eCite Digital Repository

Geospatial and within tree variation of wood density and spiral grain in Douglas fir


Acuna, MA and Murphy, G, Geospatial and within tree variation of wood density and spiral grain in Douglas fir, Forest Products Journal, 56, (4) pp. 81-85. ISSN 0015-7473 (2006) [Refereed Article]


In many parts of the world, log markets are becoming increasingly competitive and complex. Buyers are demanding, and suppliers are offering, logs that have been cut for very specific end-uses and which may be specified in terms of internal as well as external properties. Optimally matching logs to markets requires good measurements and/or predictions of the wood properties in each stem. This information could be used either at the planning stage or in on-board computers installed in harvesters to enhance bucking and sorting. To assess the geospatial and within-tree variation in wood density and spiral grain in Douglas-fir stems, over 400 wood disks were collected from 17 sites in the Cascade and Coastal Ranges of Oregon. Sites were selected from a range of elevations and aspects. Trees selected at each of the sites were of a similar age (28 to 57 yr) and average size (20 cm to 54 cm diameter at breast height). Disks came from different vertical positions in each tree. No statistically significant relationship between wood density and either elevation or aspect was found. There was evidence of a weak negative association between wood density and the height in the tree where the samples were removed. No statistically significant relationship between height, elevation, or aspect was observed for spiral grain. © Forest Products Society 2006.

Item Details

Item Type:Refereed Article
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Forestry sciences
Research Field:Forestry sciences not elsewhere classified
Objective Division:Plant Production and Plant Primary Products
Objective Group:Forestry
Objective Field:Softwood plantations
UTAS Author:Acuna, MA (Mr Mauricio Acuna)
ID Code:46862
Year Published:2006
Web of Science® Times Cited:14
Deposited By:Architecture
Deposited On:2007-09-05
Last Modified:2010-03-18

Repository Staff Only: item control page