陕北秃尾河流域水土保持措施径流效益研究

Research on runoff response to soil and water conservation measures inTuwei watershed in Northern Shaanxi Province

为评价径流变化特别是水土保持措施对陕北秃尾河径流的调节效果,依据已有的研究成果,并结合该流域实测资料,利用成因分割法等方法对秃尾河流域径流的变化情况进行了研究,计算出水土保持措施径流效益。研究结果表明,经以流域为单元的水土保持综合治理,秃尾河流域径流量相对减少,其中水土保持措施的径流效益显著。可为更好地维护陕北地区生态环境、治理黄河中游流域水土流失以及科学合理调配利用水资源提供依据。

For evaluating runoff regulating effects of soil and water conservation measures conducted in Tuwei watershed in Northern Shaanxi Province,the runoff variation of Tuwei watershed is studied by genesis partition method etc.,through reviewing recent research results and collecting measured data in the watershed.The results show that the runoff of Tuwei watershed reduced by comprehensive water and soil conservation measures that are designed taking a watershed as a basic element,thus the benefit of the measures are significant.The study can provide technical support for protecting ecological environment in Northern Shaanxi Province and soil-water loss harnessing work in middle Yellow River,as well as scientific dispatching of water resources.