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

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.

Bibliographic Details

Main Authors:	Guo, Hong, Letort, Véronique, Hong, Lingxia, Fourcaud, Thierry, Cournède, Paul-Henry, Lu, Yuanchang, De Reffye, Philippe
Format:	conference_item biblioteca
Language:	eng
Published:	IEEE Computer Society
Subjects:	U10 - Informatique, mathématiques et statistiques, F62 - Physiologie végétale - Croissance et développement, Pinus, croissance, modèle mathématique, modèle de simulation, physiologie végétale, organogénèse, biomasse, http://aims.fao.org/aos/agrovoc/c_5890, http://aims.fao.org/aos/agrovoc/c_3394, http://aims.fao.org/aos/agrovoc/c_24199, http://aims.fao.org/aos/agrovoc/c_24242, http://aims.fao.org/aos/agrovoc/c_25189, http://aims.fao.org/aos/agrovoc/c_27791, http://aims.fao.org/aos/agrovoc/c_926,
Online Access:	http://agritrop.cirad.fr/544944/
Tags:	Add Tag No Tags, Be the first to tag this record!