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地球表面水域面积占70％以上。按说世界上最不缺的应当是水,但绝大多数的水却是不能直接利用的海水。地球淡水资源量知多少?只占全部水量的3％,而其申能被人类利用的不到1％。事实已经证明,当前和今后困扰人类生存和发展的最大问题就是“水”。中国是世界上人口最多的国家,同时又是淡水资源相对贫乏的国度。未来的岁月,中国将面临非常严峻的“水危机”。因此,未雨绸缪,开源节流,向大海要淡水——海水淡化、工业和生活直接应用海水,至少在目前和今后相当长的一段时间内,是我们应当考虑的一种选择。
Earth’s surface water area accounts for more than 70%. It is said that the world’s most indispensable should be water, but the vast majority of water is not directly used by the sea. What is the amount of earth’s freshwater resources? Only 3% of the total amount of water, and its application less than 1% of human use. Facts have proved that the biggest problem that currently and in the future plagues the survival and development of mankind is “water.” China is the most populous country in the world and at the same time a relatively poor source of fresh water. In the coming years, China will face a very serious “water crisis.” Therefore, to take precautions, to cut expenditure and to cut expenditure, to apply seawater directly to the sea for fresh water desalination, industry and life, at least for a long period of time, at present and for the future, is an option that we should consider.