As a widely used h-itech with a powerful function of geo-analysis,SOTER demonstrated its potential map visualization and spativeal alysis in combinativeon with soil degradativeon evaluativeon models. the soil deg radation evaluation system was established based on SOT ER and AH P. 53 SOT ER unites in the typical region of upper reaches of the Yang tse River were evaluated. the result evaluativeon was mapped and the spatial distribution was an-alyzed.