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按照国际标准,人均2000立方米以下即为严重缺水,难以满足生态平衡要求;人均1000立方米以下则为满足人类生存需要的下限。而北京的水资源人均占有量仅为严重缺水线的15%;水资源下限的30%,而且随着气候变迁和用水量的增加,形势越来越严峻。北京已成为世界上缺水最严重的城市之一。北京市现在年用水量为41.2亿吨,来水量仅为18亿吨,年亏水23.2亿吨。由于气候干旱和超量用水,北京唯一的饮用水来源密云水库水位下降了六七米。400亿立方米的蓄水量,到2000年10月只剩下16亿立方米,仅够北京用一年。大量超采地下水,使北京平原地区形成了2100平方公里的漏斗区,水位已降到海平面以下五六十米,统计数字表
In accordance with international standards, per capita 2000 cubic meters or less is a serious water shortage, it is difficult to meet the ecological balance requirements; below 1000 cubic meters per capita is to meet the needs of human life, the lower limit. In Beijing, water resources per capita account for only 15% of the serious water scarce and 30% of the water resources lower limit. As the climate change and water consumption increase, the situation becomes more and more serious. Beijing has become one of the most water-scarred cities in the world. Beijing now has an annual water consumption of 4.12 billion tons, a water volume of only 1.8 billion tons and an annual water loss of 2.22 billion tons. Due to the arid climate and excessive water use, the water level in Miyun Reservoir, the only source of drinking water in Beijing, dropped by 67 meters. 40 billion cubic meters of water storage, by October 2000 only 1.6 billion cubic meters, only Beijing with one year. A large number of over-exploitation of groundwater, so that the formation of the Beijing Plain area of 2100 square kilometers of funnel area, the water level has dropped below sea level fifty or six meters, the statistics table