Harmful dust from drying lakes: Preserving Great Salt Lake (USA) water levels decreases ambient dust and racial disparities in population exposure

IF 15.1 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES One Earth Pub Date : 2024-06-21 DOI:10.1016/j.oneear.2024.05.006
Sara E. Grineski, Derek V. Mallia, Timothy W. Collins, Malcolm Araos, John C. Lin, William R.L. Anderegg, Kevin Perry
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Abstract

Lake desiccation is a global problem associated with increased human water use and climate change. Like other drying lakes, Utah’s Great Salt Lake (GSL) is producing health-harming dust. We estimate social disparities in dust fine particulate matter (PM2.5) exposures based on four policy-relevant water-level scenarios. Dust PM2.5 exposures would increase as GSL levels drop (e.g., from 24.0 μg m−3 to 32.0 μg m−3). People of color and those with no high school diploma would experience disproportionately higher exposures (e.g., 28.4 μg m−3 for Pacific Islanders vs. 26.0 μg m−3 for Whites under very low lake levels). Racial/ethnic disparities would be reduced if GSL water levels rose. If the GSL vanished, racial/ethnic disparities between the highest and lowest exposed groups would be moderate (16.3%). If the GSL stabilized at healthy levels, those disparities would be smaller (7.9%). While all nearby residents face unhealthy dust exposures, findings reveal exposure disparities for socially disadvantaged groups.

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干涸湖泊产生的有害粉尘:保护大盐湖(美国)水位可减少环境灰尘和人口接触中的种族差异
湖泊干涸是一个全球性问题,与人类用水量增加和气候变化有关。与其他干涸的湖泊一样,犹他州的大盐湖(GSL)也在产生有害健康的粉尘。我们根据四种与政策相关的水位情景,对粉尘细颗粒物(PM2.5)暴露的社会差异进行了估算。粉尘 PM2.5 暴露会随着 GSL 水平的下降而增加(例如,从 24.0 μg m-3 到 32.0 μg m-3)。有色人种和没有高中文凭的人的暴露量会高得不成比例(例如,在极低湖泊水位下,太平洋岛民的暴露量为 28.4 μg m-3 ,而白人为 26.0 μg m-3)。如果 GSL 水位上升,种族/族裔差异将缩小。如果 GSL 消失,最高和最低暴露群体之间的种族/族裔差异将达到中等程度(16.3%)。如果 GSL 稳定在健康水平,这些差距将缩小(7.9%)。虽然附近的所有居民都面临着不健康的粉尘暴露,但研究结果显示社会弱势群体的暴露程度存在差异。
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来源期刊
One Earth
One Earth Environmental Science-Environmental Science (all)
CiteScore
18.90
自引率
1.90%
发文量
159
期刊介绍: One Earth, Cell Press' flagship sustainability journal, serves as a platform for high-quality research and perspectives that contribute to a deeper understanding and resolution of contemporary sustainability challenges. With monthly thematic issues, the journal aims to bridge gaps between natural, social, and applied sciences, along with the humanities. One Earth fosters the cross-pollination of ideas, inspiring transformative research to address the complexities of sustainability.
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