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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

40卷

期数:

2023年04期

页码:

179-190

栏目:

建筑学与城市规划

出版日期:

2023-07-10

文章信息/Info

Title:

Influence of spatial pattern of community park green space on PM_2.5 and CO₂ abatement

文章编号:

1673-2049(2023)04-0179-12

作者:

马西娜,王梦媱

(长安大学 建筑学院,陕西 西安 710061)

Author(s):

MA Xina, WANG Mengyao

(School of Architecture, Chang’an University, Xi’an 710061, Shaanxi, China)

关键词:

社区公园绿地;  空间格局;  PM_2.5;  CO₂;  消减作用

Keywords:

community park green space;  spatial pattern;  PM_2.5;  CO₂;  abatement effect

分类号:

X511

DOI:

10.19815/j.jace.2023.02007

文献标志码:

A

摘要:

“双碳”目标影响下,公园绿地成为城市生态调控的重要要素之一,其中社区公园绿地对人居空间的“减污降碳,循环发展”有着重要影响。通过海量社区公园的数据筛选,提取绿地空间平面形态、三维形态以及景观格局等方面的6个典型指标,对PM_2.5消减量及CO₂消减量进行实测研究,分析社区公园绿地微气候环境的形成与维持机制,探讨绿地空间格局对PM_2.5与CO₂的消减影响。结果表明:不同空间形态绿地指标中,绿地斑块面积、斑块周长以及面积加权形状指数与PM_2.5消减量及CO₂消减量呈显著正相关; 社区公园绿地斑块面积在1×10⁴～6×10⁴ m²之间时,斑块面积消减作用显著,而斑块面积在6×10⁴～16×10⁴ m²之间时,消减作用减弱; 不同规模社区公园绿地对于PM_2.5及CO₂的消减边界距离均与斑块面积呈正相关,斑块面积在1×10⁴～2×10⁴ m²之间时,PM_2.5最大消减边界在301～303 m之间,CO₂最大消减边界在320～381 m之间; 斑块面积在3×10⁴～6×10⁴ m²之间时,PM_2.5最大消减边界在474～490 m之间,CO₂最大消减边界在470～480 m之间; 斑块面积为10×10⁴ m²及近20×10⁴ m²时,PM_2.5消减边界距离分别为560 m及729 m,CO₂消减边界距离分别为462 m及803 m; PM_2.5与CO₂的消减作用呈现出正向协同性,尤其随着斑块面积的增加,协同效应更加显著; 研究成果从城市设计的角度进一步完善城市多尺度空间的绿地景观格局理论,为城市绿地规划的可持续建设提供数据支撑。

Abstract:

Under the background of “double carbon”, community park green space, as a regulatory element of urban ecology, shoulders the target responsibility of “reducing pollution, reducing carbon and developing circularly” in urban space. Through the data screening of massive community parks, six typical indicators of green space plane shape, three-dimensional shape and landscape pattern were extracted, and the reduction of PM_2.5 and CO₂ was measured. The formation and maintenance mechanism of microclimate environment in community park green space was analyzed, and the influence of green space pattern on the reduction of PM_2.5 and CO₂ was discussed. The results show that among the green space indicators of different spatial forms, the green space patch area, patch perimeter and area-weighted shape index are significantly positively correlated with PM_2.5 reduction and CO₂ reduction. When the patch area of community park green space is 1×10⁴-6×10⁴ m², the reduction effect of patch area is significant, while the patch area is between 6×10⁴-16×10⁴ m², the reduction effect is weakened. The reduction boundary distance of PM_2.5 and CO₂ in community parks with different sizes is positively correlated with the patch area. When the patch area is 1×10⁴-2×10⁴ m², the maximum reduction boundary of PM_2.5 is between 301-303 m, and the maximum reduction boundary of CO₂ is between 320-381 m. When the patch area is 3×10⁴-6×10⁴ m², the maximum reduction boundary of PM_2.5 is between 474-490 m, and the maximum reduction boundary of CO₂ is between 470-480 m. At the large scale of 10×10⁴ m² and nearly 20×10⁴ m², the PM_2.5 reduction boundary distances are 560 m and 729 m, respectively, and the CO₂ reduction boundary distances are 462 m and 803 m, respectively. The reduction effect of PM_2.5 and CO₂ appear positive synergy, especially with the increase of area, the synergistic effect is more significant. The research results further improve the green landscape pattern theory of urban multi-scale space from the perspective of urban design, and provide data support for the sustainable construction of urban green space planning.

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备注/Memo

备注/Memo:

收稿日期:2023-02-02
基金项目:陕西省社会科学基金项目(2018S18); 国家自然科学基金项目(51908039); 中央高校基本科研业务费专项资金项目(300102411201,300102412601)
作者简介:马西娜(1986-),女,工学博士,副教授,硕士生导师,E-mail:maxina861005@126.com。

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更新日期/Last Update: 2023-07-01