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《Journal of Hydroelectric Engineering》 2013-01
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Spatial-temporal evolution of soil water erosion in Donghu watershed based on cellular automata

ZHANG Wenting1,2,WANG haijun1,WU Zhijiang1,ZHANG Xiang3(1.School of Resources and Environmental Science,Wuhan University,Wuhan 430079; 2.Department of Geography and Resource Management,the Chinese University of Hong Kong,Hong Kong 3.School of Resources and Environment,HuaZhong Agriculture University,Wuhan 430070)  
This paper puts forth a new tool,cellular automata(CA),and a universal soil loss equation(USLE) for forecasting of strong spatial-temporal dynamic evolution of soil loss.Linear neural network was adopted to develop an USLE model for prediction of the tendency of land use change,considering the impact of road and commercial center construction on the development of land use.Based on the previous work,transformation rules in CA model were identified to improve prediction accuracy.Calculations show that the predicted land use coverage has an accuracy of 72%.Finally,the predicted land use data was inputted into the USLE model to predict the distribution of future soil erosion.As a case study,the existing soil erosion in the Donghu watershed in Wuhan and its future development were calculated and analyzed.
【Fund】: 国家自然科学基金资助项目(40871179)
【CateGory Index】: S157
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