Cournède Paul-Henry, De Reffye Philippe.
2007. A generalized poisson model to estimate inter-plant competition for light.
In : Plant growth modeling and applications. Proceedings PMA06 : The Second International Symposium on plant growth modeling, simulation, visualization and applications, Beijing, China, November 13-17, 2006. Fourcaud Thierry (ed.), Zhang Xiao-Peng (ed.). Institut d'automatique-LIAMA, IEEE
Résumé : A new method is proposed to compute the functional ef- fects of competition for light in plant populations. It is based on the estimation of exposed green leaf area for each individual. For this purpose, each individual in the stand is assigned a disk-shaped zone Sp representing its assumed crown projection and competitive neighbours are defined as plants having overlapping disks. We combine the foliage distribution functions of neighbours to compute the prob- abilities of dominance and thus the exposed leaf area for each plant. The computation is fully detailed in the case of uniform distributions (Poisson model). In functional- structural models of plant growth, the exposed leaf area thus obtained can be used to compute biomass production. The method is applied to the GREENLAB model and we present simulation results illustrating the effects of density.
Mots-clés Agrovoc : plante, modèle mathématique, compétition végétale, croissance, feuillage, lumière du jour, modèle de simulation, modélisation environnementale
Classification Agris : U10 - Informatique, mathématiques et statistiques
F62 - Physiologie végétale - Croissance et développement
Auteurs et affiliations
- Cournède Paul-Henry, Ecole centrale Paris (FRA)
- De Reffye Philippe, CIRAD-AMIS-UMR AMAP (FRA)
Autres liens de la publication
Source : Cirad - Agritrop (https://agritrop.cirad.fr/544901/)
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