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Greenhouse gas dynamics of a well-drained afforested agricultural peatland

Journal article
Authors Maria Ernfors
Robert G. Björk
Azad Nousratpour
David Rayner
Per Weslien
Leif Klemedtsson
Published in Boreal environment research
Volume 25
Pages 65-77
ISSN 1239-6095
Publication year 2020
Published at Department of Earth Sciences
Pages 65-77
Language en
Subject categories Terrestrial ecology, Environmental Sciences


About a quarter of the global anthropogenic greenhouse gas emissions are attributable to agriculture, forestry and other land use. Few studies of afforested drained peatlands have measured exchanges of all three major greenhouse gases (GHG) at a given site, leading to uncertainty in estimated GHG budgets. Thus, we measured forest floor exchange of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) at a well-drained afforested peatland in southern Sweden. The CO2 emissions (76 000 kg ha–1 a–1; SE 6 000) were large compared with previous measurements at similar sites, which may have been partly due to a measurement technique that did not underestimate the flux. A net CH4 uptake of 4.4 kg ha–1 a–1 (SE 0.41) and a net N2O emission of 2.7 kg ha–1 a–1 (SE 0.23) were found, which agreed well with published models relating fluxes to stand biomass (CH4 models) or soil C:N ratio (N2O models).

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