黄河中游多沙粗沙区水沙控制途径的探讨

Search for Direction in Runoff and Sediment Control in Middle Yellow River's High Sediment Production

根据黄河中游多沙粗沙区暴雨洪水及产流产沙特点，提出了为控制水沙危害，黄河中游治理应分两步走的战略。第一步解决近期水沙控制和耕地问题，主要措施是建设淤地坝和骨干坝。研究表明，在现状坝地、梯田条件下，为满足粮食生产需要，每平方公里需新增坝地３．１８ｈａ，且能满足控制水沙的要求。第二步是进行坡面治理，改善生态环境，以达到根治水沙的目的。

Based on precipitation pattern, flood condition, runoff and sediment production characteristicsof the heavily eroded regions in the middle Yellow River. we suggest a two phase approach tominimize damages done by runoff and sediment. First. key dams and warping dams should be builtto control erosion and to creat new arable land.At the present status of dam-formed land and terraced fields, studies show that 3. 18ha of new land from dam sediment must be added to eachsquare kilometres of surface before agriculture production can reach self-sufficiency and also meetthe demand for erosion control. The second phase proceeds to develop sloping lands. improves thenatural environment gradually so as to achieve complete erosion control.