Climate Change Research ›› 2014, Vol. 10 ›› Issue (2): 127-134.doi: 10.3969/j.issn.1673-1719.2014.02.007

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Impacts of Precipitation Change on the Runoff Change in the Fujiang River Basin During the Period of 1951-2012

Wang Yong1, Xu Hongmei2, Cheng Bingyan1, Huang Dapeng2, Tan Yunting3, Luo Yong4   

  1. 1 Chongqing Climate Center, Chongqing 401147, China; 
    2 National Climate Center, China Meteorological Administration, Beijing 100081, China; 
    3 Fengdu Meteorological Bureau, Chongqing 408200, China;
    4 Ministry of Education Key Laboratory for Earth System Modeling, Center for Earth System Science, Beijing 100084, China
  • Received:2013-11-25 Revised:2014-01-20 Online:2014-03-30 Published:2014-03-30
  • Contact: Yong Wang

Abstract: The Mann-Kendall test has been applied to detect the trends and abrupt changes of the precipitation and runoff for the Fujiang River basin. The contribution of precipitation to the runoff change has been estimated with the rate of change in the slope of cumulative amount. The results indicate that the annual precipitation and runoff have decreased significantly during the period of 1951-2012, especially after the 1990s, and the abrupt changes of the annual precipitation and runoff both occurred in 1968. The linear relationship between the annual runoff and precipitation is good, but poor in winter. The decrease of runoff could be attributed to precipitation change (71.4%) and human activities (28.6%).

Key words: precipitation, runoff, Fujiang River basin

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