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Performance analysis of primary wood producers in British Columbia using data envelopment analysis

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Despite its importance, performance assessment of the Canadian primary wood products sector has received little attention in the academic literature and business practices. In this research a nonparametric technique, called data envelopment analysis (DEA), was used to evaluate the performance of sawmills in British Columbia in 2002. Individual mills were inspected using different DEA models to capture their technical, scale, and aggregate efficiencies. Log consumption and labor utilization were considered as the inputs and lumber and chip production as the outputs of these models. Although British Columbia sawmills enjoyed high scale efficiency, only 7% of them were aggregately efficient. The results showed possible efficiency improvements by increasing the production and decreasing the labor usage. Post-hoc analyses with two nonparametric statistical tests, median quartile and Kruskal–Wallis, revealed that the average efficiency of sawmills in different British Columbia forest regions varied significantly; however, the number of operating days had no effect on technical efficiency of sawmills at a 5% significance level.

En dépit de son importance, l'évaluation de la performance du secteur primaire canadien des produits forestiers a suscité peu d'intérêt dans la littérature scientifique ou commerciale. Dans cette recherche, une technique non paramétrique appelée analyse d'enveloppement de données (AED) a été utilisée pour évaluer la performance des scieries de la Colombie-Britannique en 2002. Des usines ont été inspectées individuellement à l'aide de divers modèles d'AED, ce qui a permis d'en apprécier l'efficacité technique, d'échelle et globale. La consommation de billes et l'utilisation de la main-d'œuvre ont été utilisées comme intrants et la production de bois d'œuvre et de copeaux comme extrants des modèles. En dépit du fait que les scieries de la Colombie-Britannique ont profité d'une efficacité d'échelle appréciable, seulement 7 % d'entre elles étaient globalement efficaces. Les résultats pointent vers des possibilités d'amélioration de l'efficacité par l'augmentation de la production et l'utilisation de moins de main-d'œuvre. Des analyses a posteriori, à l'aide de deux tests statistiques non paramétriques, les tests du quartile médian et de Kruskal–Wallis, révèlent que l'efficacité moyenne des scieries varie considérablement selon la région forestière en Colombie-Britannique; cependant, le nombre de jours d'opération n'avait aucun effet sur l'efficacité technique des scieries au seuil de signification de 5 %.[Traduit par la Rédaction]

Document Type: Research Article

Publication date: 2005-02-01

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  • Published since 1971, this monthly journal features articles, reviews, notes and commentaries on all aspects of forest science, including biometrics and mensuration, conservation, disturbance, ecology, economics, entomology, fire, genetics, management, operations, pathology, physiology, policy, remote sensing, social science, soil, silviculture, wildlife and wood science, contributed by internationally respected scientists. It also publishes special issues dedicated to a topic of current interest.
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