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<p>Climate change is increasing the frequency of extreme weather events such as vegetation fires. Vegetation fires emissions contain numerous organic compounds that impact the Earth system and human health. Here, we review the sources, stability, transport, degradation and&#xa0;geochemical records of levoglucosan, a dehydration monosaccharide produced by the pyrolysis of cellulose and hemicellulose. Levoglucosan has been detected in aerosols, water, snow and ice, and lake or marine sediments. Analysis of levoglucosan in environmental and&#xa0;geological samples enable the identification of temporal rhythms and detailed features of changes in vegetation fire patterns, ranging from individual events to seasonal to annual scales, up to glacial-interglacial cycles.</p>

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Geochemistry of vegetation fires using levoglucosan: a review

  • 期刊论文

  • 发表日期：

    2025年2月4日

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  • Chao You,
  • Jing Wang,
  • Xiao Dong,
  • Chao Xu

摘要

Climate change is increasing the frequency of extreme weather events such as vegetation fires. Vegetation fires emissions contain numerous organic compounds that impact the Earth system and human health. Here, we review the sources, stability, transport, degradation and geochemical records of levoglucosan, a dehydration monosaccharide produced by the pyrolysis of cellulose and hemicellulose. Levoglucosan has been detected in aerosols, water, snow and ice, and lake or marine sediments. Analysis of levoglucosan in environmental and geological samples enable the identification of temporal rhythms and detailed features of changes in vegetation fire patterns, ranging from individual events to seasonal to annual scales, up to glacial-interglacial cycles.