城市道路集雨灌溉中的水质及其污染物控制研究现状

Current Situation of Research on Water Quality and Pollution Control in Urban Road Rainfall Harvesting Irrigation

收集道路雨水径流作为路边绿化带灌溉补充水源,不仅能够提高雨水资源利用效率,而且可以大大降低城市绿地养护成本。道路径流水质特点以及污染物控制情况对道路集雨灌溉实现起着至关重要的作用。我国道路雨水水质及污染物控制研究尚处于初级阶段,应针对绿地对灌溉水质特殊要求,进一步开展雨水水质和污染物控制研究,以及雨水冲刷过后植被质量、土壤理化性质变化情况研究,并且根据道路绿化带乔灌草的不同特性开发相应节水灌溉措施。

Collecting road rainfall runoff for the irrigation of roadside green belts can not only enhance the rainwater utilization efficiency, but also reduce the cost of maintaining green land. The water quality characteristic of urban road runoff and the situation of pollution control play importan roles in the realization of the road rainfall harvesting irrigation. The research on water quality and pollution control of urban road runoff is at the primary stage at present in China. So, according to the special requirements of irrigation water quality for green land, further research on water quality and pollution control of rainfall, the change of vegetation quality and physical and chemical properties of soil after rainfall erosion, should be conducted. And different water saving irrigation methods should be developed according to the characteristics of tree, shrub and grass along roadside.