Progress in Geography, Volume. 39, Issue 7, 1117(2020)

Influences of precipitation in the upper reaches of the Yangtze River on the key monthly inflow of the Three Gorges Reservoir

Ling ZHANG1, Jun ZHANG2、*, Liangmin DU1, and Yaqi Gao1
Author Affiliations
  • 1Wuhan Regional Climate Center, Wuhan 400074, China
  • 2Three Gorges Cascade Dispatching and Communication Center, Yichang 443000, Hubei, China
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    Figures & Tables(9)
    长江上游气象站点及三峡水库水文代表站分布Fig.1
    1961—2017年9月月均流量Fig.2 Monthly inflow of September, 1961-2017
    9月入库流量极大/小年(a)8月、(b)9月降水差异t检验注:数值代表不同显著性水平,阴影区代表通过0.05的显著性检验水平。Fig.3
    长江上游流域蓄水期降水的聚类分区示意图Fig.4
    各区不同累积天数面雨量与流量的相关系数随不同超前天数的变化注:图中填色及等值线为面雨量与流量的相关系数。Fig.5
    蓄水期6个区不同累积天数面雨量与流量的回归残差平方和随不同超前天数的变化注:图中填色及等值线为面雨量与流量回归的残差平方和。Fig.6
    2014年9月1—20日6个区面雨量及流量的变化曲线Fig.7
    • Table 1.

      6个分区范围及对应站点数

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      Table 1.

      6个分区范围及对应站点数

      分区范围站点数
      I区嘉陵江流域南部23
      II区金沙江上游、岷沱江中北部、嘉陵江北部64
      III区重庆—宜昌42
      IV区乌江46
      V区宜宾—重庆37
      VI区金沙江流域中下游59
    • Table 2.

      流量与各区不同累积天数的面雨量Lasso回归中最小λ值对应的归一化回归系数

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      Table 2.

      流量与各区不同累积天数的面雨量Lasso回归中最小λ值对应的归一化回归系数

      分区累积天数/d
      12345678910
      I889481789091100100100100
      II0000000000
      III10010010010010010088716363
      IV74685352515045292323
      V9325057606357515258
      VI85544849515757565555
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    Ling ZHANG, Jun ZHANG, Liangmin DU, Yaqi Gao. Influences of precipitation in the upper reaches of the Yangtze River on the key monthly inflow of the Three Gorges Reservoir[J]. Progress in Geography, 2020, 39(7): 1117

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    Paper Information

    Category:

    Received: May. 9, 2019

    Accepted: --

    Published Online: Jan. 28, 2021

    The Author Email: ZHANG Jun (zhang_jun8@ctg.com.cn)

    DOI:10.18306/dlkxjz.2020.07.005

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