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The water areas of Lake Qinghai in the past twenty years have been identified using NOAA/AVHRR satellite data. The results show that the area of Lake Qinghai has been decreased in these years, and the area of decreasing is mainly in the north of Lake Qinghai. To find out the climate elements which affect the area of Lake Qinghai, precipitation, temperature and evaporation in the region of Lake Qinghai are analyzed. The results show that increasing in temperature and evaporation, and the decreasing in precipitation are the main reasons for the decreasing in the area of Lake Qinghai.

Area changes of Lake Qinghai in the latest 20 years based on remote sensing study