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Dissertations / Theses on the topic 'Erosion Watershed management'

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Published: 4 June 2021

Last updated: 7 February 2022

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1

Dun, Shuhui. "Adapting WEPP (Water Erosion Prediction Project) for forest watershed erosion modeling." Online access for everyone, 2006. http://www.dissertations.wsu.edu/Thesis/Summer2006/S%5FDun%5F073106.pdf.

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2

Parker, Ronald Dean 1948. "The effect of spatial variability on output from the water erosion prediction project soil erosion computer model." Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/191165.

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Spatial variability is all that stands between hydrology and science, forcing us to deal in probabilities and averages. Because of scale, we can not consider forces on individual soil particles, water molecules and solute ions when addressing human size problems. We must therefore look at aggregate properties and mean values for parameters and inputs in computer modeling of hydrologic phenomena. This research explores the impact of spatially variable inputs on the Water Erosion Prediction Project soil erosion computer program. Distributions of input variables are generated and assigned randoml

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3

Srivastava, Anurag Dougherty Mark Zech Wesley C. "Application and evaluation of WEPP in a forested watershed with perennial streams." Auburn, Ala., 2010. http://hdl.handle.net/10415/2036.

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4

Cnossen, Peter D. "Streambank erosion: mechanisms and mitigation techniques." Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/101370.

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This report presents a study of the various mechanisms that may cause erosion of streambanks and the corresponding mitigation techniques used to combat them. The determination of each may depend upon a number of considerations. The source of the information comes from a variety of reports and papers, which are referenced in the text. Of all the mitigation techniques available to prevent streambank erosion, fabrics will generally offer the most cost effective method. Fabrics have had a good service record since their inception approximately 20 years ago. Further, as the technology continues t

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5

Hernandez-Narvaez, Mariano 1956. "Analysis of the quasi-steady state approximation on parameter identifiability for a dynamic soil erosion model." Diss., The University of Arizona, 1992. http://hdl.handle.net/10150/191169.

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In 1985 the USDA - Agricultural Research Service initiated a national project called Water Erosion Prediction Project (WEPP) to develop a new generation water erosion prediction technology which will replace the USLE by 1992, the most widely used technology for estimating soil erosion by water. For simplicity, the WEPP model was developed assuming quasi-steady state conditions. An evaluation of the effects of formulating the unsteady state sediment continuity equation by assuming quasi-steady state conditions is presented. A methodology was developed to study soil erosion process in rainfall s

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6

Bryson, Louise Kay. "An erosion and sediment delivery model for semi-arid catchments." Thesis, Rhodes University, 2016. http://hdl.handle.net/10962/2892.

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Sedimentation has become a significant environmental threat in South Africa as it intensifies water management problems in the water-scarce semi-arid regions of the country. As South Africa already allocates 98% of available water, the loss of storage capacity in reservoirs and degraded water quality has meant that a reliable water supply is compromised. The overall aim of this thesis was to develop a catchment scale model that represents the sediment dynamics of semi-arid regions of South Africa as a simple and practically applicable tool for water resource managers. Development of a conceptu

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7

Nguyen, Bich Ngoc, and Hoang Khanh Linh Nguyen. "Basin resources management: simulating soil erosion risk by soil and water assessment tool (SWAT) in Ta Trach river watershed, central Vietnam." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-190594.

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Nowadays, one of the urgent issues in the management of river basin resources as land degradation, especially soil erosion risk occurs due to complex factors of climate, cultivation practices of human and impacting of the operation of socio-economic development taking place in the basin. Soil erosion has been considered as the primary cause of soil degradation since soil erosion leads to the loss of topsoil and soil organic matters, which are essential for the growing of plants. Ta Trach river watershed, is a mountainous basin lying to the West - South of Thua Thien Hue province, having comple

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8

Ribble, Steven W. "Erosion control alternatives which promote native landscape types in the Old Woman Creek watershed, Erie County, Ohio." Virtual Press, 1996. http://liblink.bsu.edu/uhtbin/catkey/1020168.

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This project recommends an appropriate land cover master plan for the lower portion of the west fork of Old Woman Creek. The project utilizes the various vegetative treatments, or measures available, to lessen storm water induced sediment concentration levels within the agricultural study site. The over riding design principle is that a return to a more native landscape through the addition of native-like plant species, en mass or as a hedgerow around agricultural fields, will improve the bio-filtering of sediment from runoff as it has in other locations. (Ingles 6/11/96) Suggestions for other

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9

Conroy, William John. "A coupled upland-erosion, instream hydrodynamic-sediment transport model for assessing primary impacts of forest management practices on sediment yield and delivery." Online access for everyone, 2005. http://www.dissertations.wsu.edu/Dissertations/Spring2005/w%5Fconroy%5F041505.pdf.

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10

Ross, Morgan. "Using the Rangeland Hydrology and Erosion Model to assess rangeland management practices on the Kaler Ranch." Thesis, The University of Arizona, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=1538935.

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<p> It is difficult to assess rangeland management practices at a hillslope scale because of the spatial and temporal variability of ecohydrological processes across a landscape. The Conservation Effects Assessment Project (CEAP) aims to provide a cost-effective method for quantifying benefits of conservation practices on rangelands. This study uses the Rangeland Hydrology and Erosion Model (RHEM) to develop a framework to assess rangeland management practices by quantifying sediment yield and runoff. Kaler Ranch, located in Eastern Arizona, was used as a study site because of their recently i

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11

Nguyen, Bich Ngoc, and Hoang Khanh Linh Nguyen. "Basin resources management: simulating soil erosion risk by soil and water assessment tool (SWAT) in Ta Trach river watershed, central Vietnam: Research article." Technische Universität Dresden, 2014. https://tud.qucosa.de/id/qucosa%3A29091.

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Nowadays, one of the urgent issues in the management of river basin resources as land degradation, especially soil erosion risk occurs due to complex factors of climate, cultivation practices of human and impacting of the operation of socio-economic development taking place in the basin. Soil erosion has been considered as the primary cause of soil degradation since soil erosion leads to the loss of topsoil and soil organic matters, which are essential for the growing of plants. Ta Trach river watershed, is a mountainous basin lying to the West - South of Thua Thien Hue province, having comple

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12

Cox, Christopher 1967. "Watershed master planning for St. Lucia using geographic information systems." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27303.

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A method for estimating long-term average annual soil loss under different land management scenarios from the Marquis and Soufriere watersheds on St. Lucia is presented. The Revised Universal Soil Loss Equation (RUSLE) was used, and a GIS was employed to generate the required input parameters. Model execution and results were also generated within the GIS. Modelling soil loss for the different land management scenarios was based upon a land capability classification and associated conservation treatments. Soil losses under current agricultural land-use patterns were analyzed and compared to po

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13

Strauch, Michael. "Integrated watershed modeling in Central Brazil." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-143807.

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Over the last decades, fast growing population along with urban and agricultural sprawl has drastically increased the pressure on water resources of the Federal District (DF), Brazil. Various socio-environmental problems, such as soil erosion, non-point source pollution, reservoir silting, and conflicts among water users evoked the need for more efficient and sustainable ways to use land and water. Due to the complexity of processes relevant at the scale of river basins, a prior analysis of impacts of certain land use and/or land management changes is only feasible by means of modeling. The So

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14

Abedrabboh, Walid Yousef. "Multi-objective decision making applied for watershed development planning of Zarqa River Basin in Jordan." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/191142.

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In developing natural resources, decision makers are seeking to achieve different objectives, which cannot be reduced to a single objective such as economic efficiency, this covers only part of the problem. Tradeoffs between multiple objective of unequal importance is unavoidable in the process of selection or ranking of alternative developmental projects or plans. Multiobjective technique has the ability to deal with qualitative and quantitative objectives, also it enhances the planning process by involving broader segments of the society in the process of decision making. Compromise programm

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15

Safwat, Amr M. "Stochastic Multimedia Modelling of Watershed-Scale Microbial Transport in Surface Water." University of Cincinnati / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1406880416.

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16

Santos, Julio Cesar Neves dos. "MensuraÃÃo da erosÃo do solo no semiÃrido em diferentes usos de terras e escalas espaciais." Universidade Federal do CearÃ, 2012. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=7299.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>A obtenÃÃo de dados de erosÃo do solo em diferentes escalas espaciais Ã de fundamental importÃncia, principalmente no semiÃrido do Nordeste brasileiro onde esses dados sÃo escassos. O semiÃrido brasileiro Ã vulnerÃvel Ã erosÃo hÃdrica, principalmente devido Ãs suas caracterÃsticas climÃticas, edÃficas e Ãs prÃticas de exploraÃÃes insustentÃveis, resultando no empobrecimento dos solos agrÃcolas e comprometendo a qualidade das Ãguas dos reservatÃrios superficiais (principais reservas hÃdricas da regiÃo). Nesse sentido, o presente e

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17

Psaris, Alexander Michael. "Assessing Hydrologic and Water Quality Sensitivities to Precipitation Changes, Urban Growth and Land Management Using SWAT." PDXScholar, 2014. https://pdxscholar.library.pdx.edu/open_access_etds/1783.

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Precipitation changes and urban growth are two factors altering the state of water quality. Changes in precipitation will alter the amount and timing of flows, and the corresponding sediment and nutrient dynamics. Meanwhile, densification associated with urban growth will create more impervious surfaces which will alter sediment and nutrient loadings. Land and water managers often rely on models to develop possible future scenarios and devise management responses to these projected changes. We use the Soil and Water Assessment Tool (SWAT) to assess the sensitivities of stream flow, sediment, a

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18

Capanni, Romain. "Étude et gestion intégrée des transferts sédimentaires dans le système Gapeau/rade d'Hyères." Thesis, Aix-Marseille 1, 2011. http://www.theses.fr/2011AIX10187/document.

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Les plages du littoral varois se sont progressivement réduites depuis la seconde moitié du XXème siècle et ne survivent le plus souvent que grâce à de coûteux rechargements. Dans ce contexte, la réponse du milieu et l’intensité du risque dépendent d’abord du soutien sédimentaire apporté par les fleuves côtiers. Cette étude a ainsi pour but de quantifier les apports terrigènes du Gapeau à son embouchure et ses plages limitrophes dans la rade d’Hyères durant des crues et tempêtes. Nous avons mesuré le transport solide dans le cours d’eau, utilisé des formules de transport théorique et analysé l’

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19

Zhou, Hong. "Integration of Analytical Models for Estimating Sediment Supply and Evaluation of Channel Stability." Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1456273575.

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20

William, Apollinaire. "Smallholder Farmers, Environmental Change and Adaptation in a Human-Dominated Landscape in the Northern Highlands of Rwanda." Antioch University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=antioch1527182117011253.

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21

Demarchi, Julio Cesar. "Modelagem das transformações no uso da terra, de processos erosivos e de escoamento superficial na bacia hidrográfica do Ribeirão São Domingos, município de Santa Cruz do Rio Pardo - SP /." Presidente Prudente, 2019. http://hdl.handle.net/11449/191328.

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Orientador: Edson Luís Piroli<br>Resumo: No processo de produção do espaço geográfico, o homem promove mudanças no uso da terra e, consequentemente, alterações no ciclo hidrológico, que dão origem a impactos ambientais negativos, tais como o aumento das taxas de erosão do solo, da exportação de sedimentos das bacias hidrográficas e do escoamento superficial, principalmente quando reduz ou elimina a cobertura vegetal. Tais impactos são observados na bacia do Ribeirão São Domingos, localizada no município de Santa Cruz do Rio Pardo – SP, que passou pelos processos de expansão urbana e intensific

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22

Mzobe, Pearl Nonjabulo. "Sediment linkages in a small catchment in the Mount Fletcher southern Drakensberg region, South Africa." Thesis, Rhodes University, 2014. http://hdl.handle.net/10962/d1013224.

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Soil erosion is a persistent problem that requires continued control efforts as agricultural land loses productivity and communities dependent on the land become increasingly vulnerable to decreased food security. The negative effects of soil erosion in Khamopele River catchment, in the Mount Fletcher southern Drakensberg region of South Africa, are manifest in extensive gullying and wetland loss. Soil erosion has resulted in siltation in a recently constructed dam and the alteration of aquatic habitats. This research was undertaken to identify the sources of eroded sediment in the small upper

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23

Chang, Ching-Yen, and 張清晏. "he Adaptability Analyze of Watershed Management and Erosion Control Methods in Duli Coast Watershed Area." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/42982479203269876979.

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碩士<br>國立屏東科技大學<br>森林系所<br>96<br>Natural environment in Taitung is special, making the natural soil sand disasters keep pouring in such as collapse, ground slippery and mudslides. They endanger local residents, visitor's security and economic construction in the place of the life property to cause great loss, also stop outward of the transportation contact. And due to the overdeveloping exploitation of slope ground,which encounters severity break and loses a natural equilibrium ability, Also,earthquakes are multifarious,typhoon carry pouring rain to encroach upon, with the result that swollen m

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24

Parker, Ronald Dean. "The effect of spatial variability on output from the water erosion prediction project soil erosion computer model." 1991. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1991_192_sip1_w.pdf&type=application/pdf.

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25

Hernandez-Narvaez, Mariano. "Analysis of the quasi-steady state approximation on parameter identifiability for a dynamic soil erosion model." 1992. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1991_561_sip1_w.pdf&type=application/pdf.

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26

Genson, Imelida C., University of Western Sydney, College of Health and Science, and School of Natural Sciences. "Erosion and water resources assessment in the Upper Inabanga Watershed, Philippines : application of WEPP and GIS tools." 2006. http://handle.uws.edu.au:8081/1959.7/14335.

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To complement the Inabanga Watershed Project (BSWM, 2005), the study reported here was conducted to assess erosion and water resources degradation focussed on the Upper Inabanga Watershed using the Water Erosion Prediction Project (WEPP) erosion model and geographic information system and GIS tools. The study was divided into two sections. The first section was the assessment of the impact of land uses and farm management practices using five runoff experimental plots and two watersheds. The second section of the study was an application of the WEPP and GeoWEPP erosion models. Except for most

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27

Fisher, Michael (Michael Patrick) 1966. "Analysis of hydrology and erosion in small, paired watersheds in a juniper-sagebrush area of central Oregon." Thesis, 2004. http://hdl.handle.net/1957/31857.

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Current research indicates that the expansion of western juniper can inhibit soil water retention, storage and prolonged releases from watersheds. This phenomenon is of great importance in eastern Oregon, as western juniper is encroaching into sagebrush/grass communities with a correlated reduction in herbaceous ground cover, resulting in reduced infiltration rates and increased soil loss. A paired watershed study for the purpose of monitoring water quality/quantity as affected by western juniper in the Camp Creek drainage, a tributary to the Crooked River, was established in 1994. Monitoring

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28

Beyene, Kassu Kebede. "Soil erosion, deforestation and rural livelihoods in the Central Rift Valley area of Ethiopia: a case study in the Denku micro-watershed Oromia region." Thesis, 2011. http://hdl.handle.net/10500/5055.

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This research was conducted in one of the districts in the Oromia region located in the Central Rift Valley to assess the problem of soil erosion and deforestation and to determine how these drivers of land degradation affect the livelihoods of farmers. The research was a case study undertaken in an identified micro-watershed making use of the questionnaire interview method. A household sample was obtained using a simple random sampling technique; Information interviews were conducted with community representatives, district level experts and development agents who worked in the community. The

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29

Yesuph, Asnake Yimam. "Prospects of sustainable land management amidst interlocking challenges in the Upper Beshillo Catchments, Northeastern Highlands of Ethiopia." Thesis, 2020. http://hdl.handle.net/10500/26493.

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Land degradation is a great threat to the Beshlo Catchment in Blue Nile Basisn, not merely as an environmental issue, but also a social and economic problem. In Gedalas Watershed (one of the micro catchments of Beshelo), land degradation, mediated by both biophysical and socio-economic drivers, is among the major environmental sustainability and social-economic development threats in the area. The threat is manifested in depletion of natural vegetations, water, soil and other natural resources; disruption of ecosystem functions, processes, integrity, and services. Given its particular vul

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