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保护城市水源是城市环保工作的重中之重。北京是个严重缺水的城市,七十年代,就有人呼吁北京缺水问题不解决,由此会有迁都的可能。过去,北京以地下水作为饮用水源,由于人口增加,连年超量开采,造成地下水位严重下降。从1984年开始,不得不饮用地表水。1985年,密云水库被确定为北京的饮用水源。现在,北京市城镇供水有一半来自这个水库。从某种意义来说,保护好密云水库,就等于保护了北京市一半人口的生命。
Protection of urban water sources is the top priority of urban environmental protection. Beijing is a city with severe water shortages. In the 1970s, some people called for the water shortage problem in Beijing not to be solved. As a result, the possibility of relocating the capital will be met. In the past, groundwater was used as a source of drinking water in Beijing. As a result of the population increase, it has been over-exploited in successive years, resulting in a serious decline in groundwater table. Since 1984, had to drink surface water. In 1985, Miyun Reservoir was identified as the source of drinking water in Beijing. Now, half of Beijing’s urban water supply comes from this reservoir. In a sense, protecting Miyun Reservoir is equivalent to protecting the life of half of Beijing’s population.