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Non-methane volatile organic compound flux from a subarctic mire in Northern Sweden
Stockholm University.
Stockholm University.
Lund University.
Lund University.
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2008 (English)In: Tellus. Series B, Chemical and physical meteorology, ISSN 0280-6509, Vol. 60, no 2, 226-237 p.Article in journal (Refereed) Published
Abstract [en]

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 including NMVOCs in the overall carbon budget. Automatic and manual chamber measurements were used to estimate NMVOC fluxes 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 (similar to 17 ha) is estimated to consist of similar to 150 kgC during a growing season with 150 d. NMVOC fluxes can account for similar to 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.

Place, publisher, year, edition, pages
2008. Vol. 60, no 2, 226-237 p.
National Category
Natural Sciences
URN: urn:nbn:se:liu:diva-28221DOI: 10.1111/j.1600-0889.2007.00331.xISBN: 0280-6509OAI: diva2:248972
Backstrand, Kristina Crill, Patrick M. Mastepanov, Mikhail Christensen, Torben R. Bastviken, DavidAvailable from: 2009-10-09 Created: 2009-10-09 Last updated: 2009-10-09

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