Accession Number : AD0696631
Title : SAPWOOD THICKNESS OF DOUGLAS-FIR AND FIVE OTHER WESTERN SOFTWOODS.
Descriptive Note : Forest Service research paper,
Corporate Author : FOREST PRODUCTS LAB MADISON WIS
Personal Author(s) : Lassen,L. E. ; Okkonen,E. A.
Report Date : OCT 1969
Pagination or Media Count : 18
Abstract : Sapwood measurements were made on increment cores extracted at breast height from Douglas-fir, western larch, lodgepole pine, ponderosa pine, western redcedar, and Engelmann spruce trees. The trees sampled were representative of the growth range of each species. Sapwood thickness measurements, of primary interest to preservative treating of forest products, showed an increase with increasing tree diameter. In addition, Douglas-fir sapwood thickness was greater in the Coast type than in the Interior type for trees of the same diameter. Also for Coast Douglas-fir, sapwood thickness decreased with increasing elevation, and trees having the most rapid diameter growth had the thickest sapwood. (Author)
Descriptors : (*TREES, GROWTH(PHYSIOLOGY)), (*WOOD, PRESERVATION), THICKNESS, PROTECTIVE TREATMENTS, FORESTRY
Subject Categories : Forestry
Wood, Paper and Related Forestry Products
Distribution Statement : APPROVED FOR PUBLIC RELEASE