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Dissertations / Theses on the topic 'Dryland salinity'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2023

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1

Taylor, Peter John. "Potential impacts of interception belts on the management of dryland salinity /." Title page, contents and abstract only, 1999. http://web4.library.adelaide.edu.au/theses/09AGRP/09agrpt245.pdf.

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2

Speldewinde, Peter Christiaan. "Ecosystem health : the relationship between dryland salinity and human health." University of Western Australia. School of Population Health, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0127.

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Australia is experiencing widespread ecosystem degradation, including dryland salinity, erosion and vegetation loss. Approximately 1 million hectares (5.5%) of the south-west agricultural zone of Western Australia is affected by dryland salinity and is predicted to rise to 5.4 million hectares by 2050. Such degradation is associated with many environmental outcomes that may impact on human health, including a decrease in primary productivity, an increase in the number of invasive species, a decrease in the number of large trees, overall decrease in biodiversity, and an increase in dust product

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3

Carver, Scott Stevenson. "Dryland salinity, mosquitoes, mammals and the ecology of Ross River virus." University of Western Australia. School of Animal Biology, 2008. http://theses.library.uwa.edu.au/adt-WU2009.0100.

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[Truncated abstract] In an era of emerging and resurging infectious diseases, understanding the ecological processes that influence pathogen activity and the influences of anthropogenic change to those are critical. Ross River virus (RRV, Togoviridae: Alphavirus) is a mosquito-borne zoonosis occurring in Australia with a significant human disease burden. In the southwest of Western Australia (WA) RRV is principally vectored by Aedes camptorhynchus Thomson (Diptera: Culicidae), which is halophilic. The inland southwest, the Wheatbelt region, of WA is substantially affected by an anthropogenic s

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4

Graham, Tennille. "Economics of protecting road infrastructure from dryland salinity in Western Australia." University of Western Australia. School of Agricultural and Resource Economics, 2009. http://theses.library.uwa.edu.au/adt-WU2009.0207.

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[Truncated abstract] The salinisation of agricultural land, urban infrastructure and natural habitat is a serious and increasing problem in southern Australia. Government funding has been allocated to the problem to attempt to reduce substantial costs associated with degradation of agricultural and non-agricultural assets. Nevertheless, Government funding has been small relative to the size of the problem and therefore expenditure needs to be carefully targeted to interventions that will achieve the greatest net benefits. For intervention to be justified, the level of salinity resulting from p

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5

Holzapfel, Michael, and n/a. "Regolith-landform mapping and dryland salinity investigaton: Booberoi-Quandialla Transect, Western New South Wales." University of Canberra. Resource, Environmental & Heritage Sciences, 2004. http://erl.canberra.edu.au./public/adt-AUC20060519.144945.

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Landholders in the Booberoi to Quandialla (B-Q) Transect area, located in central west NSW, have been concerned about an emerging dryland salinity problem since the late 1990�s (Wooldridge 2002, pers. comm. Muller 2002, pers. comm.) with borehole information and electromagnetic induction investigations supporting anecdotal observations. The presence of indicator vegetation, waterlogging of soils and salinisation of land are becoming increasingly prevalent, with two well-documented sites including �Strathairlie� near Quandialla, and �Back Creek� near West Wyalong. The B-Q Transect area lies wit

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6

Jardine, Andrew. "The impact of dryland salinity on Ross River virus in south-western Australia : an ecosystem health perspective." University of Western Australia. School of Population Health, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0182.

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[Truncated abstract] A functional ecosystem is increasingly being recognised as a requirement for health and well being of resident human populations. Clearing of native vegetation for agriculture has left 1.047 million hectares of south-west Western Australia affected by a severe form of environmental degradation, dryland salinity, characterised by secondary soil salinisation and waterlogging. This area may expand by a further 1.7-3.4 million hectares if current trends continue. Ecosystems in saline affected regions display many of the classic characteristics of Ecosystem Distress Syndrome (E

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7

Kleplova, Klara Zoe. "Ecosystem Services Based Evaluation Framework of Land-use Management Options for Dryland Salinity in the Avon Region, Western Australian Wheatbelt." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-227654.

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Dryland-salinity management options aim to positively influence the adverse human-induced processes which lead to salinisation of top-soil. Specifically, the processes causing dryland-salinity are rising saline groundwater table and soil erosion. In the Avon region of Western Australia, the management options are evaluated solely on the basis of their efficiency in lowering groundwater tables. However, recently the need to take into account also their wider impact on the ecosystems' resilience has been recognised as well. Nevertheless, the tool to assess these impacts is missing. The aim of th

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8

Clarke, Christopher John. "The impact of geology on dryland salinity, and the development of revegetation strategies, in the western wheatbelt of Western Australia." Thesis, Clarke, Christopher John (1998) The impact of geology on dryland salinity, and the development of revegetation strategies, in the western wheatbelt of Western Australia. PhD thesis, Murdoch University, 1998. https://researchrepository.murdoch.edu.au/id/eprint/51157/.

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The first objective of the research was to investigate whether major geological faults had an impact on the development of dryland salinity, and what mechanism was the cause of the phenomenon. The second objective was to investigate revegetation treatments that would prevent land salinisation, and the effect of faults on the treatments’ impact. Investigation of three groups of catchments in the western wheatbelt. Western Australia, showed ten times more dryland salinity in the catchment underlain by a major fault than in the paired unfaulted catchment(s). Geomorphometric statistics show tha

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9

Abbott, Simon. "Application of geophysical techniques for 3D visualization of regolith hydrogeological architecture and use of this information for management of dryland salinity in Western Australia." Thesis, Curtin University, 2011. http://hdl.handle.net/20.500.11937/1454.

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This thesis demonstrates the use of geophysics to identify the hydrogeological structures and mechanisms responsible for the salinisation of land and water in three different case studies. In addition, it demonstrates the critical importance of the interpreted information products being relevant to the land managers and the management tools and strategies available to them. Three case studies are examined. The common requirement for each study area was the acquisition of detailed sub-surface information on the location of hydrogeological features that could not be interpreted from surface obse

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10

Doole, Graeme John. "Value of perennial pasture phases in dryland agricultural systems of the eastern-central wheat belt of Western Australia." University of Western Australia. School of Agricultural and Resource Economics, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0213.

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Over the past thirty years, price relativities and technological development have motivated an increase in the area of land allocated to cropping, as opposed to pasture production, throughout the central wheat belt of Western Australia. Nevertheless, reducing the proportion of pasture in these rotations has challenged the future productivity of farming systems in this area. First, the frequent application of selective herbicides for weed control in extended cropping rotations has promoted the development of herbicide resistance in a number of major agricultural weeds. Second, the primary use o

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11

Nikrouz, Ramin School of Biological Earth &amp Environmental Sciences UNSW. "Three-dimensional (3D) three-component (3C) shallow seismic refraction surveys across a shear zone associated with dryland salinity at the Spicers Creek Catchment, New South Wales, Australia." Awarded by:University of New South Wales. School of Biological, Earth and Environmental Sciences, 2005. http://handle.unsw.edu.au/1959.4/20607.

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Dryland salinity occurs extensively throughout the Spicers Creek Catchment in central west New South Wales, Australia. The extent of dryland salinity in the Spicers Creek Catchment has severely altered the landscape, having major environmental implication. Large area of the catchments has experienced soil erosion resulting from the saline groundwater in the surface soil causing the destruction of clay and soil structure. The objective of this study was to use seismic refraction methods to map in detail a shear zone, which was associated with an area of major dryland salination. In particula

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12

Bugan, Richard D. H. "Modeling and regulating hydrosalinity dynamics in the Sandspruit river catchment (Western Cape)." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86492.

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Thesis (PhD)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: Bugan, R.D.H. Modelling and regulating hydrosalinity dynamics in the Sandspruit River catchment (Western Cape). PhD dissertation, Stellenbosch University. The presence and impacts of dryland salinity are increasingly become evident in the semi-arid Western Cape. This may have serious consequences for a region which has already been classified as water scarce. This dissertation is a first attempt at providing a methodology for regulating the hydrosalinity dynamics in a catchment affected by dryland salinity, i.e. the Sandsp

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13

Tassell, Geoffrey William. "Geological factors influencing dryland salinity risk." Phd thesis, 1995. http://hdl.handle.net/1885/10066.

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Dryland salinity has become a major environmental problem in Australia through changes in land management incurred since European settlement. Given appropriate conditions of land management and clin1ate, salinisation follows the advent of discharge areas which arise through rises in groundwater level and/or impediments to groundwater flow. Impediments may be structures such as dams, roads and railway embankments but can also occur naturally through geological features. Geological structures such as dykes, faults and contact zones may be impediments to groundwater flow as can changes to hydr

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14

Wagner, Rex. "Dryland salinity in the south-east region, New South Wales." Master's thesis, 2001. http://hdl.handle.net/1885/9985.

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Dryland salinity is claimed to be potentially the nation's greatest environmental problem. In NSW, it occurs mainly in the upland areas in the south-east of the State. This region is part of the Murray-Darling Basin and has the potential to contribute to its worsening salinity. This thesis examines the nature of its occurrence in this area, and the implications for its remediation. There are two opposing models of the causes of dryland salinity. The first, a more long held view, is that salinisation is localised, restricted to particular soils and landforms, restricted in its spread, episodi

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15

Taylor, Peter John 1957. "Potential impacts of interception belts on the management of dryland salinity." 1999. http://web4.library.adelaide.edu.au/theses/09AGRP/09agrpt245.pdf.

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Bibliography: p. 161-185. The main aim of this project was to establish whether or not interception belts can be expected to transpire sufficient volumes of water to be considered a feasible option for controlling rising groundwater. (conclusion)

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16

Dutkiewicz, Anna. "Evaluating hyperspectral imagery for mapping the surface symptoms of dryland salinity." 2006. http://hdl.handle.net/2440/37813.

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Airborne hyperspectral imagery has the potential to overcome the spectral and spatial resolution limitations of multispectral satellite imagery for monitoring salinity at both regional and farm scales. In particular, saline areas that have good cover of salt tolerant plants are difficult to map with multispectral satellite imagery. Hyperspectral imagery may provide a more reliable salinity mapping method because of its potential to discriminate halophytic plant cover from non - halophytes. HyMap and CASI airborne imagery ( at 3m ground resolution ) and Hyperion satellite imagery ( at 30 resolu

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17

Dutkiewicz, Anna. "Evaluating hyperspectral imagery for mapping the surface symptoms of dryland salinity." Thesis, 2006. http://hdl.handle.net/2440/37813.

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Airborne hyperspectral imagery has the potential to overcome the spectral and spatial resolution limitations of multispectral satellite imagery for monitoring salinity at both regional and farm scales. In particular, saline areas that have good cover of salt tolerant plants are difficult to map with multispectral satellite imagery. Hyperspectral imagery may provide a more reliable salinity mapping method because of its potential to discriminate halophytic plant cover from non - halophytes. HyMap and CASI airborne imagery ( at 3m ground resolution ) and Hyperion satellite imagery ( at 30 resol

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18

Gomboso, Jeanette. "A hydrogeological-economic modelling approach to dryland salinity in the North Stirling Land Conservation District, Western Australia." Phd thesis, 1995. http://hdl.handle.net/1885/115204.

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Associated with the problems of rising groundwater levels and dryland salinity are the conflicting economic and environmental objectives which aim to maximise net revenue from agriculture whilst still conserving the ecological standards of the natural environment. From an economic perspective, the central objective of salinity management should be to obtain the socially optimum value of resource use (including conservation) over time. Economics can contribute to the resolution of natural resource conflicts, by concentrating specifically on the allocation of scarce resources among compet

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19

Nikrouz, Ramin. "Three-dimensional (3D) three-component (3C) shallow seismic refraction surveys across a shear zone associated with dryland salinity at the Spicers Creek Catchment, New South Wales, Australia /." 2005. http://www.library.unsw.edu.au/~thesis/adt-NUN/public/adt-NUN20050527.093553/index.html.

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20

Bann, Glen Robert. "Apparent dryland salinity on the uplands of southeastern Australia; quantification of biotic and abiotic indicators, causes, mechanisms, processes and effects." Phd thesis, 2014. http://hdl.handle.net/1885/101934.

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Secondary dryland salinity in Australia has been a major environmental concern for a number of decades, yet aspects remain controversial. These include the processes which induce salinised soils, the environmental impacts of salinity, and the way in which it is mapped and managed. Dryland salinity has been almost universally attributed to rising saline groundwater caused by excess water accumulation in the landscape following European settlement and tree clearing. However, there is a body of evidence that instead suggests increased soil salinisation in S

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21

Kirkby, S. D. (Stephen Denis). "Managing dryland salinisation with an integrated expert system/geographic information system / S.D. Kirkby." 1994. http://hdl.handle.net/2440/21517.

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Bibliography: leaves 119-218.<br>xiv, 218 leaves : ill. (some col.), maps (some col.) ; 30 cm.<br>Title page, contents and abstract only. The complete thesis in print form is available from the University Library.<br>Salt Manager represents the software system developed by this thesis to implement an interactive land classification methodology. An Expert System (ES), a Geographic Information System (GIS), remotely sensed information and a relational database management system (RDBMS) have been utilised to construct the methodology.<br>Thesis (Ph.D.)--University of Adelaide, Dept. of Geography,

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22

Kirkby, S. D. (Stephen Denis). "Managing dryland salinisation with an integrated expert system/geographic information system / S.D. Kirkby." Thesis, 1994. http://hdl.handle.net/2440/21517.

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Bibliography: leaves 119-218.<br>xiv, 218 leaves : ill. (some col.), maps (some col.) ; 30 cm.<br>Salt Manager represents the software system developed by this thesis to implement an interactive land classification methodology. An Expert System (ES), a Geographic Information System (GIS), remotely sensed information and a relational database management system (RDBMS) have been utilised to construct the methodology.<br>Thesis (Ph.D.)--University of Adelaide, Dept. of Geography, 1995

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23

(9805679), Neil Hoy. "Establishment of trees on saline, waterlogged soils." Thesis, 1993. https://figshare.com/articles/thesis/Establishment_of_trees_on_saline_waterlogged_soils/13461608.

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The East Barmoya and adjoining catchments in coastal central Queensland are suffering classic symptoms of dryland salinity, brought on by clearing of dry-rainforests in their upper catchments. The problem became manifest in the 1920-30s, expanded rapidly in the 1950s and has intermittently increased until the present, lagging some 20 to 30 years behind the period of large scale clearing in the catchment. Plant succession onto the new saline environment is considered, and a production system involving marine couch (Sporobolus virginicus) and swamp-oak (Casuarina glauca) is advocated. The role o

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