水土保持措施对黄河水沙影响评价模型及效益评价研究

Assessment model for soil and water conservation measures impact on runoff and sediment and its application

黄河水沙变化研究是黄河水、沙资源合理利用的前提,水土保持措施对水沙影响评价模型及效益评价是黄河治理开发的基础。本文对第三期黄河水土保持科研基金项目第三专题研究成果进行了总结:综合分析了现有水沙评价模型和孤山川流域水沙变化研究成果,探讨了水土保持措施对产流产沙机制的影响,遴选了用于研究的水沙评价模型,并对研究区的水土保持措施对水沙的影响做了定量分析评价。

The study on variation of runoff and sediment of Yellow river is basis of rational utilization of water and sediment resources, and assessment model for soil and water conservation measures impact on runoff and sediment is one of the important contents of harness and development of Yellow river basin. The main contents which have gotten in the third soil and water conservation fund project are summarized in the paper. The existed water and sediment assessment models and research results for runoff and sediment variation of Gushanchuan river basin are comprehensively analyzed. Based on the analysis for appraisal standards of hydrological model and effect of soil and water conservation measures on mechanism of runoff and sediment yield, assessment models which are used to appraisal benefit of soil and water conservation measures are selected. And finally, influences of environmental change on runoff and sediment in Gushanchuan basin and area above Gaojiabao gauging station in Tuweihe basin are analyzed quantitatively.