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

作　　者：王国重[1] 李中原 卢圆章 李永丽 杨丹 张继宇 WANG Guozhong;LI Zhongyuan;LU Yuanzhang;LI Yongli;YANG Dan;ZHANG Jiyu(Hydrology and Water Resources of Yellow River Scientific Research Institute,Zhengzhou 450004,Henan,China;Water Resources Immigration Affairs Center in Henan Province,Zhengzhou 450003,Henan,China;Hydrology and Water Resources Measurement and Reporting Center in Henan Province,Zhengzhou 450003,Henan,China;Zhoukou Branch of Hydrology and Water Resources Measurement and Reporting Center in Henan Province,Zhoukou 466000,Henan,China;Yellow River Henan Bureau,Zhengzhou 450003,Henan,China)

机构地区：[1]黄河水文水资源科学研究院,河南郑州450004 [2]河南省水利移民事务中心,河南郑州450003 [3]河南省水文水资源测报中心,河南郑州450003 [4]河南省周口水文水资源测报分中心,河南周口466000 [5]河南黄河河务局,河南郑州450003

出　　处：《水力发电》2025年第1期11-15,共5页Water Power

基　　金：河南省科技攻关计划(GG202230)。

摘　　要：为了辨识生态基流价值变化规律,以沙颍河上游干流告成段、化行段、黄桥段2008年~2021年降水、蒸发、流量、人均用水量、人均GDP、水质达标率数据,建立影响生态基流因子体系,根据变异系数法和2021年生态基流价值,研究河段生态基流价值年际变化。研究表明:告成段生态基流价值在0.483亿~4.726亿元波动、化行段在10.106亿~79.954亿元变化、黄桥段变化范围是7.201亿~46.431亿元;告成段、黄桥段水质因子所占权重最大,其次是流量、降水量因子;化行段因水质较优,流量因子所占权重最大,水质、降水量因子次之;经济、蒸发量、用水量因子在各河段的权重均较小,对生态基流价值的影响不大。河段年均流量与降水量排序为黄桥段>化行段>告成段,但生态基流价值排序为化行段>黄桥段>告成段,说明生态基流价值首先取决于水质,其次是流量与降水量。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,1.0106 billion-7.9954 billion yuan in Huaxing section,and 0.7201 billion-4.6431 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 

分 类 号：X143[环境科学与工程—环境科学] P333[天文地球—水文科学]