利用雨水收集系统解决景观用水问题

Solving Problems of Landscape Water Supply by Employing the Rainwater Collecting System

普遍硬质化的市政设施使得降雨快速流过城市,来不及向下渗透,补充地下水,因而导致了地下水位降低、地面下沉、海水入侵等诸多问题的产生,改变了城市局部乃至整体的自然水文循环。通过对中国古代以及国外雨水收集系统理论和实践的介绍和分析,认为有必要从城市规划选址与城市水系统相结合、规划设计时充分考虑利用雨水以及利用生态植物群落蓄积净化雨水这3个方面,综合解决园林景观用水问题,从而有助于实现城市自然生态系统的良性循环。

The hardened public facilities make the rainfall accelerate running over the city instead of penetrating into the underground, which leads to the decreasing of the underground water, descent of the ground and seawater invading. The geology and hydrology around the city have been changed dramatically. In order to realize urban ecosystem sound-cycle, it is proposed to resolve the problems of landscape water supply shortage by utilizing the rainwater collection system from three aspects, namely site selection combined with wetting system, utilizing the rain water in landscape architecture and decontaminating the storage rain water by planting arrangement, based on the rainfall collecting theories and practices of ancient China and foreign countries.