The soil and water loss in sediment-laden and coarse sand area in the middle Yellow River

especially in the coarse sand concentrated source region is the main source of the sand especially coarse sand of Yellow River.Strengthen the controlling of this area can obviously reduce the sand especially coarse sand into Yellow River

while reducing the water quantity into Yellow River at the same time.But it is clear that the sediment transport water consumption which in order to maintain "no riverbed elevation" is reduced as siltation reducing in the lower reaches because reduced coarse sand into Yellow River.The research showed that the higher the level of controlling

the sediment transport conservation of water is much more in sediment-laden and coarse sand area especially coarse sand concentrated source region.So strengthen the controlling in this area can increase the water resource of Yellow River.