|Table of Contents|

Influence of spatial pattern of community park green space on PM2.5 and CO2 abatement(PDF)

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

Issue:
2023年04期
Page:
179-190
Research Field:
建筑学与城市规划
Publishing date:

Info

Title:
Influence of spatial pattern of community park green space on PM2.5 and CO2 abatement
Author(s):
MA Xina;  WANG Mengyao
(School of Architecture, Chang’an University, Xi’an 710061, Shaanxi, China)
Keywords:
community park green space;  spatial pattern;  PM2.5;  CO2;  abatement effect
PACS:
X511
DOI:
10.19815/j.jace.2023.02007
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 PM2.5 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 PM2.5 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 PM2.5 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 PM2.5 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 PM2.5 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 PM2.5 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 PM2.5 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 PM2.5 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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Last Update: 2023-07-01