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A platform for research: civil engineering, architecture and urbanism
GIS BASED SOIL EROSION MODELLING FOR CONSERVATION PLANNING OF WATERSHEDS
Erosion is a fundamental and complex natural process that is strongly modified by the activities such as land clearance, agriculture, forestry, construction, surface mining and urbanisation. Inventory on soil loss is vital for effective soil conservation planning of a watershed for sustainable development. An alternative sustainable practice is maintaining a tolerable level of erosion. To control erosion, sound land management practices are to be adopted. Modelling spatial distribution of soil erosion under alternate conservation plan options will help to select the option providing the desired benefits. Mathematical and physical based models with continuous simulation used for estimation of soil erosion requires time series data. The information obtained using remote sensing, Geographic Information System (GIS) techniques help the decision makers to prepare soil erosion map accurately in less time and less cost, which help in estimating, analyzing and solving the complex problem of soil erosion. Using the derived Digital Elevation Model (DEM) from the contour map, Slope and aspect maps have been prepared. In the present study Universal Soil Loss Equation (ULSE) is used for the estimation of soil erosion. The various ULSE factor such as, soil erodibility, slope, aspect, rainfall erosivity index factor map has been generated by linking the attribute data and digital soil map data. The developed GIS based ULSE factors are used in the soil erosion modelling under alternate land use conditions and the results are compared.
GIS BASED SOIL EROSION MODELLING FOR CONSERVATION PLANNING OF WATERSHEDS
Erosion is a fundamental and complex natural process that is strongly modified by the activities such as land clearance, agriculture, forestry, construction, surface mining and urbanisation. Inventory on soil loss is vital for effective soil conservation planning of a watershed for sustainable development. An alternative sustainable practice is maintaining a tolerable level of erosion. To control erosion, sound land management practices are to be adopted. Modelling spatial distribution of soil erosion under alternate conservation plan options will help to select the option providing the desired benefits. Mathematical and physical based models with continuous simulation used for estimation of soil erosion requires time series data. The information obtained using remote sensing, Geographic Information System (GIS) techniques help the decision makers to prepare soil erosion map accurately in less time and less cost, which help in estimating, analyzing and solving the complex problem of soil erosion. Using the derived Digital Elevation Model (DEM) from the contour map, Slope and aspect maps have been prepared. In the present study Universal Soil Loss Equation (ULSE) is used for the estimation of soil erosion. The various ULSE factor such as, soil erodibility, slope, aspect, rainfall erosivity index factor map has been generated by linking the attribute data and digital soil map data. The developed GIS based ULSE factors are used in the soil erosion modelling under alternate land use conditions and the results are compared.
GIS BASED SOIL EROSION MODELLING FOR CONSERVATION PLANNING OF WATERSHEDS
Malleswara Rao, B. N. (author) / Dr.Umamahesh, N. V. (author) / Dr.Reddy, G. Thimma (author)
ISH Journal of Hydraulic Engineering ; 11 ; 11-23
2005-01-01
13 pages
Article (Journal)
Electronic Resource
Unknown
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