基于ENVI-met模拟的不同用地类型居住小区绿地布局对PM_(2.5)的影响  

Effects of Green Space Layout on PM_(2.5) in Different Types of Residential Areas Based on ENVI-met Simulation

作　　者：戴菲[1] 邓瑛 陈明[1] 郭晓华[1,3] DAI Fei;DENG Ying;CHEN Ming;GUO Xiaohua(the School of Architecture and Urban Planning,Huazhong University of Science and Technology;at Wuhan Lyufeng Technology Engineering Co.,Ltd;in College of Horticulture and Gardening,Yangtze University)

机构地区：[1]华中科技大学建筑与城市规划学院 [2]武汉绿风科技工程有限公司 [3]长江大学园艺园林学院

出　　处：《风景园林》2021年第12期70-76,共7页Landscape Architecture

基　　金：国家自然科学基金(编号51908063,51778254);中央高校基本科研业务费专项资金(编号2020kfyXJJS104)。

摘　　要：居住区绿地作为城市绿地的主要组成肌理,对改善空气质量起着重要作用。首次将ENVI-met用于居住小区绿地布局与PM_(2.5)的模拟,选取武汉市典型的一类、二类、三类小区,定量分析不同草地、乔木布局对PM_(2.5)的影响。研究表明,集中型的草地布局、四周型的乔木布局能更有效降低小区PM_(2.5)浓度;分散型的草地布局、集中型的乔木布局最不利于消减PM2.5;四周型的乔木布局对阻滞道路上PM_(2.5)的扩散效果最佳。同种绿地布局形式下,二类小区的平均PM_(2.5)浓度最低,三类小区最高,PM_(2.5)空间分布在3类小区中也具有一定的差异。研究揭示了居住小区绿地布局对PM_(2.5)的影响机制,为小区绿地的规划设计实践提供一定参考。As the main component of urban green space,residential areas play an important role in improving air quality.For the first time,this research applies ENVI-met to simulate the green space layout and PM_(2.5)in residential areas.It makes quantitative analysis of the impacts of different grassland and tree layout on PM_(2.5).by selecting three typical residential areas,including Class Ⅰ(R1),Class Ⅱ(R2),and Class Ⅲ(R3)in the city of Wuhan.The results show that the centralized layout of grassland and surrounding layout of trees can effectively reduce PM_(2.5)concentrations in the residential area,while the dispersed layout of grassland and centralized layout of trees are the most unfavorable to reduce PM_(2.5).The surrounding layout of trees has the best effect on blocking PM_(2.5)diffusion on the roads.Under the same green space layout pattern,R2 has the lowest mean PM_(2.5)concentration,and R3 has the highest mean PM_(2.5)concentration.The spatial distribution of PM_(2.5)also has some differences among the three residential areas.The research reveals the influence mechanism of green space layout on PM_(2.5),and provides references for the planning and design of residential green space.

关 键 词：风景园林 居住小区 草地 乔木 数值模拟 PM_(2.5) 

分 类 号：TU986[建筑科学—城市规划与设计]