以修正的通用土壤流失方程为基础,运用RS和GIS技术计算昆明市水源地牧羊河流域的土壤侵蚀模数及土壤侵蚀总量,采用转移矩阵方法分析了1992—2010年不同土壤侵蚀强度的面积变化、土壤侵蚀总量的时间变化及土壤侵蚀强度的空间变化。研究结果表明,流域土壤侵蚀强度不大,以微度侵蚀和轻度侵蚀为主,土壤侵蚀总量呈先增大后减小的趋势。 Based on the modified generalized soil loss equation, the RS and GIS techniques were used to calculate the soil erosion modulus and total soil erosion in the area of ​​the Sheyang River basin of Kunming City. The area of ​​different soil erosion intensities from 1992 to 2010 was analyzed using the transfer matrix method Change, total change of soil erosion and spatial variation of soil erosion intensity. The results show that the intensity of soil erosion in the watershed is not large, with micro-erosion and mild erosion mainly, and the total soil erosion firstly increases and then decreases.