Non-methane volatile organic compound flux from a subarctic mire in Northern Sweden

Biogenic NMVOCs are mainly formed by plants and microorganisms. They have strong impact on the local atmospheric chemistry when emitted to the atmosphere. The objective of this study was to determine if there are significant emissions of non-methane volatile organic compounds (NMVOCs) from a subarct...

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Bibliographic Details
Published in:	Tellus. Series B, Chemical and physical meteorology Chemical and physical meteorology, 2008-04, Vol.60 (2), p.226-237
Main Authors:	Bäckstrand, Kristina, Crill, Patrick M., Mastepanov, Mikhail, Christensen, Torben R., Bastviken, David
Format:	Article
Language:	eng
Subjects:	Animal and plant ecology Animal, plant and microbial ecology Biological and medical sciences Chemical composition and interactions. Ionic interactions and processes Earth and Related Environmental Sciences Earth, ocean, space Eriophorum Exact sciences and technology External geophysics Fundamental and applied biological sciences. Psychology Geovetenskap och miljövetenskap Meteorology NATURAL SCIENCES Naturgeografi NATURVETENSKAP Physical Geography Sphagnum Synecology Terrestrial ecosystems
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Summary:	Biogenic NMVOCs are mainly formed by plants and microorganisms. They have strong impact on the local atmospheric chemistry when emitted to the atmosphere. The objective of this study was to determine if there are significant emissions of non-methane volatile organic compounds (NMVOCs) from a subarctic mire in northern Sweden. Subarctic peatlands in discontinuous permafrost regions are undergoing substantial environmental changes due to their high sensitivity to climate warming and there is need for includingNMVOCs in the overall carbon budget. Automatic and manual chamber measurements were used to estimateNMVOCfluxes from three dominating subhabitats on the mire during three growing seasons. Emission rates varied and were related to plant species distribution and seasonal net ecosystem exchange of carbon dioxide. The highest fluxes were observed from wetter sites dominated by Eriophorum and Sphagnum spp. Total NMVOC emissions from the mire (∼17 ha) is estimated to consist of ∼150 kgC during a growing season with 150 d. NMVOC fluxes can account for ∼5% of total net carbon exchange (−3177 kgC) at the mire during the same period. NMVOC emissions are therefore a significant component in a local carbon budget for peatlands
ISSN:	0280-6509 1600-0889 1600-0889