关于黄甫川流域产沙问题的思考

Reflections on the Issue of Sediment Yielding in the Huangfuchuan Watershed

黄甫川是黄河中游多沙粗沙区泥沙问题最严重的支流,造成流域多沙粗沙的原因历来说法不一,一般多认为是砒砂岩所致.本文通过对多方面情况的分析,认为该流域泥沙主要来源于风沙活动.对于有的科技工作者认为黄河中游的粗沙来自风沙的只占4.6%～9.5%的说法,作者认为依据不足,其数值明显偏低.目前我国对风沙的侵蚀搬运缺乏足够的观测资料,因此还不能轻易地下结论.令后应加强对风沙活动的观测研究,以便为治黄决策提供更为科学的依据.

Huangfuchuan River, a tributary of the Yellow River, has the most severe problem of high sediment content in the coarse sediment area of the middle Yellow River. There are different explanations for the cause of high coarse sediment content. This paper, taking into consideration of many respects, draws a conclusion that sediment of the Huangfuchuan Watershed is mainly due to wind and sand activities. The author thinks that the arguments of some scientific research people who hold that only 4. 6% to 9. 5% of the coarse sediment in the middle Yellow River is resulted from wind and sand activities are not enough, and the numbers should be higher, observed data about erosion transport of wind and sand are not adequate to draw a convincing conclusion. Observation and research of wind and sand activities should be stressed to provide scientific information for decision-making of Yellow River harnessment.