基于ENVI-met的居住区绿地对PM_(2.5)消减作用的模拟研究——以保定市西苑南区为例  

ENVI-met simulation of PM_(2.5) reduction in residential green space——Taking Xiyuan South District of Baoding City as an example

作　　者：王可歆 聂庆娟[1] 王旭婧 孙芸浩 谢仲军 WANG Kexin;NIE Qingjuan;WANG Xujing;SUN Yunhao;XIE Zhongjun(College of Landscape Architecture and Tourism,Hebei Agricultural University,Baoding 071000,China;Institute of Industrial Development Planning,National Forestry and Grassland Administration,Beijing 100010,China)

机构地区：[1]河北农业大学园林与旅游学院,河北保定071000 [2]国家林业和草原局产业发展规划院,北京100010

出　　处：《林业与生态科学》2024年第3期342-356,共15页Forestry and Ecological Sciences

基　　金：河北省引进留学人员资助项目(C20190338)。

摘　　要：从景观绿化角度出发,以优化绿地形式减轻颗粒物污染为目标导向,以保定市行列式老旧小区——西苑南区为研究对象,使用ENVI-met微气候模拟软件,对居住区绿地种植形式进行优化模拟研究。结果表明,种植形式、乔木高度、乔灌木种植比例的变化都会影响绿地中PM_(2.5)的浓度分布。通过模拟得出对颗粒物消减效果最好的植物配置方案如下:(1)公共绿地采用乔木与灌木搭配围合绿地边界,中心设置硬质铺装的种植形式,选择国槐为主要乔木树种,乔灌木等比例种植;(2)宅旁绿地采用乔木与灌木搭配围合绿地边界,内部为草坪或低矮地被的种植形式,选择龙爪槐为主要乔木树种,乔灌木种植比例为1∶2;(3)东西走向的道路绿地选择旱柳为主要乔木树种,乔灌木种植比例为2∶1,南北走向的道路绿地选择臭椿为主要乔木树种,乔灌木等比例种植。From the perspective of landscape greening and with the goal of optimizing green space form to reduce particulate pollution,ENVI-met microclimate simulation software was used to optimize and simulate the planting form of residential green space in Xiyuan South District,a determinants old residential area in Baoding City.The results showed that the change of planting form,tree height and shrub planting ratio would affect the concentration distribution of PM_(2.5) in green space.Through the simulation,the best plant configuration scheme for particle reduction effect was as follows:(1)The public green space adopted the planting form of trees and shrubs to enclose the boundary of the green space and set hard pavement in the center.Sophora japonica was selected as the main tree species and the proportion of trees and shrubs was planted;(2)The green space next to the house adopted the planting form of trees and shrubs to enclose the boundary of the green space,and the interior was lawns or low ground cover.Styphnolobium japonicum“Pendula”was selected as the main tree species,and the planting ratio of trees and shrubs was 1∶2;(3)The east-west road green space chose Salix matsudana as the main tree species,and the proportion of trees and shrubs was 2∶1.The north-south green space chose Ailanthus altissima as the main tree species,and the proportion of trees and shrubs was planted.

关 键 词：老旧小区 PM_(2.5) 绿地形式 ENVI-met 数值模拟 

分 类 号：TU986.2[建筑科学—城市规划与设计]