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Radiation, temperature, and leaf area explain ecosystem carbon fluxes in boreal and temperate European forests

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Schulze,  E.-D.
Department Biogeochemical Processes, Prof. E.-D. Schulze, Max Planck Institute for Biogeochemistry, Max Planck Society;

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Citation

Van Dijk, A. I. J. M., Dolman, A. J., & Schulze, E.-D. (2005). Radiation, temperature, and leaf area explain ecosystem carbon fluxes in boreal and temperate European forests. Global Biogeochemical Cycles, 19(2), GB2029. doi:10.1029/2004GB002417.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000E-D3A5-0
Abstract
[ 1] We analyzed measurements of net ecosystem exchange of CO2 ( NEE) over 15 European forests ( the EuroFlux data set) to investigate which climate and forest characteristics explain temporal and intersite variations in NEE and its components, gross primary production ( GPP) and respiration ( R). Informed stepwise regression was used to derive a parameter-efficient, empirical model that was consistent with process knowledge. The resulting model required seven site-specific parameters to describe flux behavior at different temporal scales as a function of radiation, temperature, and air humidity. The interpretation appeared robust despite method and data uncertainties, although the data set was probably biased toward well-watered boreal and temperate European forests. Radiation, temperature, and leaf area ( through forest assimilation capacity) appear to be the main drivers of the observed temporal and intersite variation in gross primary production, ecosystem respiration, and net ecosystem exchange. [References: 40]