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

Bäckstrand, KristinaStockholms universitet,Institutionen för geologi och geokemi,Stockholm University (författare)

Backstrand, Kristina Crill, Patrick M. Mastepanov, Mikhail Christensen, Torben R. Bastviken, David
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.

Crill, Patrick, M.Lund University,Lunds universitet,Stockholms universitet,Institutionen för geologi och geokemi,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science,Stockholm University(Swepub:lu)ple-mma (författare)
Mastepanov, M.Lund University (författare)
Christensen, TorbenLund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science(Swepub:lu)ekol-tch (författare)
Bastviken, D.Stockholms universitet,Institutionen för geologi och geokemi,Stockholm University(Swepub:su)dbast (författare)
Stockholms universitetInstitutionen för geologi och geokemi (creator_code:org_t)

Ingår i:Tellus. Series B, Chemical and physical meteorology: Stockholm University Press60:2, s. 226-2370280-65091600-0889

Av författaren/redakt...: Bäckstrand, Kris ...; Crill, Patrick, ...; Mastepanov, M.; Christensen, Tor ...; Bastviken, D.

Om ämnet

Av lärosätet: Linköpings universitet; Stockholms universitet; Lunds universitet

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