一、问题的提出地跨鄂西、渝东的三峡地区是集生态环境和大面积区域性贫困为一体的较具代表性的中西部欠发达地区,也是长江上游主要的生态脆弱地区之一,突出表现为:(1)长江上游坡耕地水土流失严重的“四大片”(即与长江流域暴雨区相重合的金沙江下游及毕 First, the issue raised across the western Hubei, Chongqing Three Gorges area is a set of ecological environment and large-scale regional poverty as one of the more representative of the less developed central and western regions, but also the upper reaches of the Yangtze River is one of the main ecological fragile areas, Outstanding performance: (1) the upper reaches of the Yangtze River slope farmland soil erosion serious “” four large "(that is, with the Yangtze River Basin rainstorm coincide with the lower reaches of the Jinsha River and completed