Climate effects on an inland alpine lake in Xinjiang, China over the past 40 years

查看全文 作　　者：HuiXia [1]CHAI;WeiMing [1]CHENG;ChengHu [1]ZHOU;ShangMin [2]ZHAO;HaiJiang [3]LIU

机构地区：[1]State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences;[2]Department of Surveying Mapping, College of Mining Technology, Taiyuan University of Technology;[3]China National Environmental Monitoring Center

出　　处：《Journal of Arid Land》索引2013年第5卷第2期,共11页

基　　金：financially supported by the National Science Technology Support Plan Project (2012BAH28B01-03);the National Natural Science Foundation of China(41171332);the National Science Technology Basic Special Project (2011FY110400-2);the China Postdoctoral Science Foundation (2012M510526) 摘　　要：Inland lakes are important water resources in arid and semiarid regions. Understanding climate effects on these lakes is critical to accurately evaluate the dynamic changes of water resources. This study focused on the changes in Sayram Lake of Xinjiang, China, and addressed the effects of climate fluctuations on the inland lake based on long-term sequenced remote sensing images and meteorological data from the past 40 years. A geographic information system (GIS) method was used to obtain the hypsometry of the basin area of Sayram Lake, and estimation methods for evaporation from rising temperature and water levels from increasing precipitation were proposed. Results showed that: (1) Areal values of Sayram Lake have increased over the past 40 years. (2) Both temperature and precipitation have increased with average increases of more than 1.8℃ and 82 mm, respectively. Variation of the water levels in the lake was consistent with local climate changes, and the areal values show linear relationships with local temperature and precipitation data. (3) According to the hypsometry data of the basin area, the estimated lake water levels increased by 2.8 m, and the water volume increased by 12.9×10 8 m3 over the past 40 years. The increasing area of Sayram Lake correlated with local and regional climatic changes because it is hardly affected by human activities. 关键词：内陆湖泊气候波动高山湖泊新疆中国区域气候变化流域面积半干旱地区

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Climate effects on an inland alpine lake in Xinjiang, China over the past 40 years

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