Comparison of Soil Erosion Monitoring Methods in Xihe River Basin in Liaoning Province

Based on RUSLE model,quantitative monitoring of soil erosion was carries out in the Xihe River Basin using HJ-1A/1B data,DEM,TRMM and other data.Soil erosion estimation from the monitoring was compared to the classification using the multi-factor method.In addition,further validation for monitoring results was performed using remote sensing survey of soil erosion of Liaoning Province published in 2005.The comparison results show that CCD data produced by HJ-1A/1B was adequate for soil erosion monitoring and RUSLE model can be applied well to monitor soil erosion.Total erosion area in 2009 reduced significantly comparing with that in 2005.Soil erosion distributed mainly in northwest and southeast mountainous areas of the study site,and the opencast coalmines within the "coal city" of Fuxin City resulted in severe or even stronger soil erosion.