南水地调的一个替代方案──黄河中游水土保持１黄河流域水土保持具有与南水北调相当的水资源效益黄河中游水土保持之所以具有水资源效益，是因为，为把大量泥沙输送入海，每年约需２２０～２４０亿ｍ３的水。一旦完成黄河中游的水土保持工程，来沙减少９０％以上，每年就... An Alternative to South Water Diversion ── Soil and Water Conservation in the Middle Yellow River 1 Water and Soil Conservation in the Yellow River Basin Has Water Resources Benefit Associated with the South-to-North Water Diversion The reason why water and soil conservation in the middle reaches of the Yellow River is water-saving is because, to transport large amounts of sediment into the sea, About 220 ~ 240 billion m3 of water. Once the project of soil and water conservation in the middle reaches of the Yellow River has been completed, a decrease of more than 90%