High methane emissions from restored Norway spruce swamps in southern Finland over one growing season

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http://hdl.handle.net/10138/208098

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Koskinen , M , Maanavilja , L M , Nieminen , M , Minkkinen , K & Tuittila , E-S 2016 , ' High methane emissions from restored Norway spruce swamps in southern Finland over one growing season ' , Mires and Peat , vol. 17 , 02 . https://doi.org/10.19189/MaP.2015.OMB.202

Title: High methane emissions from restored Norway spruce swamps in southern Finland over one growing season
Author: Koskinen, Markku; Maanavilja, Liisa Maria; Nieminen, Mika; Minkkinen, Kari; Tuittila, Eeva-Stiina
Contributor: University of Helsinki, Department of Forest Sciences
University of Helsinki, Department of Forest Sciences
University of Helsinki, Department of Forest Sciences
University of Helsinki, Itä-Suomen yliopisto
Date: 2016-02-28
Language: eng
Number of pages: 13
Belongs to series: Mires and Peat
ISSN: 1819-754X
URI: http://hdl.handle.net/10138/208098
Abstract: Forestry-drained peatlands in the boreal region are currently undergoing restoration in order to bring these ecosystems closer to their natural (undrained) state. Drainage affects the methane (CH4) dynamics of a peatland, often changing sites from CH4 sources to sinks. Successful restoration of a peatland would include restoration of not only the surface vegetation and hydrology, but also the microbial populations and thus CH4 dynamics. As a pilot study, CH4 emissions were measured on two pristine, two drained and three restored boreal spruce swamps in southern Finland for one growing season. Restoration was successful in the sense that the water table level in the restored sites was significantly higher than in the drained sites, but it was also slightly higher than in the pristine sites. The restored sites were surprisingly large sources of CH4 (mean emissions of 52.84 mg CH4 m(-2) d(-1)), contrasting with both the pristine (1.51 mg CH4 m(-2) d(-1)) and the drained sites (2.09 mg CH4 m-(2) d(-1)). More research is needed to assess whether the high CH4 emissions observed in this study are representative of restored spruce mires in general.
Subject: 4112 Forestry
1172 Environmental sciences
CH4 fluxes
drained peatland
greenhouse gas
pristine mire
restoration
WATER-TABLE
DRAINED PEATLANDS
CUTAWAY PEATLANDS
VEGETATION CHANGE
BOREAL PEATLANDS
CO2 FLUXES
FORESTRY
MIRES
CH4
RESTORATION
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