Modelling Changes in the Merchantability of Individual Trees in Tropical Rainforest

Vanclay, Jerome K (1991) Modelling Changes in the Merchantability of Individual Trees in Tropical Rainforest. Commonwealth Forestry Review, 70 3: 105-111.

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Author Vanclay, Jerome K
Title Modelling Changes in the Merchantability of Individual Trees in Tropical Rainforest
Journal name Commonwealth Forestry Review
Publication date 1991-01-01
Sub-type Article (original research)
Open Access Status File (Author Post-print)
Volume 70
Issue 3
Start page 105
End page 111
Subject 300803 Natural Resource Management
300604 Management and Environment
Abstract The deterioration of merchantable trees over time is often assumed to be negligible in growth models and yield calculations. Although the annual probability of becoming unmerchantable is small, the cumulative probability over a cutting cycle is significant, and should be included in yield studies. Logistic regression analyses of permanent sample plot data revealed that changing merchantability can be modelled using species, stand basal area, tree size and time since last logging. The equation developed for the rainforests of north Queensland indicates that up to ten percent of trees may become unmerchantable during a forty year cutting cycle.
Keyword merchantable timber
yield prediction
growth modelling
forest management
References JUST, T. E. (1991) Management of tropical rainforests in north Queensland. In: F. H. McKinnell, E. R. Hopkins and J. E. D. Fox (eds) Forest Management in Australia. Surrey Beatty, Chipping Norton, NSW, Australia. pp. 228-239. PAYNE, C. D. (ed.) (1986) The GLIM System. Release 3.77 Manual. Numerical Algorithms Group, Oxford, U.K. 3 vols. PRESTON, R. A. and VANCLAY, J. K. (1988) Calculation of timber yields from north Queensland rainforests. Technical Paper No. 47, Queensland Department of Forestry, Brisbane. 19p. QUEENSLAND DEPARTMENT OF FORESTRY (1983) Rainforest research in north Queensland. Position Paper, Queensland Department of Forestry, Brisbane. 52p. VANCLAY, J. K. (1989) Simulating selection harvesting in tropical rainforest. Journal of Tropical Forest Science 1, 3, 280-294. VANCLAY, J. K. (1990) Effects of selection logging on rainforest productivity. Australian Forestry 53, 3, 200-214.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Agriculture and Food Sciences
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Created: Fri, 26 May 2006, 10:00:00 EST by Jerome K. Vanclay on behalf of Learning and Research Services (UQ Library)