Author： Magnussen Steen
Publisher： Society of American Foresters
ISSN： 0742-6348
Source： Northern Journal of Applied Forestry, Vol.15, Iss.1, 1998-03, pp. : 7-13
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Abstract
Height tarifs are used as proxies for actual tree heights in the volume compilations of the New Brunswick Forest Inventory. In stands selected for volume sampling, the most appropriate of four height tarifs to use is decided from a small (three to five trees) sample of measured heights and diameters on dominant and codominant trees. Increasing the number of height tarifs from 4 to 17 by simple interpolations appears to be the best strategy for lowering the volume estimation errors. This increase was shown to reduce the volume estimation bias by over 50%. Further increases in the number of tarifs did little to lower the overall bias due to the persistent bias from rounding diameters and heights. North. J. Appl. For. 15(1):7-13.
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