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1 当前水资源危机及管理中存在的问题1.1 水资源危机1.1.1 水资源供需矛盾日趋加剧我国是一个水资源短缺的国家,且时空分布不均。近年来,我国持续遭受严重的干旱,旱灾发生的频率和影响的范围逐渐扩大,持续时间增长,造成的损失逐年增加,水资源短缺已成为我国经济社会发展的关键性因素。据报载,随着人口的增加和经济社会的快速发展,至2030年,我国人均水资源占有量将从现在的2200m~3降至1700～1800m~3,约70%的城市缺水,近
1 Current Water Crisis and Management Problems 1.1 Water Crisis 1.1.1 Increasing Contradiction between Water Supply and Demand China is a country with a shortage of water resources and is unevenly distributed in space and time. In recent years, China has suffered from severe drought. The frequency and impact of drought have gradually expanded. With the increase of duration and the increase of losses, the shortage of water resources has become the key factor in China’s economic and social development. It is reported that with the increase of population and the rapid economic and social development, by 2030, the water resources per capita of China will drop from the current 2,200 to 3,800 to 1,800 to 1,800 to 3, and about 70% of the cities are in short of water.