Variation of Water Resources Quantity and Its Impacts in China from 2001 to 2010
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Abstract:
Based on the comparative analysis of water resources quantities obtained from China Water Resource Bulletin between 2001 and 2010 and determined by the 45-year results of the second water resources investigation and evaluation, the variation of water resources quantity was analyzed in the last ten years of China. The results suggested that (1) the 45-year results are still representative according to the demonstration of the 45-year natural runoff and its extended results in the first-grade region of water resources; (2) as for the first-grade region of water resources, most area has less water except for Huaihe River Region and Northwestern River Region. The distribution of surface water resources determines the distribution of total water resources; and (3) in the last ten years, climate change and human activities worse the water resources situation in the north, resulting in an extended low flow period. The water resources distribution of less water in the north and much water in the south aggravates.
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