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A young afforestation area in Iceland was a moderate sink to CO2 only a decade after scarification and establishment

Bjarnadottir, Brynhildur LU ; Sigurdsson, B. D. and Lindroth, Anders LU (2009) In Biogeosciences 6(12). p.2895-2906
Abstract
This study reports on three years (2004-2006) of measurements of net ecosystem exchange (NEE) over a young Siberian larch plantation in Iceland established on previously grazed heathland pasture that had been scarified prior to planting. The study evaluated the variation of NEE and its component fluxes, gross primary production (GPP) and ecosystem respiration (R-e), with the aim to clarify how climatic factors controlled the site's carbon balance. The young plantation acted as a relatively strong sink for CO2 during all of the three years, with an annual net sequestration of -102, -154, and -67 g C m(-2) for 2004, 2005, and 2006, respectively. This variation was more related to variation in carbon efflux (R-e) than carbon uptake (GPP). The... (More)
This study reports on three years (2004-2006) of measurements of net ecosystem exchange (NEE) over a young Siberian larch plantation in Iceland established on previously grazed heathland pasture that had been scarified prior to planting. The study evaluated the variation of NEE and its component fluxes, gross primary production (GPP) and ecosystem respiration (R-e), with the aim to clarify how climatic factors controlled the site's carbon balance. The young plantation acted as a relatively strong sink for CO2 during all of the three years, with an annual net sequestration of -102, -154, and -67 g C m(-2) for 2004, 2005, and 2006, respectively. This variation was more related to variation in carbon efflux (R-e) than carbon uptake (GPP). The abiotic factors that showed the strongest correlation to R-e were air temperature during the growing season and soil water potential. The GPP mostly followed the seasonal pattern in irradiance, except in 2005, when the plantation experienced severe spring frost damage that set the GPP back to zero. It was not expected that the rather slow-growing Siberian larch plantation would be such a strong sink for atmospheric CO2 only twelve years after site preparation and afforestation. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Biogeosciences
volume
6
issue
12
pages
2895 - 2906
publisher
Copernicus Publications
external identifiers
  • wos:000273060100011
  • scopus:72449186568
ISSN
1726-4189
language
English
LU publication?
yes
id
1bdbad9d-ccab-40f3-b2f8-68e1b92e7757 (old id 1531761)
date added to LUP
2010-01-28 16:58:51
date last changed
2017-01-01 04:34:45
@article{1bdbad9d-ccab-40f3-b2f8-68e1b92e7757,
  abstract     = {This study reports on three years (2004-2006) of measurements of net ecosystem exchange (NEE) over a young Siberian larch plantation in Iceland established on previously grazed heathland pasture that had been scarified prior to planting. The study evaluated the variation of NEE and its component fluxes, gross primary production (GPP) and ecosystem respiration (R-e), with the aim to clarify how climatic factors controlled the site's carbon balance. The young plantation acted as a relatively strong sink for CO2 during all of the three years, with an annual net sequestration of -102, -154, and -67 g C m(-2) for 2004, 2005, and 2006, respectively. This variation was more related to variation in carbon efflux (R-e) than carbon uptake (GPP). The abiotic factors that showed the strongest correlation to R-e were air temperature during the growing season and soil water potential. The GPP mostly followed the seasonal pattern in irradiance, except in 2005, when the plantation experienced severe spring frost damage that set the GPP back to zero. It was not expected that the rather slow-growing Siberian larch plantation would be such a strong sink for atmospheric CO2 only twelve years after site preparation and afforestation.},
  author       = {Bjarnadottir, Brynhildur and Sigurdsson, B. D. and Lindroth, Anders},
  issn         = {1726-4189},
  language     = {eng},
  number       = {12},
  pages        = {2895--2906},
  publisher    = {Copernicus Publications},
  series       = {Biogeosciences},
  title        = {A young afforestation area in Iceland was a moderate sink to CO2 only a decade after scarification and establishment},
  volume       = {6},
  year         = {2009},
}