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Carbon sequestration rates in organic layers of boreal and temperate forest soils - Sweden as a case study

Akselsson, Cecilia LU ; Berg, Björn; Meentemeyer, Vernon and Westling, Olle (2005) In Global Ecology and Biogeography Letters 14(1). p.77-84
Abstract
Aim The aim of this work was to estimate C sequestration rates in the organic matter layer in Swedish forests. Location The region encompassed the forested area (23 x 10(6) ha) of Sweden ranging from about 55degrees N to 69degrees N. Methods We used the concept of limit values to estimate recalcitrant litter remains, and combined it with amount of litter fall. Four groups of tree species were identified (pine, spruce, birch and 'other deciduous species'). Annual actual evapotranspiration (AET) was estimated for 5 x 5 km grids covering Sweden. For each grid, data of forested area and main species composition were available. The annual input of foliar litter into each grid was calculated using empirical relationships between AET and foliar... (More)
Aim The aim of this work was to estimate C sequestration rates in the organic matter layer in Swedish forests. Location The region encompassed the forested area (23 x 10(6) ha) of Sweden ranging from about 55degrees N to 69degrees N. Methods We used the concept of limit values to estimate recalcitrant litter remains, and combined it with amount of litter fall. Four groups of tree species were identified (pine, spruce, birch and 'other deciduous species'). Annual actual evapotranspiration (AET) was estimated for 5 x 5 km grids covering Sweden. For each grid, data of forested area and main species composition were available. The annual input of foliar litter into each grid was calculated using empirical relationships between AET and foliar litter fall in the four groups. Litter input was combined with average limit values for decomposition for the four groups of litter, based on empirical data. Finally, C sequestration rate was calculated using a constant factor of the C concentration in the litter decomposed to the limit value, thus forming soil organic matter (SOM). Results We obtained a value of 4.8 x 10(6) metric tons of C annually sequestered in SOM in soils of mature forests in Sweden, with an average of 180 kg ha(-1) and a range from 40 to 410 kg ha(-1). Norway spruce forests accumulated annually an average of 200 kg C ha(-1). The pine and birch groups had an average of 150 kg ha(-1) and for the group of other deciduous trees, which is limited to south Sweden, the C sequestration was around 400 kg ha(-1). Conclusions There is a clear C sequestration gradient over Sweden with the highest C sequestration in the south-west, mainly corresponding to the gradient in litter fall. The limit-value method appears useful for scaling up to a regional level to describe the C sequestration in SOM. A development of the limit value approach in combination with process-orientated dynamic models may have a predictive value. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Global Ecology and Biogeography Letters
volume
14
issue
1
pages
77 - 84
publisher
Wiley-Blackwell
external identifiers
  • wos:000226395400007
  • scopus:12444257762
ISSN
0960-7447
DOI
10.1111/j.1466-822X.2004.00133.x
language
English
LU publication?
yes
id
caecf6b8-90c9-4a81-971a-55f71c6638e9 (old id 138746)
date added to LUP
2007-06-25 09:35:50
date last changed
2017-01-01 07:03:50
@article{caecf6b8-90c9-4a81-971a-55f71c6638e9,
  abstract     = {Aim The aim of this work was to estimate C sequestration rates in the organic matter layer in Swedish forests. Location The region encompassed the forested area (23 x 10(6) ha) of Sweden ranging from about 55degrees N to 69degrees N. Methods We used the concept of limit values to estimate recalcitrant litter remains, and combined it with amount of litter fall. Four groups of tree species were identified (pine, spruce, birch and 'other deciduous species'). Annual actual evapotranspiration (AET) was estimated for 5 x 5 km grids covering Sweden. For each grid, data of forested area and main species composition were available. The annual input of foliar litter into each grid was calculated using empirical relationships between AET and foliar litter fall in the four groups. Litter input was combined with average limit values for decomposition for the four groups of litter, based on empirical data. Finally, C sequestration rate was calculated using a constant factor of the C concentration in the litter decomposed to the limit value, thus forming soil organic matter (SOM). Results We obtained a value of 4.8 x 10(6) metric tons of C annually sequestered in SOM in soils of mature forests in Sweden, with an average of 180 kg ha(-1) and a range from 40 to 410 kg ha(-1). Norway spruce forests accumulated annually an average of 200 kg C ha(-1). The pine and birch groups had an average of 150 kg ha(-1) and for the group of other deciduous trees, which is limited to south Sweden, the C sequestration was around 400 kg ha(-1). Conclusions There is a clear C sequestration gradient over Sweden with the highest C sequestration in the south-west, mainly corresponding to the gradient in litter fall. The limit-value method appears useful for scaling up to a regional level to describe the C sequestration in SOM. A development of the limit value approach in combination with process-orientated dynamic models may have a predictive value.},
  author       = {Akselsson, Cecilia and Berg, Björn and Meentemeyer, Vernon and Westling, Olle},
  issn         = {0960-7447},
  language     = {eng},
  number       = {1},
  pages        = {77--84},
  publisher    = {Wiley-Blackwell},
  series       = {Global Ecology and Biogeography Letters},
  title        = {Carbon sequestration rates in organic layers of boreal and temperate forest soils - Sweden as a case study},
  url          = {http://dx.doi.org/10.1111/j.1466-822X.2004.00133.x},
  volume       = {14},
  year         = {2005},
}