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Bayesian calibration method used to elucidate carbon turnover in forest on drained organic soil

Klemedtsson, Leif; Jansson, Per-Erik; Gustafsson, David; Karlberg, Louise; Weslien, Per; von Arnold, Karin; Ernfors, Maria; Langvall, Ola and Lindroth, Anders LU (2008) In Biogeochemistry 89(1). p.61-79
Abstract
Depending on the balance between sink and source processes for C, drained organic forest soil ecosystems can be in balance or act as net sinks or sources of CO2 to the atmosphere. In order to study the effect of groundwater level and soil temperature on C-flux, the CoupModel was calibrated (climate data, groundwater levels, soil CO2 flux, net ecosystem fluxes of CO2-exchange, sensible heat flux and latent heat flux, forest production etc.) for a drained forest in Sweden. Bayesian calibration techniques were used to elucidate how different parameters and variables were interlinked in C-circulation. The calibrated model reproduced abiotic and biotic variables reasonably well except for root respiration, which was largely underestimated.... (More)
Depending on the balance between sink and source processes for C, drained organic forest soil ecosystems can be in balance or act as net sinks or sources of CO2 to the atmosphere. In order to study the effect of groundwater level and soil temperature on C-flux, the CoupModel was calibrated (climate data, groundwater levels, soil CO2 flux, net ecosystem fluxes of CO2-exchange, sensible heat flux and latent heat flux, forest production etc.) for a drained forest in Sweden. Bayesian calibration techniques were used to elucidate how different parameters and variables were interlinked in C-circulation. The calibrated model reproduced abiotic and biotic variables reasonably well except for root respiration, which was largely underestimated. Bayesian calibration reduced the uncertainties in the model and highlighted the fact that calibrations should be performed with a high number of parameters instead of specific parameter values. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
sensible heat flux, latent heat flux, respiration, net ecosystem exchange, spruce forest, drained soils, simulations, eddy covariance, chambers, biomass
in
Biogeochemistry
volume
89
issue
1
pages
61 - 79
publisher
Springer
external identifiers
  • wos:000257201300006
  • scopus:46249133562
ISSN
1573-515X
DOI
10.1007/s10533-007-9169-0
language
English
LU publication?
yes
id
6b78965f-2dc0-494c-bf65-d03d1c4e7a7b (old id 1187170)
date added to LUP
2008-09-05 09:28:24
date last changed
2017-01-01 05:11:32
@article{6b78965f-2dc0-494c-bf65-d03d1c4e7a7b,
  abstract     = {Depending on the balance between sink and source processes for C, drained organic forest soil ecosystems can be in balance or act as net sinks or sources of CO2 to the atmosphere. In order to study the effect of groundwater level and soil temperature on C-flux, the CoupModel was calibrated (climate data, groundwater levels, soil CO2 flux, net ecosystem fluxes of CO2-exchange, sensible heat flux and latent heat flux, forest production etc.) for a drained forest in Sweden. Bayesian calibration techniques were used to elucidate how different parameters and variables were interlinked in C-circulation. The calibrated model reproduced abiotic and biotic variables reasonably well except for root respiration, which was largely underestimated. Bayesian calibration reduced the uncertainties in the model and highlighted the fact that calibrations should be performed with a high number of parameters instead of specific parameter values.},
  author       = {Klemedtsson, Leif and Jansson, Per-Erik and Gustafsson, David and Karlberg, Louise and Weslien, Per and von Arnold, Karin and Ernfors, Maria and Langvall, Ola and Lindroth, Anders},
  issn         = {1573-515X},
  keyword      = {sensible heat flux,latent heat flux,respiration,net ecosystem exchange,spruce forest,drained soils,simulations,eddy covariance,chambers,biomass},
  language     = {eng},
  number       = {1},
  pages        = {61--79},
  publisher    = {Springer},
  series       = {Biogeochemistry},
  title        = {Bayesian calibration method used to elucidate carbon turnover in forest on drained organic soil},
  url          = {http://dx.doi.org/10.1007/s10533-007-9169-0},
  volume       = {89},
  year         = {2008},
}