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Atmospheric methane removal by boreal plants

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Author

Summary, in English

Several studies have proposed aerobic methane (CH4) emissions by plants. If confirmed, these findings would further increase the imbalance in the global CH4 budget which today underestimates CH4 sinks. Oxidation by OH-radicals in the troposphere is the major identified sink followed by smaller contribution from stratospheric loss and oxidation by methano- and methylotrophic bacteria in soils. This study directly investigated CH4 exchange by plants in their natural environment. At a forest site in central Sweden, in situ branch chamber measurements were used to study plant ambient CH4 exchange by spruce (Picea abies), birch (Betula pubescens), rowan (Sorbus aucuparia) and pine (Pinus sylvestris). The results show a net uptake of CH4 by all the studied plants, which might be of importance for the methane budget.

Publishing year

2012

Language

English

Pages

21806-21812

Publication/Series

Geophysical Research Letters

Volume

39

Issue

21

Document type

Journal article

Publisher

American Geophysical Union (AGU)

Topic

  • Physical Geography

Keywords

  • trace gases
  • biosphere/atmosphere interactions
  • biogeophysics
  • temperature
  • biogeochemical cycles
  • processes
  • and modeling
  • spruce
  • pine
  • radiation
  • in situ measurements

Status

Published

ISBN/ISSN/Other

  • ISSN: 1944-8007