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水是当今世界最宝贵的资源之一,水资源缺乏已成为日益突出的全球性问题。中国以全球7%的水资源养活着全世界21%的人口,是一个严重缺水的国家,人均水资源量不足2200立方米,约为世界平均水平的30%。在我国600多座城市中,有400多个城市缺水,108个城市严重缺水,城市缺水总量达60亿立方米,每年因缺水损失工业产值上千亿元。据统计,“十五”期间,我国农田受旱面积年均达3.85亿亩,平均每年因旱减产350亿公斤。全国农村有3.2亿饮水不安全。由于人口增长和现代化建设速度快,各种资源特别是不可再生的生命之源——水加速消耗,且水资源利用方式粗放,科技含量不高,用水效率低,浪费现象比较普遍;同时,水资源
Water is one of the most precious resources in the world today. The lack of water has become an increasingly prominent global problem. With 21% of the world’s population with 7% of the world’s water resources, China is a seriously water-scarce country with less than 2,200 cubic meters of water per capita, about 30% of the world average. In more than 600 cities in our country, more than 400 cities are short of water and 108 cities are seriously short of water. The total water shortage in cities amounts to 6 billion cubic meters. Each year, the industrial output value due to lack of water amounts to hundreds of billions of yuan. According to statistics, during the “Tenth Five-Year Plan” period, the area of drought-hit farmland in China has reached an average of 385 million mu each year, with an average annual reduction of 35 billion kilograms due to drought. There are 320 million people in the country’s rural areas drinking unsafe water. Due to the rapid population growth and modernization construction, all kinds of resources, especially non-renewable sources of life, are accelerating consumption of water, extensive use of water resources, low scientific and technological content, low water use efficiency and waste. In addition, water Resources