Prescribed burn related increases of population exposure to PM2.5 and O3 pollution in the southeastern US over 2013–2020

IF 10.3 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environment International Pub Date : 2024-11-01 DOI:10.1016/j.envint.2024.109101

Kamal J. Maji , Zongrun Li , Yongtao Hu , Ambarish Vaidyanathan , Jennifer D. Stowell , Chad Milando , Gregory Wellenius , Patrick L. Kinney , Armistead G. Russell , M. Talat Odman

{"title":"Prescribed burn related increases of population exposure to PM2.5 and O3 pollution in the southeastern US over 2013–2020","authors":"Kamal J. Maji , Zongrun Li , Yongtao Hu , Ambarish Vaidyanathan , Jennifer D. Stowell , Chad Milando , Gregory Wellenius , Patrick L. Kinney , Armistead G. Russell , M. Talat Odman","doi":"10.1016/j.envint.2024.109101","DOIUrl":null,"url":null,"abstract":"<div><div>Ambient air quality across the southeastern US has improved substantially in recent decades. However, emissions from prescribed burns remain high, which may pose a substantial health threat. We employed a multistage modeling framework to estimate year-round, long-term effects of prescribed burns on air quality and premature deaths. The framework integrates a chemical transport model with a data-fusion approach to estimate 24-h average PM2.5 and maximum daily 8-h averaged O3 (MDA8-O3) concentrations attributable to prescribed burns for the period 2013–2020. The Global Exposure Mortality Model and a log-linear exposure–response function were used to estimate the premature deaths ascribed to long-term prescribed burn PM2.5 and MDA8-O3 exposure in ten southeastern states. Our results indicate that prescribed burns contributed on annual average 0.59 ± 0.20 µg/m3 of PM2.5 (∼10 % of ambient PM2.5) over the ten southeastern states during the study period. On average around 15 % of the state-level ambient PM2.5 concentrations were contributed by prescribed burns in Alabama (0.90 ± 0.15 µg/m3), Florida (0.65 ± 0.19 µg/m3), Georgia (0.91 ± 0.19 µg/m3), Mississippi (0.65 ± 0.10 µg/m3) and South Carolina (0.65 ± 0.09 µg/m3). In the extensive burning season (January–April), daily average contributions to ambient PM2.5 increased up to 22 % in those states. A large part of Alabama and Georgia experiences ≥3.5 µg/m3 prescribed burn PM2.5 over 30 days/year. Additionally, prescribed burns are responsible for an average increase of 0.32 ± 0.12 ppb of MDA8-O3 (0.8 % of ambient MDA8-O3) over the ten southeastern states. The combined effect of prescribed burn PM2.5 exposure, population growth, and increase of baseline mortality over time resulted in a total of 20,416 (95 % confidence interval (CI): 16,562–24,174) excess non-accidental premature deaths in the ten southeastern states, with 25 % of these deaths in Georgia. Prescribed burn MDA8-O3 was responsible for an additional 1,332 (95 % CI: 858–1,803) premature deaths in the ten southeastern states. These findings indicate significant impacts from prescribed burns, suggesting potential benefits of enhanced forest management strategies.</div></div>","PeriodicalId":308,"journal":{"name":"Environment International","volume":"193 ","pages":"Article 109101"},"PeriodicalIF":10.3000,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environment International","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0160412024006871","RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

Ambient air quality across the southeastern US has improved substantially in recent decades. However, emissions from prescribed burns remain high, which may pose a substantial health threat. We employed a multistage modeling framework to estimate year-round, long-term effects of prescribed burns on air quality and premature deaths. The framework integrates a chemical transport model with a data-fusion approach to estimate 24-h average PM_2.5 and maximum daily 8-h averaged O₃ (MDA8-O₃) concentrations attributable to prescribed burns for the period 2013–2020. The Global Exposure Mortality Model and a log-linear exposure–response function were used to estimate the premature deaths ascribed to long-term prescribed burn PM_2.5 and MDA8-O₃ exposure in ten southeastern states. Our results indicate that prescribed burns contributed on annual average 0.59 ± 0.20 µg/m³ of PM_2.5 (∼10 % of ambient PM_2.5) over the ten southeastern states during the study period. On average around 15 % of the state-level ambient PM_2.5 concentrations were contributed by prescribed burns in Alabama (0.90 ± 0.15 µg/m³), Florida (0.65 ± 0.19 µg/m³), Georgia (0.91 ± 0.19 µg/m³), Mississippi (0.65 ± 0.10 µg/m³) and South Carolina (0.65 ± 0.09 µg/m³). In the extensive burning season (January–April), daily average contributions to ambient PM_2.5 increased up to 22 % in those states. A large part of Alabama and Georgia experiences ≥3.5 µg/m³ prescribed burn PM_2.5 over 30 days/year. Additionally, prescribed burns are responsible for an average increase of 0.32 ± 0.12 ppb of MDA8-O₃ (0.8 % of ambient MDA8-O₃) over the ten southeastern states. The combined effect of prescribed burn PM_2.5 exposure, population growth, and increase of baseline mortality over time resulted in a total of 20,416 (95 % confidence interval (CI): 16,562–24,174) excess non-accidental premature deaths in the ten southeastern states, with 25 % of these deaths in Georgia. Prescribed burn MDA8-O₃ was responsible for an additional 1,332 (95 % CI: 858–1,803) premature deaths in the ten southeastern states. These findings indicate significant impacts from prescribed burns, suggesting potential benefits of enhanced forest management strategies.

Abstract Image

查看原文本刊更多论文

2013-2020 年间美国东南部地区与烧荒相关的 PM2.5 和 O3 污染人口暴露增加情况

近几十年来，美国东南部的环境空气质量有了很大改善。然而，规定焚烧的排放量仍然很高，这可能会对健康造成严重威胁。我们采用了一个多阶段建模框架来估算全年、长期的规定焚烧对空气质量和过早死亡的影响。该框架将化学传输模型与数据融合方法相结合，以估算 2013-2020 年期间可归因于规定燃烧的 24 小时平均 PM2.5 和最大日 8 小时平均臭氧（MDA8-O3）浓度。我们使用全球暴露死亡率模型和对数线性暴露-响应函数来估算东南部十个州因长期暴露于规定燃烧的 PM2.5 和 MDA8-O3 而导致的过早死亡人数。研究结果表明，在研究期间，东南部十个州的PM2.5年均浓度为0.59 ± 0.20 µg/m3（占环境PM2.5的10%）。阿拉巴马州（0.90 ± 0.15 µg/m3）、佛罗里达州（0.65 ± 0.19 µg/m3）、佐治亚州（0.91 ± 0.19 µg/m3）、密西西比州（0.65 ± 0.10 µg/m3）和南卡罗来纳州（0.65 ± 0.09 µg/m3）的州级环境 PM2.5 浓度平均约有 15% 来自于规定燃烧。在大面积燃烧的季节（1 月至 4 月），这些州的环境 PM2.5 日均浓度最高增加了 22%。阿拉巴马州和佐治亚州的大部分地区每年有 30 天的规定焚烧 PM2.5 ≥3.5 µg/m3。此外，在东南部十个州中，规定燃烧导致 MDA8-O3 平均增加了 0.32 ± 0.12 ppb（占环境 MDA8-O3 的 0.8%）。随着时间的推移，PM2.5 暴露、人口增长和基线死亡率增加的综合效应导致东南部十个州总共有 20,416 人（95% 置信区间 (CI)：16,562-24,174）非意外过早死亡，其中 25% 的死亡发生在佐治亚州。在东南部的十个州中，MDA8-O3 规定燃烧造成了额外的 1,332 例过早死亡（95 % CI：858-1,803 例）。这些研究结果表明，规定燃烧会产生重大影响，这表明加强森林管理策略具有潜在的益处。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Environment International 环境科学-环境科学

CiteScore

21.90

自引率

3.40%

发文量

734

审稿时长

2.8 months

期刊介绍： Environmental Health publishes manuscripts focusing on critical aspects of environmental and occupational medicine, including studies in toxicology and epidemiology, to illuminate the human health implications of exposure to environmental hazards. The journal adopts an open-access model and practices open peer review. It caters to scientists and practitioners across all environmental science domains, directly or indirectly impacting human health and well-being. With a commitment to enhancing the prevention of environmentally-related health risks, Environmental Health serves as a public health journal for the community and scientists engaged in matters of public health significance concerning the environment.