Summary
Published in Canadian Journal of Forest Research 40: 1930-1939
In most large-scale inventories, volume models rely on predicted heights instead of measured heights. The effect of height predictions over volume estimate uncertainty is therefore a crucial issue. In this study, we designed a statistical estimator that enables the propagation of tree height prediction errors into a general volume model. The proposed estimator relies on the assumption that both the volume model and the height-diameter model that provides the height predictions do not exibit any lack of fit. This estimator was tested against a Monte Carlo simulation for 90 plots from three typical forest types in Québec, Canada (hardwood, mixedwood, and softwood). The results show that the estimator provides plot volume predictions with error variances that fit those estimated using the Monte Carlo simulation. The estimator developed in this study may be useful to quickly provide the uncertainty associated with plot volume predictions in large-scale inventories.
Sector(s):
Forests
Categorie(s):
Scientific Article
Theme(s):
Forestry Research, Forests, Silviculture
Author(s)
FORTIN, Mathieu and Josianne De BLOIS
Year of publication :
2010
How to get the publication :
Keywords :
modélisation, propagation de l'erreur, estimateur, sylviculture des forêts naturelles feuillues, sylviculture des forêts naturelles mélangées, sylviculture des forêts naturelles résineuses, variance, volume, article scientifique de recherche forestière, sylviculture et rendement des forêts naturelles - peuplements feuillus, sylviculture et rendement des forêts naturelles - peuplements mélangés, sylviculture et rendement des forêts naturelles - peuplements résineux, silviculture and yield of natural forests - hardwood stands, silviculture and yield of natural forests - mixed stands, silviculture and yield of natural forests - softwood stands, modelling, error propagation, estimator
