The roles of residential greenness in the association between air pollution and health: a systematic review

While a growing body of literature suggests beneficial impacts of greenness on several health outcomes, relatively few studies have examined greenness as an effect modifier to impacts of air pollution on health outcomes, and results from the existing studies are inconclusive. We performed a comprehe...

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Main Authors: Ji-Young Son, Hayon Michelle Choi, Kelvin C Fong, Seulkee Heo, Chris C Lim, Michelle L Bell
Format: Article
Language:English
Published: IOP Publishing 2021-01-01
Series:Environmental Research Letters
Subjects:
Online Access:https://doi.org/10.1088/1748-9326/ac0e61
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author Ji-Young Son
Hayon Michelle Choi
Kelvin C Fong
Seulkee Heo
Chris C Lim
Michelle L Bell
author_facet Ji-Young Son
Hayon Michelle Choi
Kelvin C Fong
Seulkee Heo
Chris C Lim
Michelle L Bell
author_sort Ji-Young Son
collection DOAJ
description While a growing body of literature suggests beneficial impacts of greenness on several health outcomes, relatively few studies have examined greenness as an effect modifier to impacts of air pollution on health outcomes, and results from the existing studies are inconclusive. We performed a comprehensive, systematic review of previous literature on greenness as a potential effect modifier for associations between particulate matter air pollution and health. After initial screening of 7814 studies, we identified 20 eligible studies. We summarized findings on study characteristics based on several criteria: health outcome, air pollution exposure, source of air pollution data, study location, study period, and median year of the study period. We evaluated characteristics of effect modification by greenness on air pollution and health associations based on the number of greenness metrics applied, type of greenness metric (e.g. normalized difference vegetation index, land use), data source for greenness, and spatial resolution and buffer size. We also summarized evidence for effect modification by greenness based on strength and direction of evidence for each study and overall evidence of effect modification by greenness by several study characteristics. Our systematic review showed that only a limited number of studies have been conducted on greenness as an effect modifier for air pollution-health associations. We found differences in several study characteristics such as greenness assessment (e.g. greenness metrics applied, spatial resolution, and data sources) across studies. Collectively, the studies provide suggestive evidence for the hypothesis that areas with high greenness have lower impacts of air pollution on health, although some studies reported inconsistent findings. The findings from our review provide valuable knowledge on how greenness affects associations between air pollution and health and could help identify critical areas for future study.
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spelling doaj.art-85cef684adff4ad29a0c0767bce11f852023-08-09T15:02:34ZengIOP PublishingEnvironmental Research Letters1748-93262021-01-0116909300110.1088/1748-9326/ac0e61The roles of residential greenness in the association between air pollution and health: a systematic reviewJi-Young Son0Hayon Michelle Choi1Kelvin C Fong2https://orcid.org/0000-0002-8659-6794Seulkee Heo3Chris C Lim4Michelle L Bell5School of the Environment, Yale University , New Haven, CT, United States of AmericaSchool of the Environment, Yale University , New Haven, CT, United States of AmericaSchool of the Environment, Yale University , New Haven, CT, United States of AmericaSchool of the Environment, Yale University , New Haven, CT, United States of AmericaSchool of the Environment, Yale University , New Haven, CT, United States of AmericaSchool of the Environment, Yale University , New Haven, CT, United States of AmericaWhile a growing body of literature suggests beneficial impacts of greenness on several health outcomes, relatively few studies have examined greenness as an effect modifier to impacts of air pollution on health outcomes, and results from the existing studies are inconclusive. We performed a comprehensive, systematic review of previous literature on greenness as a potential effect modifier for associations between particulate matter air pollution and health. After initial screening of 7814 studies, we identified 20 eligible studies. We summarized findings on study characteristics based on several criteria: health outcome, air pollution exposure, source of air pollution data, study location, study period, and median year of the study period. We evaluated characteristics of effect modification by greenness on air pollution and health associations based on the number of greenness metrics applied, type of greenness metric (e.g. normalized difference vegetation index, land use), data source for greenness, and spatial resolution and buffer size. We also summarized evidence for effect modification by greenness based on strength and direction of evidence for each study and overall evidence of effect modification by greenness by several study characteristics. Our systematic review showed that only a limited number of studies have been conducted on greenness as an effect modifier for air pollution-health associations. We found differences in several study characteristics such as greenness assessment (e.g. greenness metrics applied, spatial resolution, and data sources) across studies. Collectively, the studies provide suggestive evidence for the hypothesis that areas with high greenness have lower impacts of air pollution on health, although some studies reported inconsistent findings. The findings from our review provide valuable knowledge on how greenness affects associations between air pollution and health and could help identify critical areas for future study.https://doi.org/10.1088/1748-9326/ac0e61air pollutioneffect modifierhealthresidential greenness
spellingShingle Ji-Young Son
Hayon Michelle Choi
Kelvin C Fong
Seulkee Heo
Chris C Lim
Michelle L Bell
The roles of residential greenness in the association between air pollution and health: a systematic review
Environmental Research Letters
air pollution
effect modifier
health
residential greenness
title The roles of residential greenness in the association between air pollution and health: a systematic review
title_full The roles of residential greenness in the association between air pollution and health: a systematic review
title_fullStr The roles of residential greenness in the association between air pollution and health: a systematic review
title_full_unstemmed The roles of residential greenness in the association between air pollution and health: a systematic review
title_short The roles of residential greenness in the association between air pollution and health: a systematic review
title_sort roles of residential greenness in the association between air pollution and health a systematic review
topic air pollution
effect modifier
health
residential greenness
url https://doi.org/10.1088/1748-9326/ac0e61
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