Height-diameter equations for six species in the coastal regions of the Pacific Northwest
By: by Mark L. Hanus, David D. Marshal, David W. Hann.
Contributors: Marshall, David D.; Hann, David W.; Oregon State University. Forest Research Laboratory.
Series: Research contribution / Forest Research Lab, College of Forestry, Oregon State University -- 25.; Research contribution (Oregon State University. Forest Research Laboratory) -- 25.
Publisher: Forest Research Laboratory, College of Forestry, Oregon State University
Published: 1999
Place of publication: Corvallis, OR
Language: eng
Number of pages: 11
Subjects: Trees -- Northwest, Pacific -- Measurement.; Forests and forestry -- Northwest, Pacific -- Measurement.
Description: Three equations for predicting tree height as a function of diameter (outside bark) at breast height are presented for six species found in coastal regions of the Pacific Northwest. Foresters can use these "heightdiameter" equations to avoid the time-consuming task of measuring heights of all individual trees in an inventory, a stand exam, or a timber cruise. Equation coefficients were estimated with weighted nonlinear regression techniques. Because the relationship between a tree's height and diameter depends on the tree's competitive position within the stand, alternative equations, including the average height and average diameter of the 40 largest-diameter trees/ac, are also presented. These equations are used in the Stand Management Cooperative version of ORGANON.
Notes: "August 1999."

Includes bibliographical references (p. 11).

Also issued online.