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Tree Height Tarifs and Volume Estimation Errors in New Brunswick

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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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Document Type: Journal Article

Affiliations: Canadian Forest Service, Pacific Forestry Center, 506 W. Burnside Road, Victoria, British Columbia, V8Z 1M5 Canada, (250)363-0712;, Fax: (250)363-0775

Publication date: 1998-03-01

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  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Northern Journal of Applied Forestry covers northeastern, midwestern, and boreal forests in the United States and Canada.
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