Carbon-based models of individual tree growth: A critical appraisal

Roux, Xavier Le; Lacointe, André; Escobar‐Gutiérrez, Abraham J.; Dizès, S. Le

doi:10.1051/forest:2001140

Cited by 217 publications

(163 citation statements)

References 130 publications

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“…This study is a first approach toward the future development of a mechanistic growth model for ash based on ecophysiological function [30]. Such a model would improve the current deterministic model for ash [7,36] by allowing predictions of ash growth under different environmental conditions.…”

Section: Resultsmentioning

confidence: 99%

Biomass increment and carbon balance of ash (Fraxinus excelsior) trees in an experimental stand in northeastern France

et al. 2004

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-In this study, we compared the annual biomass increment of ash trees to their annual carbon balance calculated from the end of the growing season in 1994 to the end of the next one in 1995. In 1995, three trees of variable competitive status and aged 25 were studied. Stem, branch and root biomass increments were derived from detailed measurements. Tree crowns were divided vertically into three layers. In each crown layer, the foliage biomass and area were determined, net CO 2 assimilation (A n ) and global radiation (R g ) were measured regularly throughout the growing season. Outside this period, R g was estimated from global radiation measured above the canopy and from estimations of light transmittance. Net assimilation of trees (A N ) was obtained by scaling leaf A n to the tree level, using relations established between A n and R g for each crown layer, the distribution of foliage area, and measured climatic data. Above-and below-ground tree respirations, not measured, were estimated. A n was correlated to R g and potential evapotranspiration. It decreased from the upper to the lower crown layers, but was independent of tree competitive status. Total estimated respiration of trees accounted for about 37% of gross assimilation. The proportion of carbon allocated to the stem was more than 45%. Net productivity of trees obtained from simulated annual carbon fluxes compared reasonably well with the biomass increment of trees.biomass partitioning / carbon assimilation / respiration / scaling / leaf area Résumé -Accroissement en biomasse et bilan de carbone du frêne dans un peuplement expérimental du nord-est de la France. Cette étude avait pour but de comparer l'accroissement annuel en biomasse de frênes à leur bilan de carbone établi par estimation de la photosynthèse et de la respiration sur une année complète (depuis la fin de la saison de végétation 1994 à la fin de celle de 1995). En 1995, trois frênes de différents statuts concurrentiels âgés de 25 ans ont été étudiés. Les accroissements en biomasse de la tige, des branches et des racines ont été obtenus à partir de mesures détaillées. Les houppiers des arbres ont été divisés verticalement en trois strates. Pour chaque strate, les variables suivantes ont été mesurées: la biomasse et la surface foliaires, la photosynthèse et le rayonnement global (R g ) pendant la période de croissance. En dehors de cette période, le rayonnement global a été estimé à partir du rayonnement global hors couvert et de valeurs estimées de la transmittance pour chaque strate. L'assimilation nette des arbres (A N ) a été obtenue en extrapolant l'assimilation nette foliaire (A n ) à partir des relations établies entre A n et R g pour chaque strate du houppier, de la distribution du feuillage par strate et des données climatiques mesurées. La respiration des arbres, non mesurée, a été estimée. L'assimilation nette A n est liée à R g et à l'évapotranspiration potentielle et décroît du haut vers le bas du houppier ; elle est indépendante du statut concurrentiel des arbres. L...

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Section: Resultsmentioning

confidence: 99%

Biomass increment and carbon balance of ash (Fraxinus excelsior) trees in an experimental stand in northeastern France

et al. 2004

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“…This allows the plant to photosynthesize efficiently at the beginning of the growing season. Observational data to fine-tune the allocation to and translocation from the carbohydrate reserve are missing [Le Roux et al, 2001]. However, our scheme enables ORCHIDEE to represent the well-known basic dynamics of this pool [Le Roux et al, 2001]: rapid depletion at the beginning of the growing season, reserve deposition in summer and fall, and partial depletion in winter through maintenance respiration.…”

Section: Carbon Allocationmentioning

confidence: 99%

A dynamic global vegetation model for studies of the coupled atmosphere‐biosphere system

Krinner

Viovy

Noblet‐Ducoudré

et al. 2005

Global Biogeochemical Cycles

1,988

2,055

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[1] This work presents a new dynamic global vegetation model designed as an extension of an existing surface-vegetation-atmosphere transfer scheme which is included in a coupled ocean-atmosphere general circulation model. The new dynamic global vegetation model simulates the principal processes of the continental biosphere influencing the global carbon cycle (photosynthesis, autotrophic and heterotrophic respiration of plants and in soils, fire, etc.) as well as latent, sensible, and kinetic energy exchanges at the surface of soils and plants. As a dynamic vegetation model, it explicitly represents competitive processes such as light competition, sapling establishment, etc. It can thus be used in simulations for the study of feedbacks between transient climate and vegetation cover changes, but it can also be used with a prescribed vegetation distribution. The whole seasonal phenological cycle is prognostically calculated without any prescribed dates or use of satellite data. The model is coupled to the IPSL-CM4 coupled atmosphereocean-vegetation model. Carbon and surface energy fluxes from the coupled hydrologyvegetation model compare well with observations at FluxNet sites. Simulated vegetation distribution and leaf density in a global simulation are evaluated against observations, and carbon stocks and fluxes are compared to available estimates, with satisfying results.

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“…Because little information is available about the growth potential of roots [23], the model simulates root potential demand (PotDemand Root ) as a proportion (RootDemand) of stem potential demand (PotDemand Stem ). Model users may manipulate this proportion.…”

Section: Carbon Demand For Potential Growthmentioning

confidence: 99%

“…Unfortunately, students at all levels have misconceptions about these processes [7,8,16], and have difficulty tracing the flow of matter through biological systems [39]. A variety of simulation models have been developed to explore the interaction among processes involved in plant growth (reviewed in [23,26,34,36]), but professional models of plant growth are not accessible to students who are just beginning to explore the topic. In this paper, we demonstrate the development of a simple simulation model of the leaf, stem, and root growth of Wisconsin Fast Plants (rapid cycling Brassica rapa) by six undergraduate students and their instructor.…”

Section: Introduction To Modeling Plant Growthmentioning

confidence: 99%

Integrating Photosynthesis, Respiration, Biomass Partitioning, and Plant Growth: Developing a Microsoft Excel®-based Simulation Model of Wisconsin Fast Plant (Brassica rapa, Brassicaceae) Growth with Undergraduate Students

Grossman

Berdanier

Custic

et al. 2011

Math. Model. Nat. Phenom.

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Abstract. This paper demonstrates the development of a simple model of carbon flow during plant growth. The model was developed by six undergraduate students and their instructor as a project in a plant ecophysiology course. The paper describes the structure of the model including the equations that were used to implement it in Excel R , the plant growth experiments that were conducted to obtain information for parameterizing and testing the model, model performance, student responses to the modeling project, and potential uses of the model by other students.

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Carbon-based models of individual tree growth: A critical appraisal

Cited by 217 publications

References 130 publications

Biomass increment and carbon balance of ash (Fraxinus excelsior) trees in an experimental stand in northeastern France

Biomass increment and carbon balance of ash (Fraxinus excelsior) trees in an experimental stand in northeastern France

A dynamic global vegetation model for studies of the coupled atmosphere‐biosphere system

Integrating Photosynthesis, Respiration, Biomass Partitioning, and Plant Growth: Developing a Microsoft Excel®-based Simulation Model of Wisconsin Fast Plant (Brassica rapa, Brassicaceae) Growth with Undergraduate Students

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