SwePub
Sök i LIBRIS databas

  Extended search

WFRF:(Klemedtsson Leif 1953)
 

Search: WFRF:(Klemedtsson Leif 1953) > (2010-2014) > A fertile peatland ...

  • Meyer, AstridGothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences (author)

A fertile peatland forest does not constitute a major greenhouse gas sink

  • Article/chapterEnglish2013

Publisher, publication year, extent ...

  • 2013-11-28
  • Copernicus GmbH,2013

Numbers

  • LIBRIS-ID:oai:gup.ub.gu.se/187773
  • https://gup.ub.gu.se/publication/187773URI
  • https://doi.org/10.5194/bg-10-7739-2013DOI
  • https://lup.lub.lu.se/record/4273227URI
  • https://res.slu.se/id/publ/53152URI

Supplementary language notes

  • Language:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Afforestation has been proposed as a strategy to mitigate the often high greenhouse gas (GHG) emissions from agricultural soils with high organic matter content. However, the carbon dioxide (CO2) and nitrous oxide (N2O) fluxes after afforestation can be considerable, depending predominantly on site drainage and nutrient availability. Studies on the full GHG budget of afforested organic soils are scarce and hampered by the uncertainties associated with methodology. In this study we etermined the GHG budget of a spruce-dominated forest on a drained organic soil with an agricultural history. Two different approaches for determining the net ecosystem CO2 exchange (NEE) were applied, for the year 2008, one direct (eddy covariance) and the other indirect (analyzing the different components of the GHG budget), so that uncertainties in each method could be evaluated. The annual tree production in 2008 was 8.3±3.9 tC ha−1 yr−1 due to the high levels of soil nutrients, the favorable climatic conditions and the fact that the forest was probably in its phase of maximum C assimilation or shortly past it. The N2O fluxes were determined by the closed-chamber technique and amounted to 0.9±0.8 tCeq ha−1 yr−1. According to the direct measurements from the eddy covariance technique, the site acts as a minor GHG sink of −1.2±0.8 t Ceq ha−1 yr−1. This contrasts with the NEE estimate derived from the indirect approach which suggests that the site is a net GHG emitter of 0.6±4.5 tCeq ha−1 yr−1. Irrespective of the approach applied, the soil CO2 effluxes counter large amounts of the C sequestration by trees. Due to accumulated uncertainties involved in the indirect approach, the direct approach is considered the more reliable tool. As the rate of C sequestration will likely decrease with forest age, the site will probably become a GHG source once again as the trees do not compensate for the soil C and N losses. Also forests in younger age stages have been shown to have lower C assimilation rates; thus, the overall GHG sink potential of this afforested nutrient-rich organic soil is probably limited to the short period of maximum C assimilation.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Tarvainen, Lasse,1977Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skogens ekologi och skötsel,Department of Forest Ecology and Management(Swepub:slu)96368 (author)
  • Nousratpour, AzadGothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences (author)
  • Björk, Robert G.,1974Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences(Swepub:gu)xbjoro (author)
  • Ernfors, Maria,1973Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Agrosystem(Swepub:slu)48879 (author)
  • Grelle, AchimSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för ekologi,Department of Ecology(Swepub:slu)48068 (author)
  • Klemedtsson, Åsa Kasimir,1956Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences(Swepub:gu)xkleas (author)
  • Lindroth, AndersLund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science(Swepub:lu)ngeo-ali (author)
  • Räntfors, Mats,1954Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences(Swepub:gu)xrantm (author)
  • Rütting, Tobias,1977Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences(Swepub:gu)xrutto (author)
  • Wallin, Göran,1955Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences(Swepub:gu)xwallg (author)
  • Weslien, Per,1963Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences(Swepub:gu)xweslp (author)
  • Klemedtsson, Leif,1953Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences(Swepub:gu)xklele (author)
  • Göteborgs universitetInstitutionen för biologi och miljövetenskap (creator_code:org_t)
  • Sveriges lantbruksuniversitet

Related titles

  • In:Biogeosciences: Copernicus GmbH10, s. 7739-77581726-41701726-4189

Internet link

Find in a library

To the university's database

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Close

Copy and save the link in order to return to this view