水生态学杂志2018，Vol.39Issue(5)：1-6,6.DOI:10.15928/j.1674-3075.2018.05.001
三峡水库对坝下河流水文情势影响研究
Impact of Three Gorges Reservoir on the Downstream Hydrology of Yangtze River
摘要
Abstract
The Yichang gauging station of the Yangtze River is 44 km downstream of Three Georges Reservoir.In this study, changes in the hydrologic regime resulting from impoundment of Three Georges Reservoir was analyzed based on flow data from the gauging station from 1950 to 2016.Flow trends and hydrologic alteration were analyzed using the Mann-Kendall method with the Range of Variability Approach (RVA) and Indictors of Hydrologic Alteration (IHA).Changes in 32 IHA, D0 (degree of hydrologic alteration) and the Dundee Hydrological Regime Assessment Method (DHRAM) were employed to assess changes in river hydrology at the Yichang station.Results show that mean annual discharge decreased during the study period at a Mann-Kendall confidence level of 95％.Annual minimum flow increased, annual maximum flow decreased and the minimum flow occurred earlier in the year.The low pulse count was eliminated and the high pulse count and duration decreased slightly.Both rise and fall rates decreased and the number of flow reversals nearly doubled.Impoundment of Three Gorges Reservoir affected the hydrological regime at the Yichang station and, based on values of D0 and DHRAM, the alteration was moderate.关键词
三峡水库/水文情势/IHA参数/水文改变度Key words
Three Gorges Reservoir/hydrological regime/Indictors of Hydrologic Alteration (IHA)/hydrologic alteration分类
资源环境引用本文复制引用
王鸿翔,陈鼎新,李越,查胡飞,郭文献..三峡水库对坝下河流水文情势影响研究[J].水生态学杂志,2018,39(5):1-6,6.基金项目
国家自然科学基金项目(51679090,51609085,51779094) （51679090,51609085,51779094）
2016年度河南省高校科技创新人才支持计划(16HASTIT024) （16HASTIT024）
2016年河南省科技攻关项目(162102110015) （162102110015）
2015年度河南省基础与前沿技术研究计(152300410113). （152300410113）
