A simple process-based xylem growth model for describing wood microdensitometric profiles

Deleuze Christine, Houllier François. 1998. A simple process-based xylem growth model for describing wood microdensitometric profiles. Journal of Theoretical Biology, 193 : 99-113.

Autre titre : Un modèle mécaniste simple de croissance du xylème pour la description des profils microdensitométriques du bois

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Economie-gestion; Psychologie-éthologie-ergonomie

Résumé : A mechanistic model of xylem production based on physiological and anatomical assumptions is proposed. It focuses on tracheids and on the main phases of cell development : cell division enlargement and wall thickening. For each phase, the most limiting environmental factors are assessed and their effect is modeled with a weekly time step. Combined with simple process-based stand growth and yield models, which take the mean monthly climatic data into account, the xylem production model provides simulations of infra-annual density profiles along stem radius. Simulations are performed for two sites in Northeastern France, using past climatic data. The outputs are qualitatively discussed and visually compared with the observed microdensitometric profiles of #Pinus sylvestris# and #Picea abies# in these two sites. These models provide a basis for integrating timber quality features into process-based models. They also point to new sources of data that could be used to validate process-based models, and suggest some biological assumptions to understand the infra-annual variability of wood basic density.

Mots-clés Agrovoc : Pinus sylvestris, Picea abies, croissance, xylème, développement biologique, modèle de simulation, bois, densité, variation saisonnière, modélisation

Mots-clés géographiques Agrovoc : France

Classification Agris : U10 - Informatique, mathématiques et statistiques
F62 - Physiologie végétale - Croissance et développement
F50 - Anatomie et morphologie des plantes

Auteurs et affiliations

• Deleuze Christine
• Houllier François, CIRAD-AMIS-AMAP (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/390525/)

Métriques

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