关于发展节水型园林绿地的思考

针对北方城市水资源紧缺、城市园林绿地灌溉用水量逐年增加、城市生态环境用水供需矛盾突出的现实,分析了园林绿地灌溉的特点,指出当前园林绿地灌溉普遍存在方法落后、用水浪费的现象.提出应调整植物种植结构,发展节水、抗旱型绿地,积极推广先进适用的节水灌溉新技术、改善和提高绿地灌溉条件,严格规范灌溉系统的规划设计与施工,研究探索废污水回收利用和收集汛期降雨、灌溉城市绿地的新途径,以加强城市水资源综合利用,缓解北方城市用水紧张局面.

Discussion on Alleviating the Serious Shortage of Water Resource in Northern Cities of China and Developing the Water-Saving Garden and Green Spaces

Due to the serious shortage of water resources in the northern cities of China, the irrigation water amount used for city green spaces has increased year by year. Aiming at the severe contradiction between the water supply and demand of the urban ecological environment, this paper analyzed the characteristics of irrigation in gardens and green spaces. As a matter of fact, the irrigation methods of gardens and green spaces are very backward at present, and water is wasted universally. Therefore, some advanced methods are put forward, which includes adjusting the vegetation planting structure and develop the water-saving and drought-resistance type of green land. Meanwhile, the new advanced and available irrigation technologies should be developed, and the green land irrigation . conditions are also to be improved. To strengthen the multipurpose of city water resources and release the tension situation of the water demand in North cities, the planning, design and construction of irrigation system must be standardized strictly, and some new methods, such as to recycle wasted and polluted water, collect the rain during flood period to irrigation the green land, and so on, should be studied as soon as possible.