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据有关资料显示,全球水资源总量中,人类不能直接利用的海洋咸水约占96.5%,剩下的3.5%的陆地淡水,绝大部分又被冰川、雪山、岩石、地下水和土壤水所占去。可供采用的河湖径流水和浅层地下水,仅占地球淡水总量的0.35%。预计到2025年,全世界将有2/3的人口处于严重缺水的局面。解决水资源短缺的问题,既要开源,更应节流,
According to relevant data, among the total global water resources, about 96.5 percent of the ocean’s salt water cannot be used directly by humans. The remaining 3.5 percent of the land’s fresh water is mostly covered by glaciers, snow mountains, rocks, groundwater, and soil water. Take up. Available river and lake runoff and shallow groundwater account for only 0.35% of the total freshwater of the earth. It is estimated that by 2025, 2/3 of the world’s population will be in serious water shortages. To solve the problem of water shortage, it is necessary to open source and reduce expenditure.