水科学进展2025，Vol.36Issue(3)：481-492,12.DOI:10.14042/j.cnki.32.1309.2025.03.011
三峡水利枢纽与入库支流对三峡库区水沙演变特征的影响
Impacts of the Three Gorges Water Hub Project and tributary inflows on the evolution of water and sediment characteristics in the Three Gorges Reservoir area
摘要
Abstract
The evolution of water and sediment dynamics is a key indicator of hydrological processes and ecological transformations within river basins.A comprehensive investigation into the mechanisms governing water and sediment transport is essential for elucidating the underlying patterns of their transformation.This study analyzes the characteristics of water and sediment evolution in the Three Gorges Reservoir area using observational data from major hydrological stations from 1955 to 2023.It delineates the influences of the Jialingjiang River,Wujiang River,and the Three Gorges Water Hub Project on this evolution,and establishes a contribution model for quantitative assessment.Results indicate that the Jialingjiang and Wujiang rivers are important contributors to the inflow of water and sediment into the Three Gorges Reservoir,accounting for approximately 29.4％and 30.2％of the total input,respectively.Their respective contributions to changes in water and sediment flux are estimated at 54.1％and 33.0％,while their influence on periodic variations is 30.0％and 46.7％.The regulatory impact of the Three Gorges Water Hub Project on water and sediment processes varies markedly across different stages:the construction phase contributed approximately 58.9％to changes in the water-sediment relationship,whereas the operational phase accounted for approximately 91.1％.However,this influence declined to 78.3％after 2012 due to the effects of upstream cascade reservoirs.These findings offer scientific support for understanding basin-scale water-sediment processes,optimizing regulation strategies for large-scale hydraulic projects,and evaluating their environmental implications.关键词
水沙特征/入库支流/时空演变/贡献分析/三峡水利枢纽Key words
water and sediment characteristics/inflow tributaries/spatiotemporal evolution/contribution analysis/Three Gorges Water Hub Project分类
建筑与水利引用本文复制引用
骆义峡,唐小娅,段恒轶,陈吉龙,吴胜军..三峡水利枢纽与入库支流对三峡库区水沙演变特征的影响[J].水科学进展,2025,36(3):481-492,12.基金项目
国家自然科学基金项目(42207104) （42207104）
重庆市水利局项目(CQS23C01036) The study is financially supported by the National Natural Science Foundation of China(No.42207104)and the Water Resources Bureau of Chongqing Municipal,China(No.CQS23C01036). （CQS23C01036）
