Numerical Analysis of Soil Erosionin Mountain Area Using Remote Sensing and GIS

A numerical soil erosion analysis method based on remote 　sensing and GIS technique was developed． By applying overlay method to integrated analysis of the special subjects, such as land use, land cover, geomorphology, hydrologic and climate data， the soil erosion index was calculated with the model to determine the soil erosion degrees. This method was used in the study on soil erosion degree of central Tibet and a good result was obtained．