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Spatiotemporal patterns of urban thermal environment and comfort across 180 cities in summer under China’s rapid urbanization

BACKGROUND: China is considered as the largest and most rapidly urbanizing nation in the world. However, possible changes of urban thermal environment and comfort under the rapid urbanization in China still remain poorly understood at a national scale. METHODS: Based on the data collected from 180 c...

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Autores principales: Ren, Zhibin, Fu, Yao, Du, Yunxia, Zhao, Hongbo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6681799/
https://www.ncbi.nlm.nih.gov/pubmed/31396454
http://dx.doi.org/10.7717/peerj.7424
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author Ren, Zhibin
Fu, Yao
Du, Yunxia
Zhao, Hongbo
author_facet Ren, Zhibin
Fu, Yao
Du, Yunxia
Zhao, Hongbo
author_sort Ren, Zhibin
collection PubMed
description BACKGROUND: China is considered as the largest and most rapidly urbanizing nation in the world. However, possible changes of urban thermal environment and comfort under the rapid urbanization in China still remain poorly understood at a national scale. METHODS: Based on the data collected from 180 cities in 1990, 2005, and 2015 in China, the spatiotemporal patterns of urban thermal environment and comfort in summer and their relationships with urbanization variables were investigated in this study. RESULTS: Our results indicate that urban thermal environment has changed greatly during the 25 years. Furthermore, the changes of urban climate in different regions are inconsistent. The Physiological Equivalent Temperature (PET) at most cities (81%) in China increased from 1990 to 2015, which suggested that urban thermal comfort in China was also deteriorating during the 25 years. However, while the PET of some cities in China began to decrease from 2005 to 2015, there were still 33% of cities that had positive trends,which mainly located in North region. Urbanization resulted in a significant influence on urban climate. Compared to southern cities, northern cities were more sensitive to urbanization impact. The most important contribution to increasing of PET for urbanization variables is gross domestic product, followed by urban population. The analysis results reveal changing patterns of urban thermal comfort in China during summer season. It can help urban government and managers improve urban thermal environment and comfort.
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spelling pubmed-66817992019-08-08 Spatiotemporal patterns of urban thermal environment and comfort across 180 cities in summer under China’s rapid urbanization Ren, Zhibin Fu, Yao Du, Yunxia Zhao, Hongbo PeerJ Climate Change Biology BACKGROUND: China is considered as the largest and most rapidly urbanizing nation in the world. However, possible changes of urban thermal environment and comfort under the rapid urbanization in China still remain poorly understood at a national scale. METHODS: Based on the data collected from 180 cities in 1990, 2005, and 2015 in China, the spatiotemporal patterns of urban thermal environment and comfort in summer and their relationships with urbanization variables were investigated in this study. RESULTS: Our results indicate that urban thermal environment has changed greatly during the 25 years. Furthermore, the changes of urban climate in different regions are inconsistent. The Physiological Equivalent Temperature (PET) at most cities (81%) in China increased from 1990 to 2015, which suggested that urban thermal comfort in China was also deteriorating during the 25 years. However, while the PET of some cities in China began to decrease from 2005 to 2015, there were still 33% of cities that had positive trends,which mainly located in North region. Urbanization resulted in a significant influence on urban climate. Compared to southern cities, northern cities were more sensitive to urbanization impact. The most important contribution to increasing of PET for urbanization variables is gross domestic product, followed by urban population. The analysis results reveal changing patterns of urban thermal comfort in China during summer season. It can help urban government and managers improve urban thermal environment and comfort. PeerJ Inc. 2019-08-02 /pmc/articles/PMC6681799/ /pubmed/31396454 http://dx.doi.org/10.7717/peerj.7424 Text en ©2019 Ren et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Climate Change Biology
Ren, Zhibin
Fu, Yao
Du, Yunxia
Zhao, Hongbo
Spatiotemporal patterns of urban thermal environment and comfort across 180 cities in summer under China’s rapid urbanization
title Spatiotemporal patterns of urban thermal environment and comfort across 180 cities in summer under China’s rapid urbanization
title_full Spatiotemporal patterns of urban thermal environment and comfort across 180 cities in summer under China’s rapid urbanization
title_fullStr Spatiotemporal patterns of urban thermal environment and comfort across 180 cities in summer under China’s rapid urbanization
title_full_unstemmed Spatiotemporal patterns of urban thermal environment and comfort across 180 cities in summer under China’s rapid urbanization
title_short Spatiotemporal patterns of urban thermal environment and comfort across 180 cities in summer under China’s rapid urbanization
title_sort spatiotemporal patterns of urban thermal environment and comfort across 180 cities in summer under china’s rapid urbanization
topic Climate Change Biology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6681799/
https://www.ncbi.nlm.nih.gov/pubmed/31396454
http://dx.doi.org/10.7717/peerj.7424
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