由于世界各国工农业生产的迅速发展、城市人口的剧增和人类对水这种自然资源的认识不足,使地球上有限的淡水资源在被大量开采利用的同时遭到了严重的浪费、污染和破坏。亿万人民的生活和健康状况、工农业生产的持续发展已经面临着前所未有的严重威胁。 Due to the rapid development of industrial and agricultural production in various countries in the world, the dramatic increase in urban population, and the lack of human understanding of natural resources such as water, the limited freshwater resources on the earth have been severely wasted, polluted, and destroyed while being exploited in large quantities. . The continuous growth of the lives and health of hundreds of millions of people and the continuous development of industrial and agricultural production are already facing unprecedented serious threats.