论黄河干流内蒙古段泥沙危害及其防治

分析了黄河干流北端产生泥沙淤堵的原因，认为该段支流的水土流失严重是其根源，上游来水量减少加剧了干流的淤堵。阐述了泥沙淤堵对国民经济和社会可持续的重大影响，通过对２条支流治理与未治理的实例对比分析，提出多泥沙河流治理对策；变被动防守为主动治理，从水土流失防治着手；按市场经济机制，全社会共同出力进行治理；采用综合，系统的防治措施，治理开发水沙资源，变害为利，全流域统筹考虑，水沙统一调控。

Sediment Hazard and Corresponding Control in Trunk Stream of the Yellow River in the Inner Mongolia Autonomous Region

The reasons for causing sediment stagnation in the northern reaches of the Yellow river have been analyzed.It is considered that the severe soil and water losses in the tributaries are the main reason for the sediment stagnation and the reduced volume of water flow from the upper reaches of the Yellow river made the sediment stagnation more serious in trunk stream of the Yellow river in the Inner Mongolia Autonomo us Region.The fatal impacts of the sediment stagnation on the national economy and social sustainable development are also described.Some countermeasures to harness a watershed with more sediment yield were presented by the analytical comparison between the harnessed watershed and the not harnessed one.These measures include:(1)turning passive prevention to active control of soil and water losses;(2) gathering the attention from all levels of the society to harness watersheds according to the market economy rule;(3) developing waterand sediment resources and changing side-effects to usefulness by means of the comprehensive and systematic measures;(4) regulating and controlling water and sediment status in view of the total reaches of the Yellow river.