Study on the model for predicting soil erosion and its application in arid area |
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| Authors: | Yaning Chen |
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| Institution: | (1) Xinjiang Institute of Ecology and Geography, the Chinese Academy of Sciences, 830011 Urumqi, P. R. China |
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| Abstract: | On the basis of analyzing the soil erosion factors in typical arid area basin, this article tries to build a model by using
USLE (Universal Soil Loss Equation). The first step is to digitize the topographic map (1:100 000) and form the DEM (Digital
Elevation Model), then use them to obtain necessary data of topographic factors. The second step is to get main elements causing
soil erosion through using Main Element Analyzing Program. The third step is to systematically analyze all factors of soil
erosion by applying Grey Dynamic Model and Fuzzy Mathematics, and then take GIS software to draw the colored map in the way
that different colors present different intensities of soil erosion. At last the regional change of soil erosion amount on
the basis of the color map is analyzed.
Supported by the Chinese Academy of Sciences. |
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| Keywords: | arid area soil erosion predicting model GIS |
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