随着城市化进程的加快和经济的快速发展,城市水资源面临着可持续利用的严峻挑战。工业的发展,人口的增加,大量水体被污染;为抽取河水,许多国家在河流上游建造水坝,改变了水流情况,使水的循环、自净受到了严重的影响。针对这一实际情况,我国各地提出了节水措施,以缓解水资源供需矛盾。 With the acceleration of urbanization and the rapid economic development, urban water resources are faced with the severe challenge of sustainable utilization. Industrial development, population increase, a large number of water bodies are polluted; in order to draw water, many countries in the upper reaches of the river to build dams, changing the water flow, so that the water cycle, self-purification has been seriously affected. In response to this actual situation, water saving measures have been put forward in various parts of China to ease the contradiction between supply and demand of water resources.