Estimating Individual Tree Volume with Spiegel Relaskop and Burr and Stroud Dendrometers
Abstract:Cubic-foot volumes obtained from Spiegel Relaskop measurements of 25 shortleaf pines were only 1.6 percent higher than comparable volumes based on Barr and Stroud measurements. Differences between volume estimates with the two dendrometers were related to tree size; the greatest difference occurred in the 6-inch diameter class. Observer differences were larger with the Spiegel Relaskop (3.7 percent) than with the Barr and Stroud (0.5 percent). Separate analyses with Speigel Relaskop data indicate that 4-inch taper step measurements overestimate volume by 1.3 percent as compared to 2-inch taper steps and that the subneiloid algorithm is more accurate than the conoid or paraboloid for volume determination of the whole tree.
Document Type: Journal Article
Affiliations: Forest Biometrician, Forest Research Center, Weyerhaeuser Company, Centralia, Washington
Publication date: September 1, 1975
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- The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.
2015 Impact Factor: 1.476
Ranking: 22 of 66 in forestry
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