系统阐述了金沙江流域水土流失及治理现状 ,基于典型小流域和区域调查 ,对已完成水土流失治理的减蚀效应作出评价 ,对未来水土流失治理的进度与减蚀效应进行预期分析 ;并在水土流失对河道泥沙影响分析基础上 ,阐述水土流失治理对干流河道泥沙的减沙效应 .金沙江流域坡面水土流失治理对减少坡面侵蚀作用显著 ,但对干流河道泥沙减少效应不明显 ,要减少金沙江输入三峡水库的入库泥沙 ,应寻求其它更为有效的减沙对策 .

Based on the investigation of typical watersheds and region, the authors set forth the situation of soil and water loss and the situation of the control of soil and water loss in the Jinsha River Watershed, and evaluate the effect of the control of soil and water loss on decreasing fluvial silt. It shows that the effect of surface control of soil and water loss on decreasing the surface erosion in the Jinsha River Watershed is very remarkable, but its effect on decreasing fluvial silt in main river is not very notable. To decrease the fluvial silt from Jinsha River to Three Gorges Reservoir, other effective strategies on decreasing fluvial silt should be studied and carried out.