南水北调与水利科技2013，Vol.11Issue(4)：35-40,6.DOI:10.3724/SP.J.1201.2013.04035
乌云河流域径流变化及其影响因子分析
Analysis of Runoff Variation and Its Impact Factors in the Wuyun River Basin
摘要
Abstract
Based on the data of monthly flow,monthly precipitation,and monthly evaporation at the Dongfeng Station in the Wuyun River Basin,we analyzed the main water supply source to the runoff of Wuyun River and the effects of precipitation and evaporation on the runoff of Wuyun River through the calculations of variation coefficient,peak-pattern degree,high and low runoff ratio,and the climate tendency rate of the hydro-meteorological elements.The results showed that(1) the variation coefficient of annual runoff is 0.32 in the Wuyun River,and the runoff is mainly supplied by snowmelt and precipitation in summer.The annual runoff decreases gradually in four seasons,flood season,and non-flood season,and the decreasing of runoff is more significant during the flood season; and(2) the precipitation and evaporation in the Wuyun River decrease annually and the climate tendency rate of evaporation is-175 mm/10 a.The analysis indicated that the gradual reduction of precipitation may be one of the reasons to cause the decreasing of runoff in the Wuyun River Basin.关键词
乌云河/变差系数/峰型度/丰枯率Key words
Wuyun River/ variation coefficient/Peak-pattern degree/ high and low runoff ratio分类
天文与地球科学引用本文复制引用
王绪娟,门宝辉..乌云河流域径流变化及其影响因子分析[J].南水北调与水利科技,2013,11(4):35-40,6.基金项目
水沙科学与水利水电工程国家重点实验室开放研究基金资助(sklhse-2013-A-03) （sklhse-2013-A-03）
