The Cooling Effect of Urban Green Spaces in Metacities: A Case Study of Beijing, China’s Capital

Urban green spaces have many vital ecosystem services such as air cleaning, noise reduction, and carbon sequestration. Amid these great benefits from urban green spaces, the cooling effects via shading and evapotranspiration can mitigate the urban heat island effect. The impact of urban green spaces...

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Autores principales:	Liang Yan, Wenxiao Jia, Shuqing Zhao
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	urban greening urban thermal environment mitigation strategies land surface temperature landscape configuration Science Q
Acceso en línea:	https://doaj.org/article/960091b89aed456f91d913c92a7abd55
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id	oai:doaj.org-article:960091b89aed456f91d913c92a7abd55
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spelling	oai:doaj.org-article:960091b89aed456f91d913c92a7abd552021-11-25T18:54:39ZThe Cooling Effect of Urban Green Spaces in Metacities: A Case Study of Beijing, China’s Capital10.3390/rs132246012072-4292https://doaj.org/article/960091b89aed456f91d913c92a7abd552021-11-01T00:00:00Zhttps://www.mdpi.com/2072-4292/13/22/4601https://doaj.org/toc/2072-4292Urban green spaces have many vital ecosystem services such as air cleaning, noise reduction, and carbon sequestration. Amid these great benefits from urban green spaces, the cooling effects via shading and evapotranspiration can mitigate the urban heat island effect. The impact of urban green spaces (UGSs) on the urban thermal environment in Beijing was quantified as a case study of metacities using four metrics: Land surface temperature (LST), cooling intensity, cooling extent, and cooling lapse. Three hundred and sixteen urban green spaces were extracted within the 4th ring road of Beijing from SPOT 6 satellite imagery and retrieved LST from Landsat 8 remote sensing data. The results showed that the cooling intensity of green spaces was generally more prominent in the areas with denser human activities and higher LST in this metacity. Vegetation density is always the dominant driver for the cooling effect indicated by all of the metrics. Furthermore, the results showed that those dispersive green spaces smaller than 9 ha, which are closely linked to the health and well-being of citizens, can possess about 6 °C of cooling effect variability, suggesting a great potential of managing the layout of small UGSs. In addition, the water nearby could be introduced to couple with the green and blue space for the promotion of cooling and enhancement of thermal comfort for tourists and residents. As the severe urban heating threatens human health and well-being in metacities, our findings may provide solutions for the mitigation of both the urban heat island and global climate warming of the UGS area customized cooling service.Liang YanWenxiao JiaShuqing ZhaoMDPI AGarticleurban greeningurban thermal environmentmitigation strategiesland surface temperaturelandscape configurationScienceQENRemote Sensing, Vol 13, Iss 4601, p 4601 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	urban greening urban thermal environment mitigation strategies land surface temperature landscape configuration Science Q
spellingShingle	urban greening urban thermal environment mitigation strategies land surface temperature landscape configuration Science Q Liang Yan Wenxiao Jia Shuqing Zhao The Cooling Effect of Urban Green Spaces in Metacities: A Case Study of Beijing, China’s Capital
description	Urban green spaces have many vital ecosystem services such as air cleaning, noise reduction, and carbon sequestration. Amid these great benefits from urban green spaces, the cooling effects via shading and evapotranspiration can mitigate the urban heat island effect. The impact of urban green spaces (UGSs) on the urban thermal environment in Beijing was quantified as a case study of metacities using four metrics: Land surface temperature (LST), cooling intensity, cooling extent, and cooling lapse. Three hundred and sixteen urban green spaces were extracted within the 4th ring road of Beijing from SPOT 6 satellite imagery and retrieved LST from Landsat 8 remote sensing data. The results showed that the cooling intensity of green spaces was generally more prominent in the areas with denser human activities and higher LST in this metacity. Vegetation density is always the dominant driver for the cooling effect indicated by all of the metrics. Furthermore, the results showed that those dispersive green spaces smaller than 9 ha, which are closely linked to the health and well-being of citizens, can possess about 6 °C of cooling effect variability, suggesting a great potential of managing the layout of small UGSs. In addition, the water nearby could be introduced to couple with the green and blue space for the promotion of cooling and enhancement of thermal comfort for tourists and residents. As the severe urban heating threatens human health and well-being in metacities, our findings may provide solutions for the mitigation of both the urban heat island and global climate warming of the UGS area customized cooling service.
format	article
author	Liang Yan Wenxiao Jia Shuqing Zhao
author_facet	Liang Yan Wenxiao Jia Shuqing Zhao
author_sort	Liang Yan
title	The Cooling Effect of Urban Green Spaces in Metacities: A Case Study of Beijing, China’s Capital
title_short	The Cooling Effect of Urban Green Spaces in Metacities: A Case Study of Beijing, China’s Capital
title_full	The Cooling Effect of Urban Green Spaces in Metacities: A Case Study of Beijing, China’s Capital
title_fullStr	The Cooling Effect of Urban Green Spaces in Metacities: A Case Study of Beijing, China’s Capital
title_full_unstemmed	The Cooling Effect of Urban Green Spaces in Metacities: A Case Study of Beijing, China’s Capital
title_sort	cooling effect of urban green spaces in metacities: a case study of beijing, china’s capital
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/960091b89aed456f91d913c92a7abd55
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The Cooling Effect of Urban Green Spaces in Metacities: A Case Study of Beijing, China’s Capital

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