SCIENTIA GEOGRAPHICA SINICA ›› 2011, Vol. 31 ›› Issue (11): 1389-1395.doi: 10.13249/j.cnki.sgs.2011.011.1389

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Interannual and Interdecadal Variations of Extreme Hydrological Events and Response to Climate Change in Xinjiang

SUN Gui-li, CHEN Ya-ning, LI Wei-hong   

  1. 1. Key Laboratory of Oasis Ecology and Desert Environment, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China;
    2. College of Foresty and Horticulture, Agricultural University of Xinjiang, Urumqi, Xinjiang 830052, China
  • Received:2011-01-22 Revised:2011-04-03 Online:1997-11-20 Published:1997-11-20

Abstract: Based on the data of extreme hydrological events in Xinjiang from 1901 to 2010, the interannual and interdecadal variations and the trend were studied with Mann-kendall abrupt test and Mann-kendall trend test. The results indicated that the frequency of extreme hydrological events exhibited an obvious increasing trend from the 19th to the 21th, significant particularly since 1970s. The changes are different in various areas. The frequency in Tacheng, Kuytun-Shihezi, Bozhou, Hamilton, Turpan, Bazhou, Kashi, Kezhou and Aksu in 1980s is approximate twice compared with that in 1990s. And the frequencies in these areas in 1980s were the highest, which is related to their lead hail hazards. The frequencies in other areas increased steady. The interannual and interdecadal variations are also not so identical, but they get to the maximum during the past 10 year. The trend of extreme hydrological events increases significantly, and is consistent with temperature and precipitation. The responses to the climate change are a little different during various extreme hydrological events.

CLC Number: 

  • P339