野火烟雾对城市人口构成重大健康风险，其影响远远超出火灾直接区域。烟雾中的细颗粒物（PM2.5）与哮喘住院率上升有关，而烟雾中的化学反应会产生有害的挥发性有机化合物（VOCs）和地面臭氧。这些污染物可以传播数千公里，并在大气中持续数周，导致癌症风险升高，并因臭氧污染加剧而每年造成数千例额外死亡。 AI
排序理由 该条目是一篇分析文章，讨论野火烟雾对健康影响的研究，而非主要公告或事件。
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野火烟雾健康风险已成为主要城市问题
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报道来源 [1]
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野火已离开森林，蔓延进城市
A growing body of research shows that wildfires now pose a significant health risk to those living in cities.