A Red Pine Bark Factor Equation for Michigan

Author: Fowler Gary W.   Damschroder Laura J.  

Publisher: Society of American Foresters

ISSN: 0742-6348

Source: Northern Journal of Applied Forestry, Vol.5, Iss.1, 1988-03, pp. : 28-30

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Abstract

A multiple linear regression equation was developed to predict bark factor for red pine in Michigan as a function of tree height. The equation was validated on independent data sets. The prediction equation yielded average relative errors less than ± 1% at all tree heights. Procedures are described for using the bark factor equation to estimate diameter inside bark from diameter outside bark and vice versa at any tree height. Specific uses of the prediction equation are also discussed. North. J. Appl. For. 5:28-30, March 1988.