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首页> 外文期刊>Environmental Science & Technology >Can a change in fire burning season affect air pollution?
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Can a change in fire burning season affect air pollution?

机译：燃烧季节的改变会影响空气污染吗？

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Planned forest fires can save lives and millions of dollars in property by reducing the amount of bio-mass that is available for wildfires. Yet these prescribed fires emit significant amounts of air pollutants. What would happen if the managed fires occurred during different seasons? New research published in ES&T (pp 2767-2772) examines this question in relation to data gathered in Georgia, where forests cover more than 66% of the state's total land. The researchers conclude that new changes in forest management practices can reduce the pollution levels from prescribed forest fires, including from smoldering ash. For example, fires in the spring and winter have a greater impact on fine particulatematter (PM_(2.5)) levels than equivalent fires in the summer and fall. However, ozone levels rise because of smoke from forest fires that occur during the spring and summer, they find.
机译：计划中的森林火灾可通过减少可用于野火的生物量来拯救生命和数百万美元的财产。然而，这些规定的火灾会释放出大量的空气污染物。如果在不同季节发生有管理的火灾将会怎样？ ES＆T（pp 2767-2772）上发表的一项新研究与佐治亚州收集的数据有关，对该问题进行了研究，佐治亚州的森林覆盖了该州总土地的66％以上。研究人员得出结论，森林管理实践的新变化可以降低规定的森林火灾（包括闷烧的灰烬）的污染水平。例如，与夏季和秋季的同等火灾相比，春季和冬季的火灾对细颗粒物（PM_（2.5））水平的影响更大。但是，他们发现，由于春季和夏季森林大火产生的烟雾，臭氧水平上升。

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