Severe flood probability on the middle Changjiang (Yangtze River) after completion of the Three Gorges Dam

被引:4
|
作者
Shankman, David [1 ]
Lai, Xijun [2 ]
机构
[1] Univ Alabama, Tuscaloosa, AL USA
[2] Chinese Acad Sci, Nanjing Inst Geog & Limnol, Key Lab Watershed Geog Sci, Nanjing, Peoples R China
基金
中国国家自然科学基金;
关键词
River-lake system; Yangtze River; flood; water safety; Dam impact; ENSO (El Nino; southern oscillation); Three Gorges Dam; CHINA; LAKE;
D O I
10.3389/feart.2022.1006004
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
A major justification for building the Three Gorges Dam on the Changjiang is flood control. The dam can reduce peak discharge during severe floods. These floods, however, cannot be prevented by operation of the Three Gorges Dam alone. During the most severe floods abnormally high rainfall occurs throughout the Changjiang basin. The Three Gorges Dam can only affect discharge from the upper basin. Large tributaries on the middle Changjiang are unaffected by the dam. The cumulative impact of high discharge from large tributaries on the middle Changjiang increase flood severity with distance downstream. Also, Changjiang-lake interaction is affected by decreasing volume of Poyang and Dongting Lakes that occurred during the past few decades. These are the largest freshwater lakes in China. As a result of reduced floodwater storage capacity during summer high discharge periods, tributaries flow into the lakes with a higher base level than previously occurred. Instead of Changjiang back flowing into the lakes as previously expected during major floods, high Changjiang discharge occurs at the same time as high tributary discharge that increases peak river stage.
引用
收藏
页数:9
相关论文
共 50 条
  • [1] An approach on flood control strategy in middle and lower reaches of Yangtze River after the completion of the Three Gorges Dam project
    Chen, Jin
    [J]. Shuikexue Jinzhan/Advances in Water Science, 2014, 25 (05): : 745 - 751
  • [2] Response of the sediment geochemistry of the Changjiang River(Yangtze River) to the impoundment of the Three Gorges Dam
    Hao Wang
    Xiangbin Ran
    Jingxi Li
    Jun Liu
    Wentao Wu
    Menglu Li
    Jiaye Zang
    [J]. Journal of Environmental Sciences, 2019, 83 (09) - 173
  • [3] Response of the sediment geochemistry of the Changjiang River (Yangtze River) to the impoundment of the Three Gorges Dam
    Wang, Hao
    Ran, Xiangbin
    Li, Jingxi
    Liu, Jun
    Wu, Wentao
    Li, Menglu
    Zang, Jiaye
    [J]. JOURNAL OF ENVIRONMENTAL SCIENCES, 2019, 83 : 161 - 173
  • [4] Response of the sediment geochemistry of the Changjiang River(Yangtze River) to the impoundment of the Three Gorges Dam
    Hao Wang
    Xiangbin Ran
    Jingxi Li
    Jun Liu
    Wentao Wu
    Menglu Li
    Jiaye Zang
    [J]. Journal of Environmental Sciences, 2019, (09) : 161 - 173
  • [5] Detection of the Three Gorges Dam influence on the Changjiang (Yangtze River) submerged delta
    Dai, Zhijun
    Liu, James T.
    Wei, Wen
    Chen, Jiyu
    [J]. SCIENTIFIC REPORTS, 2014, 4
  • [6] Detection of the Three Gorges Dam influence on the Changjiang (Yangtze River) submerged delta
    Zhijun Dai
    James T. Liu
    Wen Wei
    Jiyu Chen
    [J]. Scientific Reports, 4
  • [7] Implications of flow control by the Three Gorges Dam on sediment and channel dynamics of the middle Yangtze (Changjiang) River, China
    Chen, Zhongyuan
    Wang, Zhanghua
    Finlayson, Brian
    Chen, Jing
    Yin, Daowei
    [J]. GEOLOGY, 2010, 38 (11) : 1043 - 1046
  • [8] Dam impacts on the Changjiang (Yangtze) River sediment discharge to the sea: The past 55 years and after the Three Gorges Dam
    Yang, Z
    Wang, H
    Saito, Y
    Milliman, JD
    Xu, K
    Qiao, S
    Shi, G
    [J]. WATER RESOURCES RESEARCH, 2006, 42 (04)
  • [9] Yangtze River and the Three Gorges dam
    Casafont, Luis Berga
    Cordoba, Jesus Yague
    Gomis, Gaspar Zaragoza
    Gimenez, Enrique Cifres
    [J]. Revista de Obras Publicas, 1998, (3372): : 39 - 50
  • [10] Will river erosion below the Three Gorges Dam stop in the middle Yangtze?
    Lai, X.
    Yin, D.
    Finlayson, B. L.
    Wei, T.
    Li, M.
    Yuan, W.
    Yang, S.
    Dai, Z.
    Gao, S.
    Chen, Z.
    [J]. JOURNAL OF HYDROLOGY, 2017, 554 : 24 - 31