水是生命之源,又是人类社会经济可持续发展的重要支撑条件。在中国古代历史上,原始社会逐水而生;农耕文明的出现,人类选择居处、发展城市,都以取水方便排水便利为主要条件,绝大多数人群傍河而居,以适应水的自然时空分布,安排生活和生产;在人口持续增长和生产水平不断提高的情况 Water is the source of life and an important supporting condition for the sustainable development of human society and economy. In the ancient Chinese history, the primitive society was born out of water; the emergence of farming civilization, the choice of people to live in, the development of cities, the main conditions are to facilitate the drainage of water, the vast majority of people living in the river, to adapt to the natural water Space-time distribution, arrangements for life and production; continued growth in the population and rising production levels