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据世界气象组织的统计,自本世纪初以来,人类对淡水的需求急剧增加。从1990年到1995年,水的消耗增长了6倍,比世界人口增长速度快两倍。目前,世界上每6个人中就有一人享用不到洁净水,到2025年,世界人口将从目前的57亿增加到83亿,对水的需求还将急剧增长。1997年3月在摩洛哥中部古城马拉喀什举行的第一届世界水资源论坛会,通过了一项《宣言》,呼吁国际社会共同努力,要合理使用,管理和保护淡水资源。
According to the World Meteorological Organization, the human demand for fresh water has risen sharply since the beginning of this century. From 1990 to 1995, water consumption increased six-fold, more than double the world population. Currently, every sixth person in the world has access to no clean water and by 2025 the world population will increase from the current 5.7 billion to 8.3 billion. The demand for water will also increase dramatically. In March 1997, the first World Water Forum held in Marrakesh, the central city of Morocco, adopted a Declaration calling on the international community to make concerted efforts to rationally use, manage and protect freshwater resources.