渭河水沙变化及其影响因素分析  

Variations of Water and Sediment of the Weihe River and Impact Factors Analysis

作　　者：马勇[1] 秦百顺[1] 王宏[1] 赵俊侠[1] 

机构地区：[1]黄河水利委员会天水水土保持科学试验站,甘肃天水741000

出　　处：《中国水土保持》2002年第8期18-20,共3页Soil and Water Conservation in China

摘　　要：渭河是黄河的一条多泥沙支流 ,1970年之前每年向黄河输送泥沙 1 85亿t。渭河具有水沙异源的特点 ,泥沙主要来自南河川站以上地区 ,径流主要来自南河川站至咸阳站区间流域。 1970～ 1996年 ,流域内水利水保措施年均减水2 5 5亿m3 ,年均减沙 0 6792亿t,发挥了重要的蓄水拦沙和削洪作用。The Weihe River is a high sediment content tributary of the Yellow River. Before 1970, sediment delivery of the river to the Yellow River was 185 million tons annually. The characteristic of the river is different sources of water and sediment. The sediment mainly comes from the region above Nanhechuan Station and runoff from the region between Nanhechuan to Xianyang Station. During 1970～1996, the annual average runoff had been reduced 2.55 billion m 3 and sediment 67.92 milliontons through the measures of hydraulic works and soil and water conservation in thebasin, playing an important role million tons through the measures of hydraulu works and soil and water conservation in the basin,playing an importortant role on storing water, retaining sediment and reducing flood volumes. At present, in the basin there is a momentum of increasing sediment because of human activities.

关 键 词：渭河 水沙变化 水土保持 水利工程 减水减沙效益 

分 类 号：P333[天文地球—水文科学]