Predicting height to crown base for undamaged and damaged trees in southwest Oregon
By: by Mark L. Hanus, David W. Hann, David D. Marshall.
Contributors: Hann, David W.; Marshall, David D.; Oregon State University. Forest Research Laboratory.
Series: Research contribution -- 29.; Research contribution (Oregon State University. Forest Research Laboratory) -- 29.
Publisher: Oregon State University, College of Forestry, Forest Research Laboratory
Published: 2000
Place of publication: Corvallis, Or
Language: eng
Number of pages: 35
Subjects: Forests and forestry -- Oregon -- Measurement -- Mathematical models.; Trees -- Oregon -- Growth -- Mathematical models.
Description: Equations for predicting height to crown base are presented for tree species from southwest Oregon. Equations for undamaged and damaged trees were estimated with weighted nonlinear regression techniques. The effects of specific damaging agents on the height to crown base were explored, and damage correction factors were estimated. The damage correction factors can be used to correct the predicted crown ratio for specific damaging agents and their severity in samples where damage is noted. These equations are being incorporated into the new southwest Oregon version of ORGANON (ORegon Growth ANalysis and projectiON), a model for predicting the growth of individual trees in forest stands. The equations extend the past model to older stands and stands with a heavier component of hardwood tree species.
Notes: "April 2000."

Includes bibliographical references (p. 30-31).

Also issued online.