期刊
ENVIRONMENT AND PLANNING B-URBAN ANALYTICS AND CITY SCIENCE
卷 49, 期 3, 页码 933-952出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/23998083211039854
关键词
Redlining; urban heat; heat-related illness; climate change; environmental justice
资金
- Early Career Research Fellowship from the Gulf Research Program of the National Academies of Sciences, Engineering, and Medicine
- National Institute of Environmental Health Sciences Superfund Program [P42ES027704-01]
Place-based structural inequalities, such as historical redlining policies, contribute to disparities in intra-urban heat exposure and heat-related health outcomes. Areas with higher proportions of redlining showed elevated land surface temperatures and increased rates of heat-related outpatient visits and inpatient admissions, even after adjusting for social vulnerability indicators. The study emphasizes the need for equity-based urban heat planning and management strategies to address the impacts of historical discriminatory policies on health disparities.
Place-based structural inequalities can have critical implications for the health of vulnerable populations. Historical urban policies, such as redlining, have contributed to current inequalities in exposure to intra-urban heat. However, it is unknown whether these spatial inequalities are associated with disparities in heat-related health outcomes. The aim of this study is to determine the relationships between historical redlining, intra-urban heat conditions, and heat-related emergency department visits using data from 11 Texas cities. At the zip code level, the proportion of historical redlining was determined, and heat exposure was measured using daytime and nighttime land surface temperature (LST). Heat-related inpatient and outpatient rates were calculated based on emergency department visit data that included ten categories of heat-related diseases between 2016 and 2019. Regression or spatial error/lag models revealed significant associations between higher proportions of redlined areas in the neighborhood and higher LST (Coef. = 0.0122, 95% CI = 0.0039-0.0205). After adjusting for indicators of social vulnerability, neighborhoods with higher proportions of redlining showed significantly elevated heat-related outpatient visit rate (Coef. = 0.0036, 95% CI = 0.0007-0.0066) and inpatient admission rate (Coef. = 0.0018, 95% CI = 0.0001-0.0035). These results highlight the role of historical discriminatory policies on the disparities of heat-related illness and suggest a need for equity-based urban heat planning and management strategies.
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