Article (Scientific journals)
Modelling the top-height growth and site index of Norway spruce in Southern Belgium
Perin, Jérôme; Hebert, Jacques; Brostaux, Yves et al.
2013In Forest Ecology and Management, 298, p. 62-70
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Keywords :
Norway spruce; Picea abies; Height growth; Site index; Stem analysis; Modelling
Abstract :
[en] Top-height growth in even-aged stands of Norway spruce (Piceaabies (L.) Karst.) from Southern Belgium was modelled using functions which provide an algebraic solution for site index (SI) calculation. 16 well known growth model formulations were parameterized using a method which accounts for heterogeneous variance and autocorrelation on a dataset composed of stem analysis data completed by measuring the heights of all the branch whorls to allow for accurate height–age estimates. Comparison of the parameterized models showed that the oblique asymptotic function known as the Duplat and Tran-Ha III model was the most efficient on our dataset. Validation of the selected model on permanent sample plot data showed no evidence of bias over the full range of possible age, height, site index and densities encountered in Norway spruce stands of Southern Belgium. The new height growth model described represents a significant improvement over the previous model of Dagnelie et al. (1988), which was found to be unreliable and required the use of an iterative process to estimate SI.
Research center :
University of Liège - Gembloux Agro-Bio Tech - Unit of Forest and Nature Management
Disciplines :
Phytobiology (plant sciences, forestry, mycology...)
Author, co-author :
Perin, Jérôme ;  Université de Liège - ULiège > Forêts, Nature et Paysage > Gestion des ressources forestières et des milieux naturels
Hebert, Jacques ;  Université de Liège - ULiège > Forêts, Nature et Paysage > Gestion des ressources forestières et des milieux naturels
Brostaux, Yves  ;  Université de Liège - ULiège > Sciences agronomiques > Statistique, Inform. et Mathém. appliquée à la bioingénierie
Lejeune, Philippe ;  Université de Liège - ULiège > Forêts, Nature et Paysage > Gestion des ressources forestières et des milieux naturels
Claessens, Hugues ;  Université de Liège - ULiège > Forêts, Nature et Paysage > Gestion des ressources forestières et des milieux naturels
Language :
English
Title :
Modelling the top-height growth and site index of Norway spruce in Southern Belgium
Publication date :
15 June 2013
Journal title :
Forest Ecology and Management
ISSN :
0378-1127
eISSN :
1872-7042
Publisher :
Elsevier Science
Volume :
298
Pages :
62-70
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Accord cadre de recherche et vulgarisation forestières: ACTION 2.2.1. - CROISSANCE, PRODUCTIVITE ET SYLVICULTURE DU DOUGLAS, DE L'EPICEA COMMUN ET DES MELEZES
Funders :
SPW DNF - Service Public de Wallonie. Département de la Nature et des Forêts [BE]
Available on ORBi :
since 28 May 2013

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