北京连续多年干旱,天津要从黄河调水,哈尔滨127条河水断流,微山湖成了牧场,白洋淀面临干涸,素有“江南水乡”之称的江浙一带也“齐声喊渴”……目前,我国600多个城市有400多个缺水,其中100多个严重缺水。一个危险的信号正在发出———城市,已经触及缺水警戒线。在这一背景下,提高用水效率、节约用水已经成为中国社会日益迫切的一个问题。目前,我国已开始着力建设节水型社会,并在三个不同类型的城市进行试点:地处西部干旱少雨的甘肃张掖,水资源相对丰沛的四川绵阳,严重缺水的辽宁大连。本期我们将对这三个不同类型城市的“节水之法”进行分析比较,以期为推进节水型城市建设提供一些借鉴。 Beijing has been in continuous drought for many years. Tianjin has to divert water from the Yellow River and 127 rivers in Harbin have been cut off. Weishan Lake has become a pasture. Baiyangdian is now facing a drought. It is also known as “Jiangnan Water Town” and also called “thirsty” in Jiangsu and Zhejiang provinces. At present, there are more than 400 water shortages in over 600 cities in China, of which over 100 are seriously water-scarce. A dangerous signal is being sent out - the city has hit the water scarcity line. In this context, improving water use efficiency and water conservation have become an increasingly pressing issue for Chinese society. At present, our country has started to build a water-saving society and piloted in three different types of cities: Zhangye in Gansu Province, which is arid and dry in the west, Mianyang, Sichuan Province, where water resources are relatively abundant, and Dalian, Liaoning Province, where water resources are scarce. In this issue, we will analyze and compare the “Water Saving Law” of these three different types of cities in order to provide some references for promoting the construction of water-saving cities.