Synthesis on the carbon budget and cycling in a Danish, temperate deciduous forest
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Synthesis on the carbon budget and cycling in a Danish, temperate deciduous forest. / Wu, J.; Larsen, Klaus Steenberg; van der Linden, L.; Beier, C.; Pilegaard, K.; Ibrom, A.
In: Agricultural and Forest Meteorology, Vol. 181, 2013, p. 94-107.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Synthesis on the carbon budget and cycling in a Danish, temperate deciduous forest
AU - Wu, J.
AU - Larsen, Klaus Steenberg
AU - van der Linden, L.
AU - Beier, C.
AU - Pilegaard, K.
AU - Ibrom, A.
PY - 2013
Y1 - 2013
N2 - A synthesis of five years (2006–2010) of data on carbon cycling in a temperate deciduous forest, Sorø (Zealand, Denmark) was performed by combining all available data from eddy covariance, chamber, suction cups, and biometric measurements. The net ecosystem exchange of CO2 (NEE), soil respiration, tree growth, litter production and leaching of dissolved inorganic and organic carbon were independently estimated and used to calculate other unmeasured ecosystem carbon budget (ECB) components, based on mass balance equations. This provided a complete assessment of the carbon storage and allocation within the ecosystem. The results showed that this temperate deciduous forest was a moderate carbon sink (258 ± 41 g C m−2 yr−1) with both high rates of gross primary production (GPP, 1881 ± 95 g C m−2 yr−1) and ecosystem respiration (Re, 1624 ± 197 g C m−2 yr−1). Approximately 62% of the gross assimilated carbon was respired by the living plants, while 21% was contributed to the soil as litter production, the latter balancing the total heterotrophic respiration. The remaining 17% were either stored in the plants (mainly as aboveground biomass) or removed from the system as wood yield. The soil organic carbon stock was considered unchanged over the period of observation, given the high degree of uncertainty associated with the small loss detected (33 ± 85 g C m−2 yr−1). The ECB component data were generally consistent, except for one of the derived fluxes, the aboveground autotrophic respiration, which appeared to be higher than expected. The potential causes for this, i.e. underestimation of soil respiration and/or overestimation of Re are discussed. The plausibility analyses reported here, using multiple ECB data sets together with simple mass conservation equations and the evaluation of data consistency on the basis of the estimated residual terms is widely applicable to other experimental sites, even when some of the carbon fluxes and stock changes are not measured independently.
AB - A synthesis of five years (2006–2010) of data on carbon cycling in a temperate deciduous forest, Sorø (Zealand, Denmark) was performed by combining all available data from eddy covariance, chamber, suction cups, and biometric measurements. The net ecosystem exchange of CO2 (NEE), soil respiration, tree growth, litter production and leaching of dissolved inorganic and organic carbon were independently estimated and used to calculate other unmeasured ecosystem carbon budget (ECB) components, based on mass balance equations. This provided a complete assessment of the carbon storage and allocation within the ecosystem. The results showed that this temperate deciduous forest was a moderate carbon sink (258 ± 41 g C m−2 yr−1) with both high rates of gross primary production (GPP, 1881 ± 95 g C m−2 yr−1) and ecosystem respiration (Re, 1624 ± 197 g C m−2 yr−1). Approximately 62% of the gross assimilated carbon was respired by the living plants, while 21% was contributed to the soil as litter production, the latter balancing the total heterotrophic respiration. The remaining 17% were either stored in the plants (mainly as aboveground biomass) or removed from the system as wood yield. The soil organic carbon stock was considered unchanged over the period of observation, given the high degree of uncertainty associated with the small loss detected (33 ± 85 g C m−2 yr−1). The ECB component data were generally consistent, except for one of the derived fluxes, the aboveground autotrophic respiration, which appeared to be higher than expected. The potential causes for this, i.e. underestimation of soil respiration and/or overestimation of Re are discussed. The plausibility analyses reported here, using multiple ECB data sets together with simple mass conservation equations and the evaluation of data consistency on the basis of the estimated residual terms is widely applicable to other experimental sites, even when some of the carbon fluxes and stock changes are not measured independently.
KW - ABOVEGROUND BIOMASS
KW - ALLOCATION
KW - autotrophic
KW - autotrophic respiration
KW - balance
KW - biomass
KW - BUDGET
KW - C
KW - Carbon
KW - CARBON BUDGET
KW - carbon cycling
KW - carbon flux
KW - CARBON STORAGE
KW - chamber
KW - CO2
KW - CONSERVATION
KW - cycling
KW - deciduous
KW - DECIDUOUS FOREST
KW - Denmark
KW - ECOSYSTEM
KW - ECOSYSTEM CARBON
KW - Ecosystem respiration
KW - eddy covariance
KW - EXCHANGE
KW - flux
KW - FLUXES
KW - forest
KW - GROSS PRIMARY PRODUCTION
KW - GROWTH
KW - heterotrophic
KW - heterotrophic respiration
KW - leaching
KW - litter
KW - MASS-BALANCE
KW - measurement
KW - NEE
KW - NET ECOSYSTEM
KW - net ecosystem exchange
KW - organic carbon
KW - ORGANIC-CARBON
KW - PLANT
KW - plants
KW - potential
KW - production
KW - RATES
KW - respiration
KW - sink
KW - soil
KW - soil respiration
KW - storage
KW - SYSTEM
KW - temperate
KW - TEMPERATE DECIDUOUS FOREST
KW - TREE
KW - TREE GROWTH
KW - UNCERTAINTY
KW - YIELD
U2 - 0.1016/j.agrformet.2013.07.012
DO - 0.1016/j.agrformet.2013.07.012
M3 - Journal article
VL - 181
SP - 94
EP - 107
JO - Agricultural and Forest Meteorology
JF - Agricultural and Forest Meteorology
SN - 0168-1923
ER -
ID: 129023592