Persistent carbon sink at a boreal drained bog forest

Show simple item record

dc.contributor.author Minkkinen, Kari
dc.contributor.author Ojanen, Paavo
dc.contributor.author Penttilä, Timo
dc.contributor.author Aurela, Mika
dc.contributor.author Laurila, Tuomas
dc.contributor.author Tuovinen, Juha-Pekka
dc.contributor.author Lohila, Annalea
dc.date.accessioned 2018-07-05T12:55:01Z
dc.date.available 2018-07-05T12:55:01Z
dc.date.issued 2018-06-15
dc.identifier.citation Minkkinen , K , Ojanen , P , Penttilä , T , Aurela , M , Laurila , T , Tuovinen , J-P & Lohila , A 2018 , ' Persistent carbon sink at a boreal drained bog forest ' , Biogeosciences , vol. 15 , no. 11 , pp. 3603-3624 . https://doi.org/10.5194/bg-15-3603-2018
dc.identifier.other PURE: 108676087
dc.identifier.other PURE UUID: e2d6da23-9d99-43d3-8d2e-507a46ff9867
dc.identifier.other WOS: 000435399200005
dc.identifier.other Scopus: 85048752348
dc.identifier.other ORCID: /0000-0001-8520-0084/work/46452684
dc.identifier.other ORCID: /0000-0003-4785-3521/work/46457939
dc.identifier.uri http://hdl.handle.net/10138/236970
dc.description.abstract Drainage of peatlands is expected to turn these ecosystems into carbon sources to the atmosphere. We measured carbon dynamics of a drained forested peatland in southern Finland over 4 years, including one with severe drought during growing season. Net ecosystem exchange (NEE) of carbon dioxide (CO2) was measured with the eddy covariance method from a mast above the forest. Soil and forest floor CO2 and methane (CH4) fluxes were measured from the strips and from ditches with closed chambers. Biomass and litter production were sampled, and soil subsidence was measured by repeated levellings of the soil surface. The drained peatland ecosystem was a strong sink of carbon dioxide in all studied years. Soil CO2 balance was estimated by subtracting the carbon sink of the growing tree stand from NEE, and it showed that the soil itself was a carbon sink as well. A drought period in one summer significantly decreased the sink through decreased gross primary production. Drought also decreased ecosystem respiration. The site was a small sink for CH4, even when emissions from ditches were taken into account. Despite the continuous carbon sink, peat surface subsided slightly during the 10-year measurement period, which was probably mainly due to compaction of peat. It is concluded that even 50 years after drainage this peatland site acted as a soil C sink due to relatively small changes in the water table and in plant community structure compared to similar undrained sites, and the significantly increased tree stand growth and litter production. Although the site is currently a soil C sink, simulation studies with process models are needed to test whether such sites could remain C sinks when managed for forestry over several tree-stand rotations. en
dc.format.extent 22
dc.language.iso eng
dc.relation.ispartof Biogeosciences
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject WATER-LEVEL DRAWDOWN
dc.subject HETEROTROPHIC SOIL RESPIRATION
dc.subject GREENHOUSE-GAS FLUXES
dc.subject PEATLAND FOREST
dc.subject SOUTHERN FINLAND
dc.subject PINE MIRES
dc.subject SCOTS PINE
dc.subject ORGANIC-MATTER
dc.subject ECOSYSTEM RESPIRATION
dc.subject CONIFEROUS FORESTS
dc.subject 1172 Environmental sciences
dc.title Persistent carbon sink at a boreal drained bog forest en
dc.type Article
dc.contributor.organization Department of Forest Sciences
dc.contributor.organization Kari Minkkinen / Principal Investigator
dc.contributor.organization Forest Ecology and Management
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.5194/bg-15-3603-2018
dc.relation.issn 1726-4170
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

Files in this item

Total number of downloads: Loading...

Files Size Format View
bg_15_3603_2018.pdf 3.655Mb PDF View/Open

This item appears in the following Collection(s)

Show simple item record