Evaluating the 3D cooling performances of different vegetation combinations in the urban area

Vegetation has been considered as an effective strategy to combat the urban heat island effect. Most researches have focused on evaluating the cooling effect of trees in the urban thermal environment, while little attention has been paid to the cooling effect of the vegetation combinations. Moreover...

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Main Authors: Xing Tan, Jianjun Liao, Komi Bernard Bedra, Jiayu Li
Format: Article
Language:English
Published: Taylor & Francis Group 2022-05-01
Series:Journal of Asian Architecture and Building Engineering
Subjects:
Online Access:http://dx.doi.org/10.1080/13467581.2021.1903905
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author Xing Tan
Jianjun Liao
Komi Bernard Bedra
Jiayu Li
author_facet Xing Tan
Jianjun Liao
Komi Bernard Bedra
Jiayu Li
author_sort Xing Tan
collection DOAJ
description Vegetation has been considered as an effective strategy to combat the urban heat island effect. Most researches have focused on evaluating the cooling effect of trees in the urban thermal environment, while little attention has been paid to the cooling effect of the vegetation combinations. Moreover, most studies are focused on the horizontal cooling performance of plants, ignoring their vertical influence. Therefore, this study evaluates the 3D (horizontal and vertical) cooling performances of the three vegetation combination scenarios in the urban area using the ENVI-met model. The study indicates that the tree-grass (TG) combination has the best 3D cooling effect, followed by the tree-shrub-grass (TSG) combination, while the shrub-grass (SG) combination has the weakest 3D cooling effect. Besides, it is economical to plant TSG combinations because fewer trees are needed than planting TG combinations. Therefore, the study recommends the tree-shrub-grass combination rather than TG or SG combination in urban areas to effectively improve the thermal environment. The study also shows that the relationship between increasing tree coverage and the resulting cooling effect is not linear. The results of this study can effectively guide the design of greening strategies in urban areas to improve thermal comfort.
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spelling doaj.art-f7d50bfd886843eebbdf7696ea1616722022-12-22T00:12:17ZengTaylor & Francis GroupJournal of Asian Architecture and Building Engineering1347-28522022-05-012131124113610.1080/13467581.2021.19039051903905Evaluating the 3D cooling performances of different vegetation combinations in the urban areaXing Tan0Jianjun Liao1Komi Bernard Bedra2Jiayu Li3University of South ChinaUniversity of South ChinaCentral South UniversityCentral South UniversityVegetation has been considered as an effective strategy to combat the urban heat island effect. Most researches have focused on evaluating the cooling effect of trees in the urban thermal environment, while little attention has been paid to the cooling effect of the vegetation combinations. Moreover, most studies are focused on the horizontal cooling performance of plants, ignoring their vertical influence. Therefore, this study evaluates the 3D (horizontal and vertical) cooling performances of the three vegetation combination scenarios in the urban area using the ENVI-met model. The study indicates that the tree-grass (TG) combination has the best 3D cooling effect, followed by the tree-shrub-grass (TSG) combination, while the shrub-grass (SG) combination has the weakest 3D cooling effect. Besides, it is economical to plant TSG combinations because fewer trees are needed than planting TG combinations. Therefore, the study recommends the tree-shrub-grass combination rather than TG or SG combination in urban areas to effectively improve the thermal environment. The study also shows that the relationship between increasing tree coverage and the resulting cooling effect is not linear. The results of this study can effectively guide the design of greening strategies in urban areas to improve thermal comfort.http://dx.doi.org/10.1080/13467581.2021.1903905envi-metvegetation combinationthermal comforturban heat island3d cooling effect
spellingShingle Xing Tan
Jianjun Liao
Komi Bernard Bedra
Jiayu Li
Evaluating the 3D cooling performances of different vegetation combinations in the urban area
Journal of Asian Architecture and Building Engineering
envi-met
vegetation combination
thermal comfort
urban heat island
3d cooling effect
title Evaluating the 3D cooling performances of different vegetation combinations in the urban area
title_full Evaluating the 3D cooling performances of different vegetation combinations in the urban area
title_fullStr Evaluating the 3D cooling performances of different vegetation combinations in the urban area
title_full_unstemmed Evaluating the 3D cooling performances of different vegetation combinations in the urban area
title_short Evaluating the 3D cooling performances of different vegetation combinations in the urban area
title_sort evaluating the 3d cooling performances of different vegetation combinations in the urban area
topic envi-met
vegetation combination
thermal comfort
urban heat island
3d cooling effect
url http://dx.doi.org/10.1080/13467581.2021.1903905
work_keys_str_mv AT xingtan evaluatingthe3dcoolingperformancesofdifferentvegetationcombinationsintheurbanarea
AT jianjunliao evaluatingthe3dcoolingperformancesofdifferentvegetationcombinationsintheurbanarea
AT komibernardbedra evaluatingthe3dcoolingperformancesofdifferentvegetationcombinationsintheurbanarea
AT jiayuli evaluatingthe3dcoolingperformancesofdifferentvegetationcombinationsintheurbanarea