论文部分内容阅读
无论你是否感受到,人类正越来越干渴。根据联合国统计,全球淡水消耗量20世纪初以来增加了6~7倍。目前全球有14亿人缺乏安全清洁的饮用水,其中约3亿人生活在极度缺水状态中。估计到2025年,全世界将有近1/3的人缺水,波及40多个国家和地区。在淡水资源越来越紧缺的今天,一些研究人员把目光投向了几乎无人长期居住的极地,他们企图把极地海洋中的冰山拖回来,化成可以缓解干渴的淡水。冰川中蕴藏着大量淡水地球上水资源总量约14亿立方千米,但淡水储量仅占2.53%,而其中的68.7%又属于固体冰川,主要分布在极地地区。由于极地寒冷,海水
Whether you feel it or not, humans are getting thirsty. According to UN statistics, the global fresh water consumption has increased 6 to 7 times since the beginning of the 20th century. Currently, 1.4 billion people lack safe and clean drinking water around the world, and about 300 million of them live in extreme water shortages. It is estimated that by the year 2025, nearly one third of the world’s population will suffer from water shortages affecting more than 40 countries and regions. As freshwater resources become more scarce today, some researchers have turned their attention to the almost unmanaged polar regions that seek to drag icebergs in the polar oceans into freshwater that can relieve thirst. Large quantities of fresh water in glaciers The total water resources on Earth are about 1.4 billion km3, but freshwater reserves account for only 2.53%, of which 68.7% belong to solid glaciers and are mainly distributed in the polar regions. As the polar cold, sea water