海绵城市理念下道路植草沟植物的选择:以西咸新区为例

PLANT SELECTION OF GRASS SWALES IN ROAD GREENING OF SPONGE CITY CONSTRUCTION: A CASE STUDY OF XIXIAN NEW DISTRICT IN CHINA

植草沟作为海绵城市建设的一种工程措施被广泛应用于道路绿化中,但目前植草沟的植物选择多为感性的主观判断,缺乏量化的选取标准。以西安西咸新区海绵城市建设中道路植草沟的植物选择为例,采用层次分析法等,从生态适应性、功能特性、景观特性、经济效益4个方面构建了道路植草沟植物选择综合评价体系,筛选出18种道路植草沟优良品种,以及14种较优品种,为我国的道路植草沟植物的选择提供理论依据与案例参考。

With the acceleration of urbanization,city diseases tend to be on the rise in recent years.For instance,with the urban surface runoff increased,non-point source pollutants polluted rivers through drainage,and even water ecology became unbalanced.In order to solve this problem,China began to promote the construction of sponge cities.As an engineering measure of sponge city construction,grass swales are widely applied in road greening.However,the internal research on plant selection is not abundant,even subjective.The paper took the plants selection of grass swales in sponge city construction of Xixian New Area,in Shaanxi,China as an example to evaluate the suitability of the plants in grass swales.Based on the analytic hierarchy process,a comprehensive evaluation system was proposed in this paper on four aspects,ecological adaptability,functional characteristics,landscape characteristics and economic benefits.On that basis,eighteen good species and fourteen elite species of plants were selected to provide scientific references for the selection of grass swales in sponge city construction in China.