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- Title
Extracting greater value from subalpine fir (Abies lasiocarpa, (Hook.) Nutt.): some basic properties.
- Authors
Knudson, R. M.; Chow, S.; Lau, K. K.; Lougheed, D. E.; Zaturecky, I.
- Abstract
This paper describes an evaluation of some basic properties of subalpine fir (Abies lasiocarpa, (Hook.) Nutt.). This was the first of a series of studies carried out to identify opportunities to extract maximum value by exploiting the attributes of the species. The amount and proportion of subalpine fir to be harvested in British Columbia is projected to increase significantly, and in some regions reach as high as 30 percent of the softwood harvest, in large part due to the severe impact of the mountain pine beetle (Dendroctonus ponderosae Hopkins) on harvestable age lodgepole pine (Pinus contorta Dougl.). Results from this study indicated that subalpine fir has excellent dimensional stability, particularly in the edge grain (vertical grain) direction. The mean radial shrinkage from green to ovendry moisture content was 3.0 percent, the lowest among the SPF species. A disadvantage of subalpine fir is that it is not a durable wood, but an advantage is that it may prove treatable with new preservative technologies. Based on these characteristic properties of subalpine fir, three margin-added product applications where dimensional stability and durability are important were identified for further study: treated exterior cladding, treated decking, and treated permanent wood foundations (plywood, LVL, and lumber).
- Subjects
BRITISH Columbia; ABIES lasiocarpa; FIR; MOUNTAIN pine beetle; DENDROCTONUS; LUMBER; FORESTS &; forestry; WOOD products
- Publication
Forest Products Journal, 2008, Vol 58, Issue 1/2, p31
- ISSN
0015-7473
- Publication type
Article