Adaptation of the GreenLab model for analyzing sink-source relationships in chinese pine saplings

Guo Hong, Letort Véronique, Hong Lingxia, Fourcaud Thierry, Cournède Paul-Henry, Lu Yuanchang, De Reffye Philippe. 2007. Adaptation of the GreenLab model for analyzing sink-source relationships in chinese pine saplings. 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. Los Alamitos : IEEE Computer Society, 236-243. ISBN 0-7695-2851-1 International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications (PMA06). 2, Beijing, Chine, 13 Novembre 2006/17 Novembre 2006.

https://doi.org/10.1109/PMA.2006.32

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Résumé : Since the 1990s, a new generation of models has emerged to simulate tree growth with consideration of both tree structure and functional processes. However, calibration of these functional-structural models (FSMs) often remains an open problem due to the topological complexity of trees and to the heavy measurements required. In this paper, we explore a possible way for dealing with the fitting problem, based on the GreenLab model approach. Detailed organ-level data including topological and geometrical measurements were collected on eight Chinese Pine (Pinus tabulaeformis Carr.) saplings grown near Beijing. Adaptation of GreenLab to introduce a flexible modeling for biomass allocation to ring growth is presented. The main assumptions, such as allometry rules and sink relationships, were investigated. The problem of calibration of a complex branching structure was solved by defining an average tree. The results were interpreted with particular focus on the ones concerning the hidden mechanisms of secondary growth.

Mots-clés Agrovoc : Pinus, croissance, modèle mathématique, modèle de simulation, physiologie végétale, organogénèse, biomasse

Mots-clés complémentaires : Pinus tabulaeformis, Sink effect

Classification Agris : U10 - Informatique, mathématiques et statistiques
F62 - Physiologie végétale - Croissance et développement

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