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Measuring the Urban Particulate Matter Island Effect with Rapid Urban Expansion

Rapid urbanization has posed numerous negative impacts on the environment, including fine particulate matter (PM(2.5)) pollution. However, quantitative investigations of the PM(2.5) concentration trends over an urban-rural gradient at the local level are still lacking. The urban particulate matter i...

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Detalles Bibliográficos
Autores principales: Cao, Yu, Fang, Xiaoqian, Wang, Jiayi, Li, Guoyu, Li, Yan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7432804/
https://www.ncbi.nlm.nih.gov/pubmed/32751824
http://dx.doi.org/10.3390/ijerph17155535
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author Cao, Yu
Fang, Xiaoqian
Wang, Jiayi
Li, Guoyu
Cao, Yu
Li, Yan
author_facet Cao, Yu
Fang, Xiaoqian
Wang, Jiayi
Li, Guoyu
Cao, Yu
Li, Yan
author_sort Cao, Yu
collection PubMed
description Rapid urbanization has posed numerous negative impacts on the environment, including fine particulate matter (PM(2.5)) pollution. However, quantitative investigations of the PM(2.5) concentration trends over an urban-rural gradient at the local level are still lacking. The urban particulate matter island (UPI) effect, representing the phenomenon that high particle concentrations in urban areas are gradually attenuated to surrounding areas, was adopted and modified in this paper to study the Hangzhou Bay area from 2000 to 2015. We found the following: (1) every urban area in the Hangzhou Bay area experienced rapid expansion, especially during 2000–2005; (2) more than half of the urban areas suffered UPI problems, and these urban areas had relatively high and stable UPI intensity (UPII) values, although the UPI footprint (UPIFP) values decreased with urban expansion; and (3) urban areas could be divided into three categories: plain areas, hilly areas and the junction of plains and hills, and the probability of the UPI effect varied significantly for different categories. This paper can compensate for the lack of research on the UPI effect at the local level and provide scientific evidence for air pollution control during urban agglomeration planning.
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spelling pubmed-74328042020-08-27 Measuring the Urban Particulate Matter Island Effect with Rapid Urban Expansion Cao, Yu Fang, Xiaoqian Wang, Jiayi Li, Guoyu Cao, Yu Li, Yan Int J Environ Res Public Health Article Rapid urbanization has posed numerous negative impacts on the environment, including fine particulate matter (PM(2.5)) pollution. However, quantitative investigations of the PM(2.5) concentration trends over an urban-rural gradient at the local level are still lacking. The urban particulate matter island (UPI) effect, representing the phenomenon that high particle concentrations in urban areas are gradually attenuated to surrounding areas, was adopted and modified in this paper to study the Hangzhou Bay area from 2000 to 2015. We found the following: (1) every urban area in the Hangzhou Bay area experienced rapid expansion, especially during 2000–2005; (2) more than half of the urban areas suffered UPI problems, and these urban areas had relatively high and stable UPI intensity (UPII) values, although the UPI footprint (UPIFP) values decreased with urban expansion; and (3) urban areas could be divided into three categories: plain areas, hilly areas and the junction of plains and hills, and the probability of the UPI effect varied significantly for different categories. This paper can compensate for the lack of research on the UPI effect at the local level and provide scientific evidence for air pollution control during urban agglomeration planning. MDPI 2020-07-31 2020-08 /pmc/articles/PMC7432804/ /pubmed/32751824 http://dx.doi.org/10.3390/ijerph17155535 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Cao, Yu
Fang, Xiaoqian
Wang, Jiayi
Li, Guoyu
Cao, Yu
Li, Yan
Measuring the Urban Particulate Matter Island Effect with Rapid Urban Expansion
title Measuring the Urban Particulate Matter Island Effect with Rapid Urban Expansion
title_full Measuring the Urban Particulate Matter Island Effect with Rapid Urban Expansion
title_fullStr Measuring the Urban Particulate Matter Island Effect with Rapid Urban Expansion
title_full_unstemmed Measuring the Urban Particulate Matter Island Effect with Rapid Urban Expansion
title_short Measuring the Urban Particulate Matter Island Effect with Rapid Urban Expansion
title_sort measuring the urban particulate matter island effect with rapid urban expansion
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7432804/
https://www.ncbi.nlm.nih.gov/pubmed/32751824
http://dx.doi.org/10.3390/ijerph17155535
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