Notes: Estimating Wood Volumes for Douglas-fir and White Fir From Outside Bark Measurements
Author: Cochran, P. H.1
Source: Forest Science, Volume 28, Number 1, 1 March 1982 , pp. 172-174(3)
Publisher: Society of American Foresters
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- By this author: Cochran, P. H.
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Abstract:
The ratio of diameter inside bark to diameter outside bark (dib/dob) at first increases up the bole from breast height (bh) and then decreases toward the tip for Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) and white fir (Abies concolor (Gord. & Glend.) Lindl. ex Hildebr.). This change in dib/dob equals 1 - [(dbhob - dbhib)/dob] [0.28/(1.28 - dob/dbhob)] and can be easily inserted into Grosenbaugh's STX program for processing optical dendrometer measurements. Forest Sci. 28:172-174.Keywords: Abies grandis; Abies concolor; Pseudotsuga menziesii; bark measurement; local volume tables
Document Type: Miscellaneous
Affiliations: 1: Principal Research Soil Scientist at Pacific Northwest Forest and Range Experiment Station, USDA Forest Service, Silviculture Laboratory, Bend, OR 97701
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