Assessment of the three-dimensional architecture of walnut trees using digitising

Sinoquet Hervé, Rivet P., Godin Christophe. 1997. Assessment of the three-dimensional architecture of walnut trees using digitising. Silva Fennica, 31 (3) : 265-366.

Autre titre : Estimation de l'architecture tridimensionnelle du noyer par l'utilisation de la digitalisation

Résumé : A method for the measurement of the three-dimensional (3D) architecture of trees was applied to describe two 2O-year-old walnut trees, one of them is a timber tree while the other is a fruit tree. The method works at the shoot level and simultaneously describes the plant topology, the plant geometry and the shoot morphology. The method uses a 3D digitiser (3SPACE FASTRAK, Polhemus Inc.) associated with software DiplAmi designed for digitiser control and data acquisition management. Plant images may be reconstructed from the data set by using the ray tracing software POV-Ray. Visual comparison between photographs of the walnut trees and images synthesised from digitising was satisfactory. Distribution of basal shoot diameter, as well as leaf area and fruit distributions for both the timber and the fruit tree were non-uniformly distributed in the crown volume. Gradients were likely to be related to the light distribution within the tree. This is in agreement with previous experimental results on several tree species and also with the predictions of tree architecture models based on light-vegetation interactions.

Mots-clés Agrovoc : Juglans regia, modèle végétal, application des ordinateurs, croissance, anatomie végétale, mesure (activité), logiciel, modélisation

Mots-clés complémentaires : Architecture végétale

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

Auteurs et affiliations

• Sinoquet Hervé, INRA (FRA)
• Rivet P.
• Godin Christophe, CIRAD-GERDAT-UNITE DE MODELISATION DES PLANTES (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/389700/)

Métriques

[ Page générée et mise en cache le 2024-04-10 ]