Forest Investment Account

Abstract of FII Project R04-076

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Modeling Growth of Juvenile Aspen and White Spruce in Western Boreal Canada

Author(s): Larson, Bruce (University of British Columbia)
Subject: Forestry, Silviculture/Forest Management Systems
Series: Forest Investment Account (FIA) - Forest Science Program


In recent years there has been increased interest in non-clearcut mixedwood silvicultural systems for mixed stands of aspen (Populus tremuloides Michx) and white spruce (Picea glauca (Moench) Voss). In order to implement mixedwood silvicultural systems within the limits of sustainable forest management it is necessary to improve our current poor ability to predict the future yield and stand-structure resulting from this management type. The central aspect of this project is to model growth of aspen and white spruce. Furthermore the goal is to (1) investigate the variability of growth within the western boreal mixedwood; and (2) make the knowledge available for management through the spatially explicit individual tree model SORTIE. This project focuses on juvenile trees (dbh < 10cm) because juvenile trees are a key element in mixed-species uneven-aged management and our current ability to predict juvenile tree growth is very limited.

For further information, please contact Bruce Larson, University of British Columbia (

Updated September 08, 2005 

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