Journal of Geographical Sciences >
Hydrology and water resources variation and its response to regional climate change in Xinjiang
Received date: 2009-08-12
Revised date: 2009-10-16
Online published: 2010-08-15
Supported by
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
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.
Key words： hydrology and water resources; climate change; Xinjiang
XU Changchun, CHEN Yaning, YANG Yuhui, HAO Xingming, SHEN Yongping . Hydrology and water resources variation and its response to regional climate change in Xinjiang[J]. Journal of Geographical Sciences, 2010 , 20(4) : 599 -612 . DOI: 10.1007/s11442-010-0599-6
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