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Bayesian calibration method used to elucidate carbon turnover in forest on drained organic soil
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering, Environmental Geochemistry and Ecotechnology.
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering, Environmental Geochemistry and Ecotechnology.
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2008 (English)In: Biogeochemistry, ISSN 0168-2563, E-ISSN 1573-515X, Vol. 89, no 1, 61-79 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2008. Vol. 89, no 1, 61-79 p.
Keyword [en]
spruce forest, drained soils, net ecosystem exchange, respiration, latent heat flux, sensible heat flux, simulations, eddy covariance, chambers, biomass, coniferous forests, co2 efflux, water, respiration, temperature, peatlands, fluxes, climate, balance, sensitivity
Identifiers
URN: urn:nbn:se:kth:diva-17650DOI: 10.1007/s10533-007-9169-0ISI: 000257201300006Scopus ID: 2-s2.0-46249133562OAI: oai:DiVA.org:kth-17650DiVA: diva2:335694
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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