Saint André Laurent, Hervé Jean-Christophe, Leban Jean-Michel. 2000. Modelling the number of rings in individual logs of Norway spruce. Scandinavian Journal of Forest Research, 15 : 135-143.
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Autre titre : La modélisation du nombre de cernes dans des billons d'épicéa
Résumé : In timber production, there is a need to select the right log for a given end-product. To achieve this objective, individual tree characteristics (total height, diameter at breast height and age) and external measurements made on the log shape were combined. In this study, three possible methods are analyzed to assess the number of annual rings for a given #Picea abies# (L.) Karst. log using modelling. The first method consists of finding a link between the number of rings and the size, the taper and the location of the log in the tree. The second one is based on the log location in the tree and the use of an height-age growth model. The third involves the whorl location inside the log and the use of an individual height-age growth model. The three methods are compared on the basis of the amount of data required by each and error analysis.
Mots-clés Agrovoc : Picea abies, cerne, modèle mathématique, contrôle continu, méthode statistique
Classification Agris : U10 - Informatique, mathématiques et statistiques
K10 - Production forestière
F62 - Physiologie végétale - Croissance et développement
Auteurs et affiliations
- Saint André Laurent, CIRAD-AMIS-AMAP (FRA)
- Hervé Jean-Christophe, ENGREF (FRA)
- Leban Jean-Michel, INRA (FRA)
Autres liens de la publication
Source : Cirad - Agritrop (https://agritrop.cirad.fr/476703/)
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