关键词: 遥感, 地理信息系统, 土壤侵蚀, 通用土壤流失方程

Abstract: Quantitative research on the soil erosion in the upriver areas of Tuojiang River was carried out via utilizing USLE model combined with GIS and RS technology.The results indicated that most soil erosion in the study area was slight, which made up 85.65% of the whole study area;the light soil erosion accounted for 9.13% of the area while the moderate erosion accounted for 2.89%;the severe, more severe and extremely severe erosion accounted for 2.33% of the total area.The soil erosion of the Upriver Areas of Fu River Watershed was greatly related with its terrain and land use type, and the high soil erosion intensity appeared in the area with heavy damage vegetation.

Key words: remote sensing, geographic information system, soil erosion, universal soil loss equation