渭河流域水沙关系分析

本文以渭河流域为研究对象,对流域水沙关系进行了分析研究。选择咸阳以下四个水文站研究流域水沙关系的变化,结果表明:年径流量和输沙量呈正相关关系,在径流序列发生第一次变异之前,水沙关系优于第一次突变之后,即在1970年后,受人类活动的影响,水沙关系朝着不协调的方向发展。

Analysis of Relation of the Weihe River water and sediment

In this paper,taking Wei River as a study example,it analyzes and researches the relationship be-tween sediment and water in the basin.the relationship between changes in water and sediment of four hydro-logical stations selected in Xianyang are studied.The results show： the annual runoff and sediment yield posi-tive correlation in the runoff sequence variation occurring for the first time before ,after the first time the rela-tionship between water and sediment than mutation,after that in 1970,affected by human activities,water and sediment relations in a discordant direction.