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PDG-Arena: An ecophysiological model for characterizing tree-tree interactions in heterogeneous and mixed standsuse asterix (*) to get italics
Camille Rouet, Hendrik Davi, Arsène Druel, Bruno Fady, Xavier MorinPlease use the format "First name initials family name" as in "Marie S. Curie, Niels H. D. Bohr, Albert Einstein, John R. R. Tolkien, Donna T. Strickland"
2024
<p>In the context of the ongoing climate and biodiversity crises, mixed forest stands are increasingly considered as a sustainable management alternative to monocultures. We developed a new individual-based and process-based forest growth model, PDG-Arena, to simulate mixed forest functioning and test ecophysiological interactions among trees in mixed stands. The model builds upon the validated ecophysiological stand-scale model CASTANEA and integrates tree competition for light and water. We evaluated the performance of PDG-Arena by comparing the simulated growth with annual dendrochronological growth data from 37 common beech and silver fir monospecific and mixed plots in the French Alps. PDG-Arena showed a slightly better performance than CASTANEA when simulating even-age and monospecific forests (r2 of 32.1 versus 29.5%). When using structure-diverse and species-diverse inventories, PDG-Arena performed better than CASTANEA in pure beech (38.3 versus 22.9%) and mixed stands (40.5 versus 36.3%), but not in pure fir stands (39.8 versus 42.0%). The new model also showed a significant positive effect of species mixing on gross primary production (+5.5%), canopy absorbance (+11.1%) and transpiration (+15.8%). Our results thus show that tree-level process-based models such as PDG-Arena, formally simulating interspecific interactions, can serve as a valuable tool to understand and simulate the carbon, light and water dynamics of mixed stands.</p>
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ecophysiology, process-based modeling, mixed forest, competition, diversity, overyielding, drought, ray-tracing, French Alps
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Functional forest ecology
Nicolas Delpierre, Nicolas.Delpierre@U-Psud.Fr, Charlotte Grossiord, charlotte.grossiord@wsl.ch, Harald Bugmann, harald.bugmann@env.ethz.ch, Maxime Cailleret, maxime.cailleret@inrae.fr, Santiago Sabaté Jorba, santi.sabate@ub.edu, Miquel de Cáceres, m.caceres@creaf.uab.cat, Miquel Caceres [m.caceres@creaf.uab.cat] suggested: Daniel Nadal i Sala <d_nadal@ub.edu>, Maxime Cailleret [maxime.cailleret@inrae.fr] suggested: I would contact Guillermo Gea-Izquierdo from INIA or Christopher Reyer from PIK Potsdam, Christopher Reyer [christopher.reyer@pik-potsdam.de] suggested: Sorry Erwin but I have to decline because of time constraints. However, I talked to my postdoc, Thirza van Laar, and she'll be happy to review the paper. thirza@pik-potsdam.de is her contact., Christopher Reyer [christopher.reyer@pik-potsdam.de] suggested: thanks for inviting me and all the best, Christopher Reyer [christopher.reyer@pik-potsdam.de] suggested: Christopher No need for them to be recommenders of PCI Forest Wood Sci. Please do not suggest reviewers for whom there might be a conflict of interest. Reviewers are not allowed to review preprints written by close colleagues (with whom they have published in the last four years, with whom they have received joint funding in the last four years, or with whom they are currently writing a manuscript, or submitting a grant proposal), or by family members, friends, or anyone for whom bias might affect the nature of the review - see the code of conduct
e.g. John Doe [john@doe.com]
2024-02-12 11:14:08
Erwin Dreyer