Inter-regional variability in site index models for even-aged stands of stone pine (Pinus pinea L.) in Spain

Free access article

Issue		Ann. For. Sci. Volume 60, Number 3, April 2003


Page(s)		259 - 269
DOI		10.1051/forest:2003017

Ann. For. Sci. 60 (2003) 259-269
DOI: 10.1051/forest:2003017

Inter-regional variability in site index models for even-aged stands of stone pine (Pinus pinea L.) in Spain

Rafael Calama^a, Nieves Cañadas^b and Gregorio Montero^a

^a Centro de Investigación Forestal, CIFOR-INIA, Apdo. 8111, 28080 Madrid, Spain
^b Dirección General del Medio Natural, Consejería de Medio Ambiente, Comunidad de Madrid, Princesa, 3. Madrid, Spain

(Received 7 December 2001; accepted 3 June 2002)

Abstract
Data from 96 stem analysis and 37 permanent plots in even-aged stands of stone pine (Pinus pinea L.) in four regions of Spain (Central Range, Northern Plateau, West Andalusia and Catalonia) are used to develop a dominant height growth model for each region. These models are compared to detect similarities or differences in height growth patterns between regions, which will justify the need to build more regional site index curves for the species in Spain. Comparing these models involves homogeneity tests of parameters and a statistical analysis of the bias.

Résumé
Variabilité inter-régionale des modèles de site index pour les peuplements réguliers de pin pignon (Pinus pinea L.) en Espagne. Les données de 96 analyses de tige et de 37 placettes permanentes de pin pignon (Pinus pinea L.) réparties dans quatre régions d'Espagne (Massif central, Plateau de Nord-Castille, Andalousie et Catalogne) ont été utilisées pour le développement d'un modèle de croissance (hauteur dominante) pour chaque région. Les modèles sont comparés entre eux afin de détecter des similarités ou des différences sur la croissance en hauteur entre les peuplements des quatre régions, ce qui pourrait justifier la nécessité de construire des modèles régionaux pour Pinus pinea en Espagne. Pour comparer les modèles entre eux, des tests sur l'homogénéité de paramètres et des analyses statistiques de biais ont été utilisés.

Key words: site index / model / inter-regional / height growth / Pinus pinea

Mots clés : site index / modèle / inter-régional / croissance en hauteur / Pinus pinea

Correspondence and reprints: Rafael Calama Tel.: (34) 91 347 68 68; fax: (34) 91 357 22 93;
e-mail: rcalama@inia.es

© INRA, EDP Sciences 2003

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