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Journal of Geographical Sciences    2010, Vol. 20 Issue (4) : 599-612     DOI: 10.1007/s11442-010-0599-6
Water Resources |
Hydrology and water resources variation and its response to regional climate change in Xinjiang
XU Changchun1,2, CHEN Yaning1, YANG Yuhui1, HAO Xingming1, SHEN Yongping3
1. Key Laboratory of Oasis Ecology and Desert Environment, Xinjiang Institute of Ecology and Geography, CAS, Urumqi 830011, China;
2. Key Laboratory of Oasis Ecology, School of Resources and Environmental Science, Xinjiang University, Urumqi 830046, China;
3. Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou 730000, China
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Abstract  

Based on the surface runoff, temperature and precipitation data over the last 50 years from eight representative rivers in Xinjiang, using Mann-Kendall trend and jump detection method, the paper investigated the long-term trend and jump point of time series, the surface runoff, mean annual temperature and annual precipitation. Meanwhile, the paper analyzed the relationship between runoff and temperature and precipitation, and the flood frequency and peak flow. Results showed that climate of all parts of Xinjiang conformably has experienced an increase in temperature and precipitation since the mid-1980s. Northern Xinjiang was the area that changed most significantly followed by southern and eastern Xinjiang. Affected by temperature and precipitation variation, river runoff had changed both inter- annually and intra-annually. The surface runoff of most rivers has increased significantly since the early 1990s, and some of them have even witnessed the earlier spring floods, later summer floods and increasing flood peaks. The variation characteristics were closely related with the replenishment types of rivers. Flood frequency and peak flow increased all over Xinjiang. Climate warming has had an effect on the regional hydrological cycle.

Keywords hydrology and water resources      climate change      Xinjiang     
Fund:

National Natural Science Foundation of China, No.40671014; Knowledge Innovation Project of the Chinese Academy of Sciences, No.KZCX2-YW-127; Open Foundation of Key Laboratory of Oasis Ecology and Desert Environment, CAS, No.200901-07; Doctor Research Foundation of Xinjiang University, No.BS080131

Corresponding Authors: Chen Yaning, Professor, E-mail: chenyn@ms.xjb.ac.cn     E-mail: chenyn@ms.xjb.ac.cn
About author: Xu Changchun, Ph.D and Associate Professor, specialized in climate change and hydrology and water resources. E-mail: xcc0110@163.com
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XU Changchun
CHEN Yaning
YANG Yuhui
HAO Xingming
SHEN Yongping
Cite this article:   
XU Changchun,CHEN Yaning,YANG Yuhui, et al. Hydrology and water resources variation and its response to regional climate change in Xinjiang[J]. Journal of Geographical Sciences, 2010, 20(4): 599-612.
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http://www.geogsci.com/EN/10.1007/s11442-010-0599-6     OR     http://www.geogsci.com/EN/Y2010/V20/I4/599


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