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Variation of Floods Characteristics and Their Responses to Climate and Human Activities in Poyang Lake, China

LI Xianghu ZHANG Qi

LI Xianghu, ZHANG Qi. Variation of Floods Characteristics and Their Responses to Climate and Human Activities in Poyang Lake, China[J]. 中国地理科学, 2015, 25(1): 13-25. doi: 10.1007/s11769-014-0724-z
引用本文: LI Xianghu, ZHANG Qi. Variation of Floods Characteristics and Their Responses to Climate and Human Activities in Poyang Lake, China[J]. 中国地理科学, 2015, 25(1): 13-25. doi: 10.1007/s11769-014-0724-z
LI Xianghu, ZHANG Qi. Variation of Floods Characteristics and Their Responses to Climate and Human Activities in Poyang Lake, China[J]. Chinese Geographical Science, 2015, 25(1): 13-25. doi: 10.1007/s11769-014-0724-z
Citation: LI Xianghu, ZHANG Qi. Variation of Floods Characteristics and Their Responses to Climate and Human Activities in Poyang Lake, China[J]. Chinese Geographical Science, 2015, 25(1): 13-25. doi: 10.1007/s11769-014-0724-z

Variation of Floods Characteristics and Their Responses to Climate and Human Activities in Poyang Lake, China

doi: 10.1007/s11769-014-0724-z
基金项目: Under the auspices of National Basic Research Program of China (No. 2012CB417003), National Natural Science Foundation of China (No. 41101024)
详细信息
    通讯作者:

    LI Xianghu. E-mail: lxh8010@163.com

Variation of Floods Characteristics and Their Responses to Climate and Human Activities in Poyang Lake, China

Funds: Under the auspices of National Basic Research Program of China (No. 2012CB417003), National Natural Science Foundation of China (No. 41101024)
More Information
    Corresponding author: LI Xianghu. E-mail: lxh8010@163.com
  • 摘要: The Poyang Lake is one of the most frequently flooded areas in China. Understanding the changing characteristics of floods as well as the affecting factors is an important prerequisite of flood disaster prevention and mitigation. The present study identified the characteristics variations of historical floods in the Poyang Lake and their tendencies based on the Mann-Kendall (M-K) test, and also investigated the related affecting factors, both from climate and human activities. The results revealed that the highest flood stages, duration as well as hazard coefficient of floods showed a long-term increasing linear trend during the last 60 years with the M-K statistic of 1.49, 1.60 and 1.50, respectively. And, a slightly increasing linear trend in the timing of the highest stages indicated the floods occurred later and later during the last six decades. The rainfall during the flood season and subsequent discharges of the Changjiang (Yangtze) River and runoff from the Poyang Lake Basin were mainly responsible for the severe flood situation in the Poyang Lake in the 1990s. In addition, the intensive human activities, including land reclamation and levee construction, also played a supplementary role in increasing severity of major floods. While, the fewer floods in the Poyang Lake after 2000 can be attributed to not only the less rainfall over the Poyang Lake Basin and low discharges of the Changjiang River during flood periods, but also the stronger influences of human activity which increased the floodwater storage of the Poyang Lake than before.
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出版历程
  • 收稿日期:  2013-10-08
  • 修回日期:  2014-01-15
  • 刊出日期:  2014-11-27

Variation of Floods Characteristics and Their Responses to Climate and Human Activities in Poyang Lake, China

doi: 10.1007/s11769-014-0724-z
    基金项目:  Under the auspices of National Basic Research Program of China (No. 2012CB417003), National Natural Science Foundation of China (No. 41101024)
    通讯作者: LI Xianghu. E-mail: lxh8010@163.com

摘要: The Poyang Lake is one of the most frequently flooded areas in China. Understanding the changing characteristics of floods as well as the affecting factors is an important prerequisite of flood disaster prevention and mitigation. The present study identified the characteristics variations of historical floods in the Poyang Lake and their tendencies based on the Mann-Kendall (M-K) test, and also investigated the related affecting factors, both from climate and human activities. The results revealed that the highest flood stages, duration as well as hazard coefficient of floods showed a long-term increasing linear trend during the last 60 years with the M-K statistic of 1.49, 1.60 and 1.50, respectively. And, a slightly increasing linear trend in the timing of the highest stages indicated the floods occurred later and later during the last six decades. The rainfall during the flood season and subsequent discharges of the Changjiang (Yangtze) River and runoff from the Poyang Lake Basin were mainly responsible for the severe flood situation in the Poyang Lake in the 1990s. In addition, the intensive human activities, including land reclamation and levee construction, also played a supplementary role in increasing severity of major floods. While, the fewer floods in the Poyang Lake after 2000 can be attributed to not only the less rainfall over the Poyang Lake Basin and low discharges of the Changjiang River during flood periods, but also the stronger influences of human activity which increased the floodwater storage of the Poyang Lake than before.

English Abstract

LI Xianghu, ZHANG Qi. Variation of Floods Characteristics and Their Responses to Climate and Human Activities in Poyang Lake, China[J]. 中国地理科学, 2015, 25(1): 13-25. doi: 10.1007/s11769-014-0724-z
引用本文: LI Xianghu, ZHANG Qi. Variation of Floods Characteristics and Their Responses to Climate and Human Activities in Poyang Lake, China[J]. 中国地理科学, 2015, 25(1): 13-25. doi: 10.1007/s11769-014-0724-z
LI Xianghu, ZHANG Qi. Variation of Floods Characteristics and Their Responses to Climate and Human Activities in Poyang Lake, China[J]. Chinese Geographical Science, 2015, 25(1): 13-25. doi: 10.1007/s11769-014-0724-z
Citation: LI Xianghu, ZHANG Qi. Variation of Floods Characteristics and Their Responses to Climate and Human Activities in Poyang Lake, China[J]. Chinese Geographical Science, 2015, 25(1): 13-25. doi: 10.1007/s11769-014-0724-z
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