneel in grondkunde gebruik word om die dispergering van grond te meet te voorspel. Hierdie aanwysers sluit vyf indekse in naamlik die Veranderlike Natrium Persentasie (ESP), Natrium Absorpsie Verhouding (SAR), Magnesium Versadiging Persentasie (MS%), Elektriese Geleidingsvermoë (EC) en die Potensiële Waterstof (pH) sowel as die vier hoof uitruilbare katione naamlik kalsium (Ca2+) , kalium (K+), natrium (Na+) en magnesium (Mg2+). Oppervlak en ondergrondse grondmonsters is ingesamel by die punt van oorsprong by aktiewe dongas. Hierdie monsters is minimaal voorberei, dus slegs gedroog, gemaal en gesif. Daarna was dit onderworpe aan die NIR analise. Die Bruker meerdoelige FT-NIR Analiseerder (MPA; Bruker Optik GmbH, Duitsland) met 'n spektrale omvang van 12 500cm 1 4000cm-1 is hiervoor gebruik. Parsiële kleinste kwadraat regressie (PLSR) modelle is gebou vir elke indeks asook die uitruilbare katione deur gebruik te maak van die nutsprogram Quant 2 van die OPUS 6.5 (MPA; Bruker Optik GmbH, Duitsland) sagteware. Vyf verskillende regressie statistieke naamlik die bepalingskoëffisiënt (r2), vierkantswortel fout tydens kruis validasie (RMSECV), verhouding van prestasie teenoor voorspellingsafwyking (RPD), sydigheid en die verhouding van prestasie van kwartiele (RPIQ) was gebruik om die geldighied van elke PLSR model te asseseer. Alle PLSR modelle het goed presteer, behalwe vir MS% wat verdere navorsing vereis. NIR beskik dus oor die vermoë om die aard van dispergering van grond te bepaal op 'n vinnige, betroubare, goedkoop en nie afbrekende manier. Dit kan dus effektief aangewend word as ‘n substitusie vir die traditionele metodes om te bepaal as grond a beduidende faktor is of nie.

Thesis (MSc)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: Despite recorded mountain wave related aircraft accidents in South Africa, very little literature exists on South African mountain waves. This study discusses the results of a mountain wave study in the Hex River Mountains in the Western Cape province of South Africa. The aim of this study was to measure mountain wave turbulence on the lee side of the mountains by conducting weather balloon soundings on the upwind and lee sides of the mountains. These soundings were performed over four days in the winter and spring, with each field day representing different synoptic scale weather conditions. Lee wave rotors were detected from several of the lee wave soundings. Significant values of horizontal vorticity around a north-south axis (y-component horizontal vorticity) were detected. The instrumentation was highly sensitive and able to measure even weak up and downdraft velocities associated with the rotors. Strong downdrafts were measured some mountain waves, but no strong downdrafts were detected near rotors which occurred below the mountain waves. The two dimensional positions of balloons were only available after a considerable amount of reanalysis. If this data can be made available onsite shortly after soundings, it can be used to decide where to move launch sites to, in order to obtain optimal results.<br>AFRIKAANSE OPSOMMING: Ten spyte van gedokumenteerde berggolf-verwante vliegongelukke, bestaan baie min literatuur oor Suid Afrikaanse berggolwe. Hierdie tesis bespreek die resultate van ‘n berggolfstudie in die Hexrivier Berge in the Weskaap Provinsie van Suid- Afrika. Die doel van hierdie studie was om die berggolfturbulensie aan die lykant van die berge te meet deur middel van weerballonopstygings aan beide die winden lykante van die berge. Hierdie opstygings is oor ‘n tydperk van vier winter en lente dae uitgevoer, met elkeen van die dae wat verskillende sinoptiese weersomstandighede verteenwoordig het. Rotors is waargeneem in die data van verskeie ballonopstygings wat aan die lykant uitgevoer is. Beduidende waardes van horisontale vortisiteit rondom ‘n noord-suid as (y-komponent horisontale vortisiteit) is gemeet. Die instrumentasie was hoogs sensitief en kon selfs swak op- en afstrominge meet. Sterk afstrominge is waargeneem in berggolwe, maar nie in die omgewing van rotors wat onmder die berggolwe voorgekom het nie. Die twee-dimensionele posisies van ballonne was slegs na aansienlike heranaliese van die data beskikbaar. Indien hierdie data kort na opstygings beskikbaar is tydens veldwerk, kan dit help met besluite oor alternatiewe posisies waarvandaan ballonopstygings gedoen kan word ten einde optimale resultate te bekom.

Thesis (MA (Geography and Environmental Studies))--University of Stellenbosch, 2007.<br>The Western Cape province of South Africa is a water scarce area with a Mediterranean climate. The majority of rainfall occurs in the cold winter months and the area experiences hot and dry summers. Studies done to investigate various water supply and water demand management options for the City of Cape Town, concluded that the Table Mountain Group (TMG) aquifer has the potential of yielding high volumes (estimated at 70Mm3/a) of good quality water, but that further research about this source as a potential augmentation supply to the City of Cape Town was necessary before extraction could commence. The aim of the study is to develop a spatial decision support system (SDSS) to be used by a hydrogeology project team, which includes hydrogeologists, environmentalists, ecologists, engineers and other stakeholders. The Table Mountain Group Aquifer (TMGA) SDSS is meant to be a decision support tool, but should also raise awareness about the use of spatial data and information and its capabilities for earth science and other multidisciplinary applications. By means of team discussions and interviews data, spatial analysis and data manipulation requirements were determined. Based on these requirements, four spatial analysis tools were developed. The spatial tool named “Borehole Analysis” analyses stratigraphic information obtained from existing boreholes and hydrogeological point data. The tool determines what groundwater use and monitoring has been undertaken in the area of interest. The “Topographic Analysis” tool identifies any topographical (e.g. rivers) and cadastral (e.g. farm boundaries) data within a certain distance from a possible borehole site. The “Sensitive Area Analysis” tool addresses queries with respect to sensitive areas, such as wetlands, statutory protected areas and private nature reserves. The “Image Classification” tool gives the team members an opportunity to use band ratios during image interpretation. The TMGA SDSS was developed using TNTmips v70, Extensible Markup Language (XML) and Spatial Manipulation Language (SML) and can be run on TNTAtlas v70, which is a free software. The TMGA SDSS enables the team members to have equal and ready access to data acquired by other members. This was found to support intra- and interdisciplinary conversation and facilitate understanding of how the data is being (or could be) used. It also contributes to levels of confidence in decision-making and supports a holistic approach to project design and implementation. Keywords: decision-making, geographic information system (GIS), spatial decision support systems (SDSS), spatial manipulation language (SML)

Thesis (MA)--Stellenbosch University, 2000.<br>ENGLISH ABSTRACT: European cities offer a variety of attractions, activities and facilities to tourists. One component of tourism in this urban context is cultural tourism which is a high potential growth sector within the tourism industry. Cultural tourists travel to cities mainly to see the most important and well known cultural attractions, to take part in cultural festivities, to view the cultural treasures of the cities and to attend performances and exhibitions. Other functions and activities such as retail functions and types also occur in the vicinity of the important cultural attractions of a city. Amongst these activities and functions are shops, cafés and restaurants. In an area of a city where cultural attractions and retail types coexist, the possibility exits that a spatial relationship between cultural tourism and retailing may occur in the sense that the tourists who visit these attractions may support the retail establishments in the vicinity of cultural attractions. The city of Leuven in Belgium is a typical West European city with a variety of cultural tourist attractions as well as functions which can be supportive of cultural tourism. These functions include shops, cafés and restaurants. An investigation was conducted to establish whether a spatial relationship exists between cultural tourism and retail activities in the part of Leuven known as the Ring. The geographical information systems TransCad, Arc/Info en ArcView were used for the processing and analysis of retail and cultural tourism data gathered in the Ring of Leuven. Three analytical procedures were performed separately for shops, cafés and restaurants. These procedures comprised (a) the determination of the numbers and types of supportive functions around the most important cultural-historical tourist attractions, (b) the determination of the numbers and types of supportive functions along the routes to cultural-historical sites from tourist points of origin, and (c) the determination of the numbers and types of supportive functions along guided-walk routes in the city. The analysis results show that a (spatial) relationship does exist between retail and cultural tourism in the Ring of Leuven. On average 44% of the retail functions (shops, cafés and restaurants) are located within a distance of up to saam from the six most important cultural building attractions in Leuven (procedure 1). Retail functions on guided-walk routes totalled 48% with cafés and restaurants being the most abundant (procedure 3). Only 19% of retail functions are located between points of origin and cultural building attractions (procedure 2). A more detailed study should be conducted to establish the exact nature of the spatial relationship which exists between retail and cultural tourism in the Ring of Leuven.<br>AFRIKAANSE OPSOMMING: Europese stede bied 'n reeks attraksies, aktiwiteite en fasiliteite vir toeriste. Een komponent van die breër term toerisme in hierdie stedelike konteks is kulturele toerisme wat 'n baie sterk groeisektor binne die toerismemark is. Kulturele toeriste besoek stede hoofsaaklik met die doelom die belangrikste en bekendste kulturele attraksies te besigtig, om aan kulturele feeste deel te neem, die kunsskatte van stede te betrag en om teateropvoerings en tentoonstellings by te woon. In die nabyheid van die belangrikste kulturele attraksies van 'n stad kom ook ander funksies en aktiwiteite soos kleinhandelsfunksies en -tipes voor. Hieronder ressorteer onder andere winkels, cafés en restaurante. In die gedeelte van 'n stad waar kulturele attraksies en kleinhandelstipes naby mekaar voorkom, kan die moontlikheid bestaan van 'n ruimtelike verwantskap tussen kulturele toerisme en kleinhandel, in dié sin dat toeriste wat die attraksies besoek, moontlik ook die kleinhandelstipes wat in die nabyheid van die kulturele attraksies voorkom, salondersteun. Die stad Leuven in België is 'n tipiese voorbeeld van 'n Wes-Europese stad met 'n verskeidenheid kulturele toeriste-attraksies asook funksies wat kulturele toerisme ondersteun. Hierdie ondersteunende funksies sluit winkels, cafés en restaurante in. In die deel van Leuven wat as die Ring bekend staan, is ondersoek ingestel na die voorkoms, al dan nie, van 'n ruimtelike verwantskap tussen kulturele toerisme en kleinhandel. Die geografiese inligtingstelsels TransCad, Arc/Info en ArcView is ingespan vir die verwerking en analise van data oor kleinhandel en kulturele toerisme in die Ring van Leuven. Drie ontledingsprosedures is afsonderlk uitgevoer vir winkels, cafés en restaurante. Hierdie prosedures behels (a) die bepaling van die aantal en tipes ondersteunende funksies rondom die belangrikste kultuurhistoriese toeristeattraksies; (b) die bepaling van die aantal en tipe ondersteunende funksies langs die roetes tussen die toeriste-oorsprongpunte en die belangrikste kultuurhistoriese toeriste-attraksies; en (c) die bepaling van die aantal en tipe ondersteunende funksies langs begeleide stadswandelroetes. Die analiseresultate wys dat 'n verwantskap tussen kleinhandel en kulturele toerisme, ruimtelik-gesproke, wel in die Ring van Leuven bestaan. Só is gemiddeld 44% van die kleinhandelsfunksies (winkels, cafés en restaurante) tot op In afstand van SOOmvanaf die ses belangrikste kulturele gebou-attraksies in Leuven geleë (prosedure 1). Ook kom 48% van die kleinhandelsfunksies langs die roetes van begeleide stadswandelinge voor. Hier is dit egter die cafés en restaurante wat die grootste proporsies uitmaak (prosedure 3). 'n Gemiddelde proporsie van slegs 19% van die kleinhandelsfunksies kom tussen oorsprongpunte en die belangrikste kulturele gebou-attraksies voor. 'n Meer omvattende studie moet onderneem word om vas te stel watter tipe ruimtelike verwantskap tussen kleinhandel en kulturele toerisme binne Leuven se Ring voorkom.

Thesis (MA)--University of Stellenbosch, 2004.<br>ENGLISH ABSTRACT: Recently there has been growing interest in evaluating the performance and outcomes of spatial planning policies worldwide. In response to this a research was carried out to evaluate and monitor the effectiveness of spatial planning policies in the Cape Metropolitan Area (CMA). The Planning Indicators Model (PIM), which consists of a set of twenty-six indicators, was applied to monitor and measure the extent to which the Metropolitan Spatial Development Framework (MSDF) has affected land use and physical development in the CMA. To achieve the aim of the study, the research was divided into three phases. The first phase involved a literature review, the second phase involved interviews with planning officials and lastly, the collection of different thematic datasets required to run the Planning Indicators Model. The data sets were used to monitor and display spatiotemporal variations in conformance and performance indices in the form of maps. These maps were used to identify areas where strengths can be protected and where weaknesses need to be corrected. From a set of 26 indicators used for this study only two indicators monitored conformances (Growth of informal housing townships) over the period 1993 – 1998; the others simply indicated the present conditions. This means that the rest of the indicators did not show trends. However, the data are presented in this report as a useful baseline for future conformance and performance monitoring exercises. The study also revealed that for the past twelve years the MSDF has been the subject of extensive debate within the local authorities. Also several indicators seem to overlap and need to be clearly defined, thus it is recommended that some of these indicators should be combined to avoid duplication and confusion. Generally, the PIM can assist in making the impact of spatial planning greater in the CMA.<br>AFRIKAANSE OPSOMMING: Onlangs is daar wêreldwyd groeiende belangstelling in die prestasies en uitkomstes van ruimtelike beplannings- beleide. In reaksie daarop is hierdie navorsing gedoen om die doeltreffendheid van die ruimtelike beplannings- beleide van die Kaapse Metropolitaanse Gebied (KMG) te evalueer en te monitor. Die Beplannings Aanwysers Model (BAM) wat bestaan uit ‘n stel van ses-en- twintig aanwysers, is aangewend om te meet tot hoeverre die Metropolitaanse Ruimtelike Ontwikkelings Raamwerk grondgebruik en fisiese ontwikkeling in die Kaapse Metropolitaanse Gebied beïnvloed het. Om die doelwit van hierdie studie te verwesenlik, is die navorsing gedoen in drie fases. Die eerste fase bestaan uit ‘n oorsig van die literatuur en die tweede fase uit onderhoude met amptenare verantwoordelik vir beplanning. Die laaste fase beslaan die versameling van die verskillende tematiese stelle data wat benodig word vir die Beplannings Aanwysers Model. Die stelle data is gebruik om die ruimtelike- en tydsvariasies in die konformering- en prestasie indekse te monitor en ten toon te stel in die vorm van kaarte. Hierdie kaarte is gebruik om die gebiede te identifiseer waar sterkpunte behoue moet bly en waar swakpunte reggestel moet word. Uit die stel van 26 aanwysers wat gebruik is vir hierdie studie, het net twee aanwysers konformering (Die groei van dorpsgebiede met informele behuising) gedurende die periode 1993 – 1998 gemonitor; die ander het eenvoudig die huidige toestand aangetoon. Dit beteken dat die ander aanwysers nie tendense aangetoon het nie. Die data word egter in hierdie verslag weergee as ‘n nuttige basis vir die toekomstige monitor van konformering en prestasie. Die studie toon ook aan dat daar gedurende die afgelope twaalf jaar baie deur plaaslike owerhede gedebatteer is oor die Metropolitaanse Ruimtelike Ontwikkelings Raamwerk. Ook oorvleuel sommige van die aanwysers en moet hulle meer duidelik omskryf word. Dus word daar aanbeveel dat sommige van die aanwysers gekombineer moet word om duplikasie en verwarring te voorkom. Oor die algemeen kan die Beplanning Aanwysers Model help om die impak van ruimtelike beplanning op die Kaapse Metropolitaanse Gebied te bevorder.

Thesis (MSc)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: The Western Cape Province in South Africa is home to one of the most diverse plant communities in the world, and has one of the highest concentrations of plants species in any temperate ecosystem in the world. The dominant vegetation is both fire-prone and fire-dependant (Van Wilgen & Scott 2001, Forsyth et al. 2010). The Western Cape in particular is emerging as a province that is increasingly prone to disaster events, particularly the threat of veld fires. The consequences of large wildfire disaster events are often devastating and far reaching (Van Wilgen & Scott 2001, Forsyth et al. 2010). This study was conducted in an attempt to investigate the drivers of wildfire behaviour, severity and magnitude in the Limietberg Conservation Area in order to gain a greater insight and understanding of the complexity of wildfire risk. Recognising the disaster prone character of the Western Cape and the increasing probabilities of future wildfire events in the province, this study aimed to strengthen the understanding of the drivers of wildland fire behaviour (i.e. wildland fire risk) in the Limietberg Conservation Area by analysing a number of fires to identify a range of drivers and patterns; examining the factors driving both fire danger and fire behaviour, including climate, topography, slope and fuel; examining the factors driving fire frequency and regime; and finally, determining possible ecological damage caused by the last 10 – 20 years of wildfire events in the Limietberg Conservation Area as measured by post-fire seedling ratios. This was achieved through the use of statistical techniques including multiple regression (McDonald 2009), ordination in the form of principal component analysis and non-metric multi-dimensional scaling (Clarke & Warwick 1994), and fieldwork in the form of post-fire regeneration (Proteaceae parent:seedling ratio) monitoring techniques (Bond et al. 1984; Vlok & Yeaton 2000; De Klerk et al. 2007). The results indicated that the interactions between factors driving fire danger and fire behaviour were indeed complex, being influenced mainly by meteorological variables (temperature, relative humidity, wind speed) but also quite strongly influenced by physical environmental factors (slope, topography). The use of ordination techniques in this sort of complex analysis was seen as extremely effective and its use in further fire research was strongly recommended.<br>AFRIKAANSE OPSOMMING: Die Wes-Kaap provinsie in Suid-Afrika is die tuiste van een van die mees diverse plant gemeenskappe in die wêreld, en het een van die hoogste konsentrasies van plantspesies in enige gematigde ekosisteem in die wêreld. Die dominante plantegroei is beide vuur geneig en vuurafhanklik (Van Wilgen & Scott 2001, Forsyth et al. 2010). Die Wes-Kaap in die besonder is opkomende as 'n provinsie wat toenemend geneig is tot ramp gebeure, veral die bedreiging van veldbrande. Die gevolge van groot veldbrand rampgebeure is dikwels verwoestend en verreikend (Van Wilgen & Scott 2001, Forsyth et al. 2010). Hierdie studie is uitgevoer in 'n poging om die oorsake van veldbrande, die gedrag, erns en omvang daarvan in die Limietberg Bewaringsgebied vir groter insig en begrip van die kompleksiteit van veldbrand risiko te ondersoek. Hierdie studie erken die rampgeneigdheid van die Wes-Kaap en die toenemende waarskynlikheid van toekomstige veldbrande in die provinsie. Dit het ten doel gehad om die oorsake van veldvuur gedrag (bv. brand risiko) in die Limietberg Bewaringsgebied deur die ontleding van 'n aantal brande se oorsake en patrone te identifiseer; die ondersoek van faktore wat beide brandgevaar en vuurgedrag, bepaal insluitend klimaat, topografie, helling en brandstof; die ondersoek van faktore wat vuur frekwensie en regime; en uiteindelik die bepaling van moontlike ekologiese skade veroorsaak deur die laaste 10 - 20 jaar van veldbrand gebeure in die Limietberg Bewaringsgebied, soos gemeet deur navuur saailing verhoudings. Die doel is bereik deur die gebruik van statistiese tegnieke waaronder meervoudige regressie (McDonald 2009), ordening in die vorm van hoofkomponent analise en multi-dimensionele skaling (Clarke & Warwick 1994), en veldwerk in die vorm van navuur herlewing (Proteaceae ouer:saailing verhouding) moniteringstegnieke (Bond et al. 1984; Vlok & Yeaton 2000; De Klerk et al. 2007). Die resultate dui daarop dat die interaksies tussen faktore wat brandgevaar en vuurgedrag inderdaad kompleks aandryf is en hoofsaaklik beïnvloed word deur meteorologiese veranderlikes (temperatuur, relatiewe humiditeit, windspoed), maar ook baie sterk beïnvloed word deur fisiese omgewingsfaktore (helling, topografie). Die gebruik van ordeningstegnieke vir hierdie komplekse tipe analise is bevind as uiters effektief en die gebruik daarvan in verdere vuur navorsing word sterk aanbeveel.

Thesis (MSc)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: Current efforts to address Zimbabwe‘s decade long veld fire crisis has partly been hindered by a lack of financial resources and fire data. This study illustrates the potential of using the MODIS burned area product as an alternative cost- and time-effective method for reconstructing historical fire records in Zimbabwe. Two MODIS burned area products were evaluated, namely the MCD45A1 and WAMIS (Meraka Institute‘s MODIS burned area product). Both products yielded similar levels of accuracy despite the difference in algorithms. However, it is assumed that at certain thresholds, either in tree cover or fire intensity, WAMIS ceases to map fires as accurately as the MCD45A1. Ten years of fire data for Charara Safari Area (CSA) was extracted from the MCD45A1, and used as a basis to establish six parameters: fire incidence, extent, seasonality, fire size, frequency and fire return interval (FRI). It was observed that approximately 50% of CSA burned annually, with an average of 132 fires occurring every year. Although there was no overall increase or decrease in the extent of area burned over the 10 year study period, an increasing trend in fire incidence was noted. Through an assessment of effective fire size, it was established that more fires in CSA were gradually becoming smaller in size, while the extent of area burned remained fairly constant. Hence, the increase in fire incidences and lack of a corresponding increase in area burned. This study was also used to identify areas in the fire regime that may be a potential ecological risk to the miombo woodland in CSA. Three points of concern were revealed: firstly, a high prevalence of late season fires was observed in the northern bounds of CSA. Secondly, 64.2% of the total area burned in CSA burned between 6 and 10 times over the 10 year period, and lastly, 85% of the total area burned over the period 2001 and 2010 had a FRI of less than 2 years. The combination of late season fires, high fire frequency and short FRI in CSA is indicative of possible alterations in the state of the miombo woodlands, which may have negative socio-economic implications on CSA and its surrounding communities. This study has demonstrated that the MCD45A1 is a useful source of much needed fire information for Zimbabwe. Therefore, the possibility of integrating methods employed in this study into the current collection of fire data should be given due consideration.<br>AFRIKAANSE OPSOMMING: Huidige pogings om Zimbabwe se dekade lank veldbrand krisis aan te spreek is gedeeltelik belemmer deur 'n gebrek aan finansiële hulpbronne en vuurdata. Hierdie studie illustreer die potensiaal van die gebruik van die MODIS verbrande area produk as 'n alternatiewe koste-en tyd-effektiewe metode vir die rekonstruksie van historiese vuurrekords in Zimbabwe. Twee MODIS verbrande area produkte is geëvalueer, naamlik die MCD45A1 en WAMIS (Meraka Instituut se MODIS verbrand area produk). Beide produkte het soortgelyke vlakke van akkuraatheid opgelewer ten spyte van die verskil in die algoritmes. Dit word egter aanvaar dat op sekere drempels, óf in die boom bedekking, of brandintensiteit, WAMIS brande minder akkuraat karteer as die MCD45A1 produk. Tien jaar van vuurdata vir Charara Safari Area (CSA) is uit die MCD45A1 data onttrek, en gebruik as 'n basis om ses parameters vas te stel: vuurvoorkoms, omvang, seisoenaliteit, vuurgrootte, frekwensie en tyd tussen die terugkeer van vuur na ‗n spesifieke plek (nl. FRI). Dit is waargeneem dat ongeveer 50% van die CSA jaarliks gebrand word, met 'n gemiddeld van 132 brande wat elke jaar voorkom. Daar was nie 'n algehele toename of afname in die omvang van die totale verbrande area oor die 10 jaar studietydperk nie. Maar 'n toenemende neiging in die vuurvoorkoms was wel opgemerk. Deur middel van 'n assessering van effektiewe vuurgrootte, is daar vasgestel dat meer kleiner brande in CSA voorkom, terwyl die omvang van die verbrand area redelik konstant gebly het. Dus was daar ‗n toename in die aantal vuurvoorvalle al was daar nie 'n ooreenstemmende toename in die totale verbrande oppervlakte was nie. Hierdie studie is ook gebruik om gebiede in die vuurregime te identifiseer wat 'n potensiële ekologiese risiko vir die miombobosveld in CSA inhou. Drie punte van kommer word geopenbaar: eerstens, 'n hoë voorkoms van laatseisoen brande is waargeneem in die noordelike grense van CSA. Tweedens, 64,2% van die totale verbrande oppervlakte in die CSA brand tussen 6 en 10 keer bine die 10-jaar periode. Laastens, 85% van die totale verbrande oppervlakte oor die tydperk 2001 tot 2010 het 'n FRI van minder as twee jaar. Die kombinasie van laatseisoen brande, hoë vuurfrekwensie en kort FRI in CSA is 'n aanduiding van moontlike veranderinge in die toestand van die miomboveld, wat negatiewe sosio-ekonomiese implikasies op die CSA en die omliggende gemeenskappe kan uitoefen. Hierdie studie het getoon dat die MCD45A1 'n nuttige bron van broodnodige vuur inligting vir Zimbabwe is. Daarom, moet die moontlikheid van die integrasie van die metodes wat gebruik word in hierdie studie in die huidige versameling van vuurdata behoorlike oorweging gegee word.

Thesis (MSc (Geography and Environmental Studies))--University of Stellenbosch, 2006.<br>A multitude of unique fauna and flora exist within the Western Cape of South Africa. Fire plays an intricate role in the conservation and extinction of many of these species. It is therefore imperative to understand this delicate relationship in order to help preserve the province’s uniquely balanced ecosystem. The Western Cape Nature Conservation Board (WCNCB) expressed the need for a system that would allow reserve managers to produce basic fire frequency and veld age maps with considerable ease. These maps are needed for intelligent decisionmaking regarding the management of veldfires. Information concerning vegetation and historical veldfires in the Western Cape, collected over a period of 50 years exist in tabular format in databases of the WCNCB. Some of these tables contain spatial information elements, such as areas affected by fires. Tabular data with spatial elements can be converted to a geographical information system (GIS) format, extracting value previously shielded from the user. Using GIS techniques and the programming language Avenue, two tools with powerful decision-making qualities were created to extract value from these datasets. One tool shows the fire history of a specified area as a digital map. This map shows areas with varying occurrences of fires over time, thereby highlighting hot spots within the specified location. The ability to view various fire scar datasets spatially over a specified period, as opposed to records in a table, enables the user to understand the extent to which areas have been repeatedly exposed to fire and quickly identify areas most affected. The second tool shows vegetation age in a similar fashion, allowing the user to see the current spatial distribution of vegetation and its age. Knowledge about the age of indigenous vegetation, such as fynbos, in a predetermined area, facilitates the reserve manager in decisions related to block burning. This is an accepted practise in areas where vegetation requires fire to stimulate germination. Both tools provide decisionmaking support to reserve managers regarding the most suitable course of action in terms of the implementation of a proactive or passive approach towards fires. This study satisfies the needs of the WCNCB by exploring the hidden value within their datasets. GIS supported by the programming language, Avenue, was successfully utilised in the development of a system capable of extracting information from current datasets to support reserve managers in their critical decision-making processes.

Thesis (MA)--University of Stellenbosch, 2002.<br>ENGLISH ABSTRACT: A major concern for Energex, Australia's largest energy utility in South East Queensland, is the escape of natural gas out of their reticulation systems. Within many of the older areas in Brisbane, these networks operate primarily at low and medium pressure with a significant percentage of mains being cast iron or steel. Over many years pipes in these networks have been replaced, yet reports show that unaccounted for gas from the same networks remain high. Furthermore, operation and maintenance budgets for these networks are high with many of these pipes close to the end of their economic life. When operation and maintenance costs exceed the costs of replacement, the Energex gas utility initiates projects to renew reticulation networks with polyethylene pipes. Making decisions about pipe renewal requires an evaluation of historical records from a number of sources, namely: • gas consumption figures, • history of leaks, • maintenance and other related cost, and • the loss of revenue contributed by unaccounted for gas. Financial justification of capital expenditure has always been a requirement for renewal projects at the Energex gas utility, however the impact of a deregulation in the energy utility market has necessitated a review of their financial assessment for capital projects. The Energex gas utility has developed an application that evaluates the financial viability of renewal projects. This research will demonstrate the role of GIS integration with the Energex financial application. The results of this study showed that a GIS integrated renewal planning approach incorporates significant benefits including: • Efficient selection of a sub-network based on pipe connectivity, • Discovery of hidden relationships between spatially enabled alphanumeric data and environmental information that improves decision making, and • Enhanced testing of proposed renewal design options by scrutinizing the attributes of spatial data.<br>AFRIKAANSE OPSOMMING: 'n Groot bron van kommer vir Energex, Australië se grootste energieverskaffer in Suidoos- Queensland, is die verlies van natuurlike gas uit hul gasdistribusie netwerke. In 'n groot deel van ouer Brisbane opereer hierdie netwerke hoofsaaklik teen lae en medium druk, met 'n aansienlike persentasie van hoofpyplyne wat uit gietyster of staal bestaan. Al is sommige pyplyne in hierdie netwerke met verloop van tyd vervang, maak verslae dit duidelik dat 'n groot deel van die gas in hierdie netwerke steeds langs die pad verlore gaan. Die operasionele - en onderhoudsbegrotings vir hierdie netwerke is boonop hoog, met 'n groot persentasie van die pyplyne wat binnekort aan die einde van hulle ekonomiese leeftyd kom. Wanneer operasionele- en onderhoudsonkostes die koste van vervanging oorskry, beplan Energex se gasvoorsienings-afdeling projekte om verspreidingsnetwerke te hernu met poli-etileen pype. Om sinvolle besluite te neem tydens pyplynhernuwings, word verskeie historiese verslae geraadpleeg, insluitend: gasverbruikvlakke, lekplek geskiedenis rekords, onderhoud- en ander verwante onkostes, asook die verlies van inkomste weens verlore gas. Alhoewel finansiële stawing van kapitale uitgawes nog altyd 'n voorvereiste was tydens hernuwingsprojekte by Energex, het die impak van privatisering op die energieverskaffingsmark dit noodsaaklik gemaak om hulle finansiële goedkeuringsproses vir kapitaalprojekte te hersien. Energex het dus 'n sagteware toepassing ontwikkel wat die finansiële gangbaarheid van hernuwingsprojekte evalueer. Hierdie navorsing sal die moontlike integrasie van geografiese inligtingstelsels (GIS) met dié van Energex se finansiële evalueringspakket demonstreer. Die resultate van hierdie studie toon dat die integrasie van GIS in die hernuwingsproses aansienlike voordele inhou, insluitende: • die effektiewe seleksie van sub-netwerke, gebaseer op pyp konnektiwiteit, • die ontdekking van verskuilde verwantskappe tussen geografies-ruimtelike alfanumeriese data en omgewingsinligting, wat besluitneming vergemaklik, en • verbeterde toetsing van voorgestelde hernuwingsopsies deur die indiepte-nagaan van geografiesruimtelike elemente.

ENGLISH ABSTRACT: Biodiversity refers to the variety of life on earth at all scales of observation. Its persistence underlies ecological and evolutionary processes and is pivotal for the sustenance and future development of human societies through the provision of ecosystem services. Especially since the industrial revolution, anthropogenic land-cover change has placed ever-increasing strain on natural systems through the destruction and degradation of habitat. The Cape Floristic Region (CFR) is a global biodiversity hot spot which contains some of the highest levels of floristic diversity and endemism on the planet. Since European settlement large swathes of this region have been transformed to facilitate socio-economic development, placing tremendous pressure on indigenous biodiversity. Due to the intimate relationship that exists between land cover and biodiversity it is possible to draw inferences on the current state of the biodiversity of an area, assess the pressures that will likely face it in the future and plan accordingly based on an analysis of land-cover change. As a means of assessing the state of biodiversity in the CFR, this thesis has developed a series of three land-cover maps for the Berg River catchment in the Western Cape province for 1986/1987, 1999/2000 and 2007 using Landsat TM and ETM+ data. Areas of natural vegetation were delineated on the land-cover maps using an object-orientated nearest neighbour supervised classification. Remnants of natural vegetation were classified according to potential vegetation boundaries described by Mucina and Rutherford’s map of the vegetation of South Africa, Lesotho and Swaziland. Contrary to initial expectations, the area occupied by natural vegetation had increased by 14%. However, considerable variation was recorded between vegetation types with certain types exhibiting marked increases in extent while others had been encroached by expanding cultivated and urban areas. An assessment of the accuracy of the 2007 land-cover map showed that significant swathes of natural vegetation were infested with alien invasive species or dominated by particularly resilient species which are not as severely affected by anthropogenic activities as other species. It is concluded that the methodology employed in this study provides a scoping mechanism by which more intensive research may be directed toward areas exhibiting significant land-cover change.<br>AFRIKAANSE OPSOMMING: Biodiversiteit verwys na die verskeidenheid lewe op aarde op alle waarnemingsvlakke. Die volhouding daarvan onderlê ekologiese en ewolusionêre prosesse en die verskaffing van ekosisteemdienste is deurslaggewend vir die onderhoud en toekomstige ontwikkeling van menslike samelewings deur. Veral sedert die industriële rewolusie het veranderinge in antropologiese gronddekking toenemende druk op natuurlike sisteme geplaas, grootliks deur die vernietiging en ontaarding van habitatte. Die Kaapse Floristiese Streek (KFS) met van die hoogste vlakke van floristiese diversiteit en endemisiteit op aarde, is ‘n brandpunt van wêreldwye biodiversiteit. Sedert die vestiging van Europese setlaars is uitgebreide dele van hierdie streek omskep om sosio-ekonomiese ontwikkeling te bevorder, wat geweldige druk op inheemse biodiversiteit geplaas het. Te wyte aan die intieme verhouding wat tussen gronddekking en biodiversiteit bestaan, is dit moontlik om deur middel van ‘n ontleding van gronddekkingsveranderinge afleidings te maak rakende die huidige stand van biodiversiteit in ‘n streek. Sodoende kan bepaal word watter druk ʼn streek moontlik in die toekoms sal moet weerstaan. Vooruitbeplanning kan dienooreenkomstig gedoen word. Ten einde die stand van biodiversiteit in die KFS te beraam, het hierdie tesis ‘n reeks van drie gronddekkingskaarte (1986/1987, 1999/2000 en 2007) vir die Bergrivier-opvangsgebied in die Wes-Kaapprovinsie met behulp van Landsat TM en ETM+ data ontwikkel. Areas met natuurlike plantegroei is met behulp van ‘n voorwerp-georiënteerde naaste-buurman klassifikasie afgebaken. Oorblyfsels van natuurlike plantegroei is volgens potensiële plantegroeigrense, soos beskryf deur Mucina en Rutherford se kaart van die plantegroei van Suid-Afrika, Lesotho en Swaziland, geklassifiseer. In teenstelling met aanvanklike verwagtinge, het die area wat deur natuurlike plantegroei bedek word met 14% toegeneem. Tog is aansienlike variasie tussen plantegroeitipes opgemerk, met sekere soorte wat opvallende omvangstoename toon, terwyl ander plantegroeitipes deur landbou en stedelike groei vervang is. ‘n Beraming van die akkuraatheid van die 2007-gronddekkingkaart toon dat noemenswaardige stroke natuurlike plantegroei deur uitheemse indringerspesies besmet word of deur uiters weerstandige spesies, wat nie so ernstig as ander spesies deur antropologiese aktiwiteite beïnvloed word nie, gedomineer word. Die gevolgtrekking is dat die metodologie wat in hierdie studie gebruik is ‘n meganisme verskaf waardeur meer intensiewe navorsing op areas wat aansienlike verandering in gronddekking ten toon stel, gerig kan word.

Thesis (MSc)--Stellenbosch University, 2013.<br>Landslide susceptibility maps are important for development planning and disaster management. The current synthesis of landslide susceptibility maps largely applies GIS and remote sensing techniques. One of the most critical stages on landslide susceptibility mapping is the selection of landslide causative factors and weighting of the selected causative factors, in accordance to their influence to slope instability. GIS is ideal when deriving static factors i.e. slope and aspect and most importantly in the synthesis of landslide susceptibility maps. The integration of landslide causative thematic maps requires the selection of the weighting method; in order to weight the causative thematic maps in accordance to their influence to slope instability. Landslide susceptibility mapping is based on the assumption that future landslides will occur under similar circumstances as historic landslides. The weight of evidence method is ideal for landslide susceptibility mapping, as it calculates the weights of the causative thematic maps using known landslides points. This method was applied in an area within the Western Cape province of South Africa, the area is known to be highly susceptible to landslide occurrences. A prediction rate of 80.37% was achieved. The map combination approach was also applied and achieved a prediction rate of 50.98%. Satellite remote sensing techniques can be used to derive the thematic information needed to synthesize landslide susceptibility maps and to monitor the variable parameters influencing landslide susceptibility. Satellite remote sensing techniques can contribute to landslide investigation at three distinct phases namely: (1) detection and classification of landslides (2) monitoring landslide movement and identification of conditions leading up to an event (3) analysis and prediction of slope failures. Various sources of remote sensing data can contribute to these phases. Although the detection and classification of landslides through the remote sensing techniques is important to define landslide controlling parameters, the ideal is to use remote sensing data for monitoring of areas susceptible to landslide occurrence in an effort to provide an early warning. In this regard, optical remote sensing data was used successfully to monitor the variable conditions (vegetation health and productivity) that make an area susceptible to landslide occurrence.

Thesis (MSc (Geography and Environmental Studies))--Stellenbosch University, 2008.<br>Accelerating urban growth places increasing pressure not only on the efficiency of infrastructure and service provision, but also on the natural environment. City managers are delegated the task of identifying problem areas that arise from this phenomenon and planning the strategies with which to alleviate them. It is with this in mind that the research investigates the implementation of an urban growth model, SLEUTH, as a support tool in the planning and decision making process. These investigations are carried out on historical urban data for the region falling under the control of the Cape Metropolitan Authority. The primary aim of the research was to simulate future urban expansion of Cape Town based on past growth patterns by making use of cellular automata methodology in the SLEUTH modeling platform. The following objectives were explored, namely to: a) determine the impact of urbanization on the study area, b) identify strategies for managing urban growth from literature, c) apply cellular automata as a modeling tool and decision-making aid, d) formulate an urban growth policy based on strategies from literature, and e) justify SLEUTH as the desired modeling framework from literature. An extensive data base for the study area was acquired from the product of a joint initiative between the private and public sector, called “Urban Monitoring”. The data base included: a) five historical urban extent images (1977, 1988, 1993, 1996 and 1998); b) an official urban buffer zone or ‘urban edge’, c) a Metropolitan Open Space System (MOSS) database, d) two road networks, and d) a Digital Elevation Model (DEM). Each dataset was converted to raster format in ArcEdit and finally .gif images were created of each data layer for compliance with SLEUTH requirements. SLEUTH processed this historic data to calibrate the growth variables for best fit of observed historic growth. An urban growth forecast was run based on the calibration parameters. Findings suggest SLEUTH can be applied successfully and produce realistic projection of urban expansion. A comparison between modelled and real urban area revealed 76% model accuracy. The research then attempts to mimic urban growth policy in the modeling environment, with mixed results.

Thesis (PhD)--Stellenbosch University, 2004.<br>ENGLISH ABSTRACT: During the 1990s in South Africa an increasing need for care and housing for the aged became evident. On the one hand greater longevity created a rapid increase in the number of aged people of all population groups, and on the other, changes in government policy foreshadowed a drastic scaling down of the role of the state with regard to the supply of housing for the aged. In the midst of these changes, one type of housing for the aged has remained outside the pale of the altering policy scenario: retirement villages. This then is the main focus of the study. Taking into account the fact that retirement villages presently focus mainly on a single elderly group, namely wealthy white persons, and set against the backdrop of the changing situation regarding policy towards housing for the aged, the question arises whether in future retirement villages will be capable of providing housing for a greater percentage of elderly people than at present. The present demand and supply of retirement villages is critically evaluated within the context of housing for the aged in general in order to contribute to a future vision for housing for the aged within the new South Africa. In view of this - and taking into account cultural, financial and age differences - the housing and care needs, as well as the preferences and perceptions of 228 elderly persons, are analysed and compared in this respect with the views of relevant interested parties, namely gerontologists, sociologists, non-governmental organizations and retirement village developers. In focusing on 34 retirement villages in the greater Cape Town area, this study fills the gap that exists within urban geography regarding housing for the aged. An analysis is done of the location of retirement villages in this area, as well as of the factors that influence the selection of locations for such housing schemes. Not only are issues of supply and demand addressed, but also the problems with which the retirement village industry has to deal, such as service delivery, grading (classification status according to specific standards) and the spatial placing of villages. In this wayan attempt is made to find a solution to related problems. The most important conclusion that arose from this research can be summarized as being that elderly people show a lack of knowledge regarding the services offered by these facilities. For this reason retirement villages have been classified under four headings, according to the care services they offer, namely the independent lifestyle village, the supportive care village, the continuous care village and the care for life village. Retirement villages can play an ever-increasing role in providing housing and care for the aged. This will only happen if the various preferences, opinions and perceptions of the different groups of elderly persons are seriously considered and compared to the views of the experts in the field. The basic preferences of the aged can be summarised as: renting residential units instead of buying them; no luxuries such as therapy services; safety considerations incorporated in the design of the interior of the units; being able to use their own furniture in the units; primary health care offered; availability of recreational facilities; good corporate management and accessibility to essential services (in terms of the location of the village). In conclusion, experts of retirement village housing should avoid problems that stem from injudiciously developing complexes that through their inaccessiblity isolate residents from the rest of the community.<br>AFRIKAANSE OPSOMMING: In Suid-Afrika is die negentigerjare van die vorige eeu gekenmerk deur 'n toenemende behoefte aan die versorging van en behuising vir bejaardes. Enersyds het langer lewensverwagting 'n snelle toename in die getal bejaardes onder alle bevolkingsgroepe meegebring en andersyds het veranderings in owerheidsbeleid 'n drastiese afskaling in die rol van die staat met betrekking tot behuisingsvoorsiening aan bejaardes in die vooruitsig gestel. Te midde van die verandering ten opsigte van behuisingsvoorsiening vir bejaardes, is daar egter een tipe behuising vir bejaardes wat buite die veranderde beleidstoneel van die staat staan, naamlik aftree-oorde - wat dan die hooffokus van hierdie ondersoek is. In die lig van die veranderende beleidsomgewing rakende die voorsiening van behuising aan bejaardes ontstaan die vraag of aftree-oorde in die toekoms aan 'n groter persentasie bejaardes as tans behuising kan voorsien, gegee die feit dat aftree-oorde tans veralop 'n enkele groep bejaardes, naamlik welgestelde wit bejaardes, fokus. Die huidige vraag na en aanbod van aftree-oorde word in die lig hiervan krities evalueer teen die agtergrond van behuising vir bejaardes in die algemeen ten einde te help bou aan 'n toekomsvisie vir die behuising vir bejaardes in die nuwe Suid-Afrika. Met die oog hierop word die behuisingsen versorgingsbehoeftes, -voorkeure en -persepsies van 228 bejaardes ontleed (gegee hul kulturele, finansiële en ouderdomsverskille) en dan vergelyk met die menings van tersake rolspelers aan die aanbodkant, naamlik gerontoloë, sosioloë, nieregeringsinstansies en die ontwikkelaars van aftree-oorde. Hierdie studie vul die leemte wat binne stedelike geografie bestaan ten opsigte van bejaardes, deur te fokus op 34 aftree-oorde in Kaapstad en sy soomdistrikte met 'n ontleding van die ligging van oorde in hierdie gebied, asook van faktore wat die plasingskeuse van oorde beïnvloed. In die navorsing word nie net die vraag en aanbod van aftree-oorde aangespreek nie, maar ook die probleme waarmee die aftree-oord industrie te doen het, soos dienslewering, gradering (klassifikasie-status volgens bepaalde maatstawwe) en die ruimtelike plasing van oorde om 'n bydrae tot die oplossing van sodanige probleme te kan lewer. Die belangrikste gevolgtrekkings van hierdie studie kan soos volg opgesom word: Daar is 'n gebrek aan kennis by bejaardes ten opsigte van die dienste wat verskillende aftree- oorde aan die bejaarde bied. Vir hierdie rede is aftree-oorde op grond van hulle versorgingsdienste in vier groepe geklassifiseer, naamlik die onafhanklike lewenstyloord, die ondersteuningsdiensoord, die volgehoue versorgingsoord en die lewenslange versorgingsoord. Aftree-oorde kan 'n al groter rol in die voorsiening van behuising aan en versorging van bejaardes speel mits aandag gegee word aan die verskillende voorkeure, menings en persepsies van die verskillende bejaarde groepe en hoe dit met dié van die deskundiges verskil. Die basiese voorkeure van bejaardes kan opgesom word as: die huur van wooneenhede in plaas van om te koop; geen luukshede soos terapiedienste nie; die veiligheidsbewuste ontwerp van die interieur; die gebruik van eie meubels in die wooneenhede; die voorsiening van primêre gesondheidsorg; die beskikbaarheid van rekreasiefasiliteite; die goeie bestuur van die oord en die geskikte ligging van die oord ten opsigte van die belangrikste dienste. Laastens moet deskundiges van aftree-oord behuising waak teen probleme wat sentreer rondom die plasing van 'n oord asook die isolasie van die aftreeoord inwoners van die gemeenskap.

Thesis (MA)--Stellenbosch University, 2003.<br>ENGLISH ABSTRACT: Rural tourism and agritourism are in their infant stages in South Africa. It benefits the farmer, the local community, the rural area, the tourist and the country. It is therefore a viable option but requires more research, management, planning and control for it to be successful. Many agritourism ventures are not as successful as they should be. The problem is that farmers/landowners do not research the demand for tourist products before they deliver them and do not know whom they are catering for. To stay competitive, the tourists' characteristics ought to be understood. This would provide insight into what facilities and services to supply, what resources to utilise and how to promote the agritourism destination. The aim of this study was to segment the potential and practising agritourists into different clusters, according to their preferences, and to investigate the clusters' characteristics and behaviours. The objectives were to: 1. Investigate the potential and practising agritourists' socio-economic, demographic and travel characteristics. 2. Rate all the attractions, activities and services according to their popularity. 3. Clarify the preferences of these tourists, concerning attractions and activities, by combining similar ones. 4. Divide the tourists into clusters of similar preferences. 5. Compare the socio-economic, demographic and travel characteristics of the different clusters of tourists. 6. Produce a set of guidelines for entrepreneurs/farmers/landowners, as to what tourist products they should supply or develop, and for whom, and how they should market them. This study entailed distributing questionnaires to potential and practising agritourists at shopping centres and farms involved in agritouri'swimming', 'picnicking', 'scenic drives', 'dams/lakes/pans' and 'small game' were the most popular agritourism attractions and activities. Factor analysis was used to reduce the number of variables by combining like variables (attractions) and cluster analysis was utilised to segment the respondents into five clusters of tourists with similar preferences for agritourism attractions and activities. Cross tabulation, frequencies and descriptive statistics were used to describe these different clusters. These groups of tourists were described according to their demographic, socio-economic and travel characteristics. Segmenting tourism markets and compiling profiles of the tourists within each sub-market has proved to be advantageous. Once the demands of the tourists are known, the appropriate facilities and number of facilities can be developed. Knowing who the tourists are and where to target them, will lead to better marketing, planning and promotion of the destination. Customer satisfaction will be increased, as it is known exactly who must be catered for, thereby resulting in repeat visits. The five clusters of tourists were: 'general nature tourists'; 'urban tourists'; 'hard outdoor adventure tourists'; 'visual or soft outdoor adventure tourists'; and 'agritourists'. All these tourists, except 'urban tourists', are excellent potential agritourists. The results of this study were used to compile guidelines for entrepreneurs. These guidelines could help them in deciding who to target (which clusters), what agritourism products to develop (attractions, activities and services) and how to market them (means of advertising). Appropriate accommodation types and the availability of equipment and facilities for activities also act as attractions. This study demonstrates an inexpensive method of gathering information about tourists, thereby improving marketing and planning approaches. It illustrates how the potential and practising agritourists can be divided into sub-markets. The agritourism market is a heterogeneous market and must therefore be segmented. Any entrepreneur can use the results of this market segmentation. Any future studies, similar to this one, could consist of a sample much larger. As this study was primarily based in the Western Cape, similar research should be executed in other distinct regions. It would be illuminating to see how the groups of agritourists vary according to geographical areas.<br>AFRIKAANSE OPSOMMING: Landelike en agritoerisme is in hulontluikende fase in Suid-Afrika. Dit bevoordeel die boer, die plaaslike gemeenskap, die landelike streek, die toeris en die land. Dit is 'n lewensvatbare opsie maar benodig meer navorsing, bestuur, beplanning en beheer om suksesvol te wees. Baie agritoerisme ondernemings is nie so geslaagd as wat dit kan wees nie. Die probleem is dat die boere/grondeienaars nie die nodige navorsing doen omtrent die aanvraag na 'n produk voordat hul dit aanbied nie, en weet ook nie watter toerismesegment hul wil bevredig nie. Om mededingend te bly moet die toeris se eienskappe verstaan word. Dit sal insae gee in watter fasiliteite en dienste om te voorsien, asook watter bronne om te benut om die agritoerismedestinasie te promoveer. Die doel van hierdie studie was om potensiële en praktiserende agritoeriste te groepeer in verskillende segmente volgens hulle voorkeure en groeps gedrag. Die doelwitte was om: 1. Potensiële en praktiserende agritoeriste se sosio-ekonomiese, demografiese en reiseienskappe te ondersoek. 2. Die rangorde van attraksies, aktiwiteite en dienste volgens gewildheid te bepaal. 3. Voorkeure van toeriste aangaande attraksies en aktiwiteite te bepaal deur gelyksoortige groeperings te kombineer. 4. Toeriste in trosgroepe met gelyksoortige voorkeure te verdeel. 5. Die sosio-ekonomiese, demografiese en reiseienskappe van verskillende toeristetrosgroepe te vergelyk. 6. Riglyne vir ondernemers/boere/grondeienaars te formuleer vir watter toeristeprodukte hul behoort te verskaf of ontwikkel en aan wie en hoe hul dit behoort te bemark. Hierdie studie het die verspreiding van vraelyste aan potensiële en praktiserende agritoeriste in winkelsentrums en plase, betrokke by agritoerisme, behels. Die vraelyste het informasie oor potensiële en praktiserende agritoeriste verskaf Een-honderd en agt vraelyste was voltooi. Die respondente het aangedui dat 'berge', 'watervalle', 'riviere', 'grootwild', 'swem', 'pieknieks', 'natuurskoonplesierritte' , 'damme/mere/panne' en 'kleinwild' die gewildste agritoerisme attraksies en aktiwiteite is. Faktoranalise is gebruik om die getal verandelikes te verminder deur soortgelyke verandelikes (attraksies) te kombineer en trosanalise te gebruik om die respondente te segmenteer in vyf trosgroepe toeriste met gelyksoortige voorkeure vir agritoerisme attraksies en aktiwiteite. Kruistabulering, frekwensies en beskrywende statistiek was gebruik om hierdie verskillende trosse te beskryf volgens hul demografiese, sosio-ekonomiese en reiseienskappe. Segmentering van die toerismemark en die saamstel van profiele van die toeriste binne elke sub-mark is voordelig bevind. As die vereistes van die toeriste bekend is, kan die gepaste fasiliteite en aantal fasiliteite ontwikkel word. Om te weet wie die toeriste is en waar om hulle te teiken sal tot beter bemarking, beplanning en promosie van die destinasie lei. Kliëntbevrediging sal toeneem, omdat ondernemers presies weet wie om te bevredig en dit sal herhaalde besoeke tot gevolg hê. Die vyf trosgroepe toeriste was: 'algemene natuurtoeriste'; 'stedelike toeriste'; 'ekstreme buitelug avontuurtoeriste' ; 'visuele of nie-ekstreme buitelug avontuurtoeriste' ; en 'agritoeriste'. Al die toeriste behalwe stedelike toeriste is uitstekende potensiële agritoeriste. Die resultate van hierdie studie is gebruik om riglyne vir ondernemers te kompileer. Hierdie riglyne kan hul help om te besluit wie om te teiken (watter trosse), watter agritoerisme produkte om te ontwikkel (attraksies, aktiwiteite en dienste) en hoe om dit te bemark (wyse van advertensie). Toepaslike akkommodasie en die beskikbaarheid van toerusting en fasiliteite vir aktiwiteite dien ook as attraksies. Hierdie studie demonstreer 'n ekonomiese manier om informasie omtrent toeriste in te win, om bemarking en beplanning te verbeter. Dit illustreer hoe die potensiële en praktiserende agritoeris ook in sub-markte ingedeel kan word. Die agritoerisme mark is 'n heterogenemark en moet dus gesegmenteer word. Enige ontwikkelaar kan die resultate van hierdie marksegmentasie gebruik. Soortgelyke navorsing behoort in die toekoms op 'n groter steekproef gedoen word. Omdat hierdie studie hoofsaaklik in die Wes-Kaap gebaseer was, behoort soortgelyke navorsing in ander bepaalde streke uitgevoer te word. Dit sal insiggewend wees om te sien hoe die groepe agritoeriste volgens geografiese streke varieer.