Study on soil erosion and its spatio - temporal change at Hongfeng Lake watershed based on RUSLE Model

Based on the data of RSr、ainfall、DEM and soil,a study of soil erosion of the Catchment of Lake Hongfenghu located in karst ecological fragile area in Guizhou Province during the past 40 years(1960 ～ 2004) is taken by using GIS and RUSLE Model.The main contents of the research include: computing the annual amount of soil erosion,assessing the soil erosion intensity in the catchment of Lake Hongfeng during the periods of 1960 ～ 1986、1987 ～ 1997 and 1998 ～ 2004,and discussing the relation between s...