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Article

Carbon Sequestration in Mixed Deciduous Forests: The Influence of Tree Size and Species Composition Derived from Model Experiments

1
Department of Ecological Modelling, Helmholtz Centre for Environmental Research—UFZ Leipzig, 04318 Leipzig, Germany
2
Institute of Environmental Research, Institute of Mathematics, University of Osnabrück, 49076 Osnabrück, Germany
3
German Centre for Integrative Biodiversity Research (iDiv), Halle-Jena-Leipzig, 04103 Leipzig, Germany
4
Department of Computational Hydrosystems, Helmholtz Centre for Environmental Research—UFZ Leipzig, 04318 Leipzig, Germany
*
Author to whom correspondence should be addressed.
Academic Editors: Herman H. Shugart, Guy R. LaRocque, Weifeng Wang, Vladimir Shanin and Olga Viedma
Forests 2021, 12(6), 726; https://doi.org/10.3390/f12060726
Received: 24 March 2021 / Revised: 20 May 2021 / Accepted: 28 May 2021 / Published: 2 June 2021
(This article belongs to the Special Issue Simulation Models of the Dynamics of Forest Ecosystems)
Forests play an important role in climate regulation due to carbon sequestration. However, a deeper understanding of forest carbon flux dynamics is often missing due to a lack of information about forest structure and species composition, especially for non-even-aged and species-mixed forests. In this study, we integrated field inventory data of a species-mixed deciduous forest in Germany into an individual-based forest model to investigate daily carbon fluxes and to examine the role of tree size and species composition for stand productivity. This approach enables to reproduce daily carbon fluxes derived from eddy covariance measurements (R2 of 0.82 for gross primary productivity and 0.77 for ecosystem respiration). While medium-sized trees (stem diameter 30–60 cm) account for the largest share (66%) of total productivity at the study site, small (0–30 cm) and large trees (>60 cm) contribute less with 8.3% and 25.5% respectively. Simulation experiments indicate that vertical stand structure and shading influence forest productivity more than species composition. Hence, it is important to incorporate small-scale information about forest stand structure into modelling studies to decrease uncertainties of carbon dynamic predictions. View Full-Text
Keywords: forest model; species-mixed deciduous temperate forest; carbon fluxes; structure; tree size; species composition; FORMIND; eddy covariance forest model; species-mixed deciduous temperate forest; carbon fluxes; structure; tree size; species composition; FORMIND; eddy covariance
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MDPI and ACS Style

Holtmann, A.; Huth, A.; Pohl, F.; Rebmann, C.; Fischer, R. Carbon Sequestration in Mixed Deciduous Forests: The Influence of Tree Size and Species Composition Derived from Model Experiments. Forests 2021, 12, 726. https://doi.org/10.3390/f12060726

AMA Style

Holtmann A, Huth A, Pohl F, Rebmann C, Fischer R. Carbon Sequestration in Mixed Deciduous Forests: The Influence of Tree Size and Species Composition Derived from Model Experiments. Forests. 2021; 12(6):726. https://doi.org/10.3390/f12060726

Chicago/Turabian Style

Holtmann, Anne, Andreas Huth, Felix Pohl, Corinna Rebmann, and Rico Fischer. 2021. "Carbon Sequestration in Mixed Deciduous Forests: The Influence of Tree Size and Species Composition Derived from Model Experiments" Forests 12, no. 6: 726. https://doi.org/10.3390/f12060726

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