秦岭北麓降水径流变化关系分析

Study of variety relation between rain and runoff of the north foot of Qinling mountain

针对20世纪90年代陕西渭河流域实测径流的大幅度减少情况,选用人类活动对下垫面影响极小的渭河南岸秦岭北麓山区作为研究区域,旨在仅从降水角度,分析降水、径流、径流系数的变化,研究渭河水量减少原因。这对探求渭河流域生态环境的综合治理,合理利用水资源有着非常重要的意义。

Pointed to the measured runoff greatly reduced in 1990s in Weihe Basin in Shaanxi Province, this paper selected the north foot of Qinling Mountain located south side of Weihe River for the research area, only from the angle of rain fall, analyzed the change of precipitation, runoff and runoff coefficient, to find the main reason for significant decrease of runoff in the Weihe Basin. It was very important significance for comprehensive improvement ecosystem environment in Weihe Basin and rational utilization of water resources.