| 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PM2.5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PM2.5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PM2.5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PM2.5的扩散效果最佳。同种绿地布局形式下，二类小区的平均PM2.5浓度最低，三类小区最高，PM2.5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PM2.5的影响机制，为小区绿地的规划设计实践提供一定参考。 |
| 关键词: 风景园林 居住小区 草地 乔木 数值模拟 PM2.5 |
| DOI：10.14085/j.fjyl.2021.12.0070.07 |
| 分类号:TU986 |
| 基金项目: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） |
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| Effects of Green Space Layout on PM2.5 in Different Types of Residential Areas Based on ENVI-met Simulation |
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DAI Fei1, DENG Ying2, CHEN Ming1, GUO Xiaohua3
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1.Huazhong University of Science and Technology;2.Wuhan Lyufeng Technology Engineering Co., Ltd;3.Yangtze University
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| Abstract: |
| 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 PM2.5 in residential areas. It makes quantitative analysis of the impacts of different grassland and tree layout on PM2.5. 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 PM2.5 concentrations in the residential area, while the dispersed layout of grassland and centralized layout of trees are the most unfavorable to reduce PM2.5. The surrounding layout of trees has the best effect on blocking PM2.5 diffusion on the roads. Under the same green space layout pattern, R2 has the lowest mean PM2.5 concentration, and R3 has the highest mean PM2.5 concentration. The spatial distribution of PM2.5 also has some differences among the three residential areas. The research reveals the influence mechanism of green space layout on PM2.5, and provides references for the planning and design of residential green space. |
| Key words: landscape architecture residential areas grassland tree numerical simulation PM2.5 |
| 引用本文: | 戴菲,邓瑛,陈明,郭晓华.基于ENVI-met模拟的不同用地类型居住小区绿地布局对PM2.5的影响[J].风景园林，2021，28（12）：70-76. |
| DAI Fei,DENG Ying,CHEN Ming,GUO Xiaohua.Effects of Green Space Layout on PM2.5 in Different Types of Residential Areas Based on ENVI-met Simulation[J].Landscape Architecture Journal, 2021, 28(12):70-76. |
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