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Large Air Quality and Public Health Impacts due to Amazonian Deforestation Fires in 2019

机译：2019年亚马逊森林砍伐火灾引起的大型空气质量和公共卫生影响

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Air pollution from Amazon fires has adverse impacts on human health. The number of fires in the Amazon has increased in recent years, but whether this increase was driven by deforestation or climate has not been assessed. We analyzed relationships between fire, deforestation, and climate for the period 2003 to 2019 among selected states across the Brazilian Legal Amazon (BLA). A statistical model including deforestation, precipitation and temperature explained ∼80% of the variability in dry season fire count across states when totaled across the BLA, with positive relationships between fire count and deforestation. We estimate that the increase in deforestation since 2012 increased the dry season fire count in 2019 by 39%. Using a regional chemistry‐climate model combined with exposure‐response associations, we estimate this increase in fire resulted in 3,400 (95UI: 3,300–3,550) additional deaths in 2019 due to increased exposure to particulate air pollution. If deforestation in 2019 had increased to the maximum recorded during 2003–2019, the number of active fire counts would have increased by an additional factor of 2 resulting in 7,900 (95UI: 7,600–8,200) additional premature deaths. Our analysis demonstrates the strong benefits of reduced deforestation on air quality and public health across the Amazon.
机译：亚马逊火灾的空气污染对人类健康产生了不利影响。近年来，亚马逊的火灾数量增加，但这种增加是否受到森林砍伐或气候尚未被评估。我们在巴西法律亚马逊（BLA）中的选定国中，在2003年至2019年期间分析了火灾，森林和气候之间的关系。一种统计模型，包括砍伐森林，降水和温度，在全面跨越各州时，在全部跨越各州的干燥季节火数量的~80％，具有火数与森林砍伐之间的正关系。我们估计自2012年以来的森林砍伐增加增加了2019年的干燥季火计数39％。利用区域化学气候模型与曝光反应协会相结合，我们在2019年估计了这一火灾的增加，导致了3,400（95ui：3,300-3,550）额外的死亡，由于暴露于微粒空气污染。如果2019年的森林砍伐增加到2003-2019期间的最大记录，则活跃火数量的数量将增加2个额外因素，导致7,900（95ui：7,600-8,200）额外的过早死亡。我们的分析表明，亚马逊穿越空气质量和公共卫生的强劲效益。

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