Covariations between plant functional traits emerge from constraining parameterization of a terrestrial biosphere model

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dc.creatorPeaucelle, Marc
dc.creatorBacour, Cédric
dc.creatorCiais, Philippe
dc.creatorVuichard, Nicolas
dc.creatorKuppel, Sylvain
dc.creatorPeñuelas, Josep
dc.creatorBelelli Marchesini, Luca
dc.creatorBlanken, Peter D.
dc.creatorBuchmann, Nina
dc.creatorJiquan Chen
dc.creatorDelpierre, Nicolas
dc.creatorDesai, Ankur R.
dc.creatorDufrene, Eric
dc.creatorGianelle, Damiano
dc.creatorGimeno‐Colera, Cristina
dc.creatorGruening, Carsten
dc.creatorHelfter, Carole
dc.creatorHörtnagl, Lukas
dc.creatorIbrom, Andreas
dc.creatorJoffre, Richard
dc.creatorKato, Tomomichi
dc.creatorKolb, Thomas E.
dc.creatorLaw, Beverly
dc.creatorLindroth, Anders
dc.creatorMammarella, Ivan
dc.creatorMerbold, Lutz
dc.creatorMinerbi, Stefano
dc.creatorMontagnani, Leonardo
dc.creatorŠigut, Ladislav
dc.creatorSutton, Mark
dc.creatorVarlagin, Andrej
dc.creatorVesala, Timo
dc.creatorWohlfahrt, Georg
dc.creatorWolf, Sebastian
dc.creatorYakir, Dan
dc.creatorViovy, Nicolas
dc.date2019-09
dc.date2023-03-10T14:35:10Z
dc.date2023-03-10T14:35:10Z
dc.date.accessioned2026-06-27T17:15:11Z
dc.descriptionThe mechanisms of plant trait adaptation and acclimation are still poorly understood and, consequently, lack a consistent representation in terrestrial biosphere models (TBMs). Despite the increasing availability of geo‐referenced trait observations, current databases are still insufficient to cover all vegetation types and environmental conditions. In parallel, the growing number of continuous eddy‐covariance observations of energy and CO2 fluxes has enabled modellers to optimize TBMs with these data. Past attempts to optimize TBM parameters mostly focused on model performance, overlooking the ecological properties of ecosystems. The aim of this study was to assess the ecological consistency of optimized trait‐related parameters while improving the model performances for gross primary productivity (GPP) at sites.Worldwide.1992–2012.Trees and C3 grasses.We optimized parameters of the ORCHIDEE model against 371 site‐years of GPP estimates from the FLUXNET network, and we looked at global covariation among parameters and with climate.The optimized parameter values were shown to be consistent with leaf‐scale traits, in particular, with well‐known trade‐offs observed at the leaf level, echoing the leaf economic spectrum theory. Results showed a marked sensitivity of trait‐related parameters to local bioclimatic variables and reproduced the observed relationships between traits and climate.Our approach validates some biological processes implemented in the model and enables us to study ecological properties of vegetation at the canopy level, in addition to some traits that are difficult to observe experimentally. This study stresses the need for: (a) implementing explicit trade‐offs and acclimation processes in TBMs; (b) improving the representation of processes to avoid model‐specific parameterization; and (c) performing systematic measurements of traits at FLUXNET sites in order to gather information on plant ecophysiology and plant diversity, together with micro‐meteorological conditions.
dc.identifierhttps://hdl.handle.net/10568/129432
dc.identifier.urihttp://hdl.handle.net/123456789/146770
dc.languageen
dc.publisherWiley
dc.rightsOpen Access
dc.sourcePeaucelle, Marc; Bacour, Cédric; Ciais, Philippe; Vuichard, Nicolas; Kuppel, Sylvain; Peñuelas, Josep; Belelli Marchesini, Luca; Blanken, Peter D.; Buchmann, Nina; Chen, Jiquan; Delpierre, Nicolas; Desai, Ankur R.; Dufrene, Eric; Gianelle, Damiano; Gimeno-Colera, Cristina; Gruening, Carsten; Helfter, Carole; Hörtnagl, Lukas; Ibrom, Andreas; Joffre, Richard; Kato, Tomomichi; Kolb, Thomas E.; Law, Beverly; Lindroth, Anders; Mammarella, Ivan; Merbold, Lutz; Minerbi, Stefano; Montagnani, Leonardo; Šigut, Ladislav; Sutton, Mark; Varlagin, Andrej; Vesala, Timo; Wohlfahrt, Georg; Wolf, Sebastian; Yakir, Dan; Viovy, Nicolas. 2019. Covariations between plant functional traits emerge from constraining parameterization of a terrestrial biosphere model. Global Ecology and Biogeography 28: 1351-1365
dc.subjectplant
dc.subjectmodel
dc.titleCovariations between plant functional traits emerge from constraining parameterization of a terrestrial biosphere model
dc.typeJournal Article

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