Boreal forest methane exchange – sink and/or source?
Person photo Prof Patrick Crill
Department of Geological Sciences

Funding source: Formas - The Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning
Period: 1/1/07 - 12/31/08
Funding: 1320000 SEK
In a recent article in Nature it was shown that methane can be emitted from plants under aerobic conditions and that the process was abiotic. The estimated possible contribution to the global budget was substantial, between 10-30%. If the results holds, then all methane budgets estimated so fas has to be revised and reanalyzed. We have done measurements of methane exchnage in a coniferous forest using eddy covariance and chambers techniques and our results support the recently publiched findings that vegetation actually do emitt methane. Since the process responsible for this emission is largely unknown we suggest as a first step, to better quantify the fluxes of methane from the whole stand, foliage and soil and we also want to study the concentrations in the soil in order to estimate the source/sink distribution.
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Lund University,
University of Gothenburg,