TAILIEUCHUNG - Báo cáo toán học: "SIMWAL: A structural-functional model simulating single walnut tree growth in response to climate and pruning"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: SIMWAL: A structural-functional model simulating single walnut tree growth in response to climate and pruning. | 571 Ann. For. Sci. 57 2000 571-585 INRA EDP Sciences Original article SIMWAL A structural-functional model simulating single walnut tree growth in response to climate and pruning Philippe BalandieT1- André Lacointeb Xavier Le Rouxb Hervé Sinoquetb Pierre Cruiziatb and Séverine Le Dizèsa b a Cemagref Unité de Recherche Foret et Agroforesterie Groupement de Clermont-Ferrand 24 avenue des Landais BP. 50085 63172 Aubière Cedex France b UMR PIAF INRA - Université Blaise Pascal Domaine de Crouelle 234 avenue du Brezet 63039 Clermont-Ferrand Cedex 02 France Received 8 February 1999 accepted 28 June 1999 Abstract - SIMWAL SIMulated WALnut is a structural-functional tree model developed for single young walnut tree Juglans sp. . It simulates the 3D structure dynamics of the tree and biomass partitioning among its different organs for a period ranging from a few months to several years according to climatic conditions temperature radiation and air CO2 concentration and pruning. The aerial part of the tree is represented by axes split into growth units inter-nodes buds and leaves. The root system is described very coarsely by three compartments taproot coarse root and fine root . Only carbon-related physiological processes . radiation interception photosynthesis respiration photosynthate allocation and reserve storage and mobilisation are taken into account. Water and mineral nutrients are assumed to be optimal. We describe the model and present preliminary tests of its ability to simulate tree architecture dynamics and carbon balance compared with field observations. Data requirements and limits and improvements of the model are discussed. structure function model Juglans pruning Résumé - SIMWAL un modèle d arbre structure-fonction simulant la croissance d un noyer en fonction du climat et de la taille. SIMWAL est un modèle d arbre structure-fonction développé pour le jeune noyer Juglans sp. . Il simule l évolution de la structure 3D de l arbre et la repartition de la .

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