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Atmospheric methane removal by boreal plants

Publiceringsår: 2012
Språk: Engelska
Sidor: L21806-L21812
Publikation/Tidskrift/Serie: Geophysical Research Letters
Volym: 39
Nummer: 21
Dokumenttyp: Artikel
Förlag: American Geophysical Union

Sammanfattning

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.

Disputation

Nyckelord

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

Övrigt

Published
  • BECC
Yes
  • ISSN: 0094-8276

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