Advances in Earth Science ›› 2021, Vol. 36 ›› Issue (1): 1-8. doi: 10.11867/j.issn.1001-8166.2021.003

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Flood Control Strategies for the River Basin Enlightened by the 2020 Upper Yangtze River Floods

Jun XIA 1( ), Jin CHEN 1 , 2, Gangsheng WANG 1, Dandong CHENG 3   

  1. 1.State Key Laboratory of Water Resources and Hydropower Engineering Sciences,Wuhan University,Wuhan 430072,China
    2.Yangtze River Academy of Sciences,Changjiang Water Resources Commission;of the Ministry of Water Resources,Wuhan 430015,China
    3.College of Urban and Environmental Sciences,Northwest University,Xi'an 710127,China
  • Received:2020-11-26 Revised:2021-01-07 Online:2021-03-19 Published:2021-03-19
  • About author:XIA Jun (1954-), male, Xiaogan City, Hubei Province, Professor, Academician of the Chinese Academy of Sciences. Research areas include hydrology and water resources tesearch. E-mail:
  • Supported by:
    the the National Natural Science Foundation of China "Interaction mechanism and countermeasures between the water cycle change of the Yangtze River Economic Belt and green development of typical urban agglomerations in the middle and lower reaches"(41890820)

Jun XIA, Jin CHEN, Gangsheng WANG, Dandong CHENG. Flood Control Strategies for the River Basin Enlightened by the 2020 Upper Yangtze River Floods[J]. Advances in Earth Science, 2021, 36(1): 1-8.

In 2020, the upstream and mid-downstream of the Yangtze River experienced massive floods, with the major mainstream floods occurring in the upper Yangtze River. In this study, we first reviewed the floods and their related losses, and then analyzed the characteristics of flooding disasters in the upper Yangtze River based on several catastrophic floods in history. Finally, we proposed the integrated strategies for flood defense and the control tactics for flash floods in the Yangtze River Basin in the new era. Our results show that the floods in the Jinsha River underlay the floods in the upper Yangtze River, whereas the flood peaks were primarily attributed to the inflow from the Minjiang River, the Jialing River and the mainstream interval. The co-occurrence of floods in the aforementioned three tributaries led to the mega-floods in the upper Yangtze River, which formed the foundation and an important component of the basin-wide floods. At present, flash floods and accompanied geological disasters caused the largest number of deaths, and the biggest property losses occurred in the middle-lower reaches and the lake areas. In the future, the embankments will remain the basis of flood control. The main means to improve flood control standards of urbans long the river will rely on the joint optimal operation of reservoirs. In addition, the most effective way to reduce flood losses will be non-engineering measures such as natural solutions that give space to floods.

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