水力发电2025，Vol.51Issue(1)：11-15,5.
基于变异系数法的沙颍河上游干流生态基流价值变化研究
Change of Ecological Baseflow Value of the Upper Main Stream of Shaying River by Coefficient of Variation Method
摘要
Abstract
To identify the variation law of ecological baseflow value,the factor system affecting ecological baseflow is established based on the data of rainfall,evaporation,discharge,per capita water consumption,per capita GDP and water quality compliance rate of Gaocheng,Huaxing and Huangqiao sections of the upper main stream of Shaying River from 2008 to 2021.The inter-annual changes of the ecological baseflow value of the reaches are studied by the coefficient of variation method and based on the ecological base flow value in 2021.The results show that,(a)the annual ecological baseflow value is 48.3 million-472.6 million yuan in Gaocheng section,1.010 6 billion-7.995 4 billion yuan in Huaxing section,and 0.720 1 billion-4.643 1 billion yuan in Huangqiao section,respectively;(b)the weight of water quality in the Gaocheng and Huangqiao sections are the largest,followed by discharge and precipitation;(c)due to better water quality in Huaxing section,the weight of flow is the largest,followed by water quality and precipitation;and(d)the weights of economic,evaporation and water consumption are smaller in each river section,which has little impact on the value of ecological baseflow.The order of annual discharge and precipitation in the reaches is Huangqiao>Huaxing>Gaocheng,but the order of ecological baseflow value is Huaxing>Huangqiao>Gaocheng,indicating that the value of ecological baseflow first depends on water quality,followed by discharge and precipitation.关键词
生态基流/价值/变异系数法/权重/变化/沙颍河上游干流Key words
ecological baseflow/value/coefficient of variation method/weight/variation/the upper main stream of Shaying River分类
环境科学引用本文复制引用
王国重,李中原,卢圆章,李永丽,杨丹,张继宇..基于变异系数法的沙颍河上游干流生态基流价值变化研究[J].水力发电,2025,51(1):11-15,5.基金项目
河南省科技攻关计划(GG202230) （GG202230）
