早在1972年,联合国第一次环境与发展大会就指出,“石油危机之后,下一个危机便是水”。1977年联合国大会进一步强调:“水,不久将成为一个深刻的社会危机”。1992年,一些专家指出,到21世纪,水、粮食和能源这三种资源中,最重要的是水。1997年联合国再次大声疾呼:“目前地区性的水危机可能预示着全球性危机的到来。”然而,这些骇世的警告并未引起 As early as 1972, the first UN Conference on Environment and Development pointed out that “the next crisis after the oil crisis is water.” The 1977 UN General Assembly further emphasized: “Water will soon become a profound social crisis.” In 1992, some experts pointed out that by the 21st century, the three most important sources of water, food and energy are water. Once again, the United Nations said loudly in 1997: “At the moment, the regional water crisis may signal a global crisis.” However, these abhorrent warnings did not arouse