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水土流失是世界各国尤其是发展中国家面临的严重问题。有关资料表明,如果将我国黄河每年流失的泥沙,砌成一米见方的土墙,可绕地球27圈。难怪中外人士惊呼,黄河流失的不是泥土,而是鲜血。长江,作为世界第三大河流,早已为世人所知,而被称之为世纪工程的三峡工程的兴建,又使其知名度大增。早在70年代末期,长江水质就日渐浑浊,泥沙量增大,已初露步黄河后尘之端睨。许多专家学者呼吁,对长江趋黄之势不能等闲视之,应未雨绸缪,及早根治。
Soil and water loss is a serious problem facing all countries in the world, especially developing countries. Relevant data show that if the annual loss of sediment from the Yellow River in our country is made into a square meter of earth wall, it can circle 27 times around the earth. No wonder Chinese and foreign people exclaimed, the loss of the Yellow River is not soil, but blood. As the third largest river in the world, the Yangtze River has long been known to the world, and the construction of the Three Gorges Project, known as the Century Project, has greatly increased its popularity. As early as the late 1970s, the water quality of the Yangtze River became increasingly turbid and the amount of sediment increased. This was the beginning of the Yellow River dust trail. Many experts and scholars call for the trend of yellowing the Yangtze River can not be ignored, should take precautions, cure as soon as possible.