Actions of the Longyangxia and Liujiaxia Reservoirs on the Runoff and Sediment of Yellow River

摘要

The water resource exploitation and utilization of the upper reach of Yellow River promoted the economy development of the basin and also had impacts on the river itself. Based on a great deal of field data, this paper analysed the characteristics of the runoff regulations of Longyangxia and Liujiaxia reservoir and researched the impacts they have on water- sediment and the adjusting of erosion and deposition of the riverbed, and furthermore discussed the relationship between keeping the healthy life of Yellow River and the regulations of the reservoirs. The mature water - sediment regulating and controlling system and the reasonable reservoir regulations will have positive effects on decreasing channel deposition and keeping healthy life of the Yellow River.