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 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
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%).
王勇,许红梅,程炳岩,黄大鹏,谭云廷,罗勇. 1951—2012年降水变化对涪江流域径流的影响[J]. 气候变化研究进展, 2014, 10(2): 127-134.
Wang Yong, Xu Hongmei, Cheng Bingyan, Huang Dapeng, Tan Yunting, Luo Yong. Impacts of Precipitation Change on the Runoff Change in the Fujiang River Basin During the Period of 1951-2012. Climate Change Research, 2014, 10(2): 127-134.