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Height-diameter equations for sixteen tree species in the central western Willamette Valley of Oregon

Creator:: Wang, Chao-huan and Hann, David W.
Abstract:: Equations for predicting tree height as a function of diameter outside bark at breast height are presented for 16 tree species from the central western Willamette Valley of Oregon. Foresters can use these "height-diameter" equations to avoid the time consuming task of measuring heights of all individual trees in an...
Resource Type:: Technical Report
Full Text:: , national origin, handicap, marital ti status, or religion. Forest Research Laboratory College of

Equations for predicting height to crown base for fourteen tree species in southwest Oregon

Creator:: Ritchie, Martin W., Hann, David W., and Oregon State University. Forest Research Laboratory
Abstract:: Equations are presented for predicting height to crown base (or bole ratio) for fourteen species of trees common to the mixed-conifer zone of southwest Oregon. Nonlinear regression was used to fit a weighted logistic function for each species. The independent variables include height, crown competition factor in larger trees, stand...
Resource Type:: Research Paper
Full Text:: /EARCH LAS College of Forestry Oregon State University The Forest Research Laboratory of Oregon State

Height-diameter equations for seventeen tree species in southwest Oregon

Creator:: Larsen, David R., Hann, David W., and Oregon State University. Forest Research Laboratory
Abstract:: Equations for predicting total height as a function of diameter at breast height are presented for 17 tree species from southwest Oregon. Because basal area and site index often influence tree height, additional equations are presented which may include either or both of these as independent variables. Equation coefficients were...
Resource Type:: Technical Report
Full Text:: other Forest Research Laboratory publications are available from: Forestry Business Office College of

Nonlinear equations for predicting diameter and squared diameter inside bark at breast height for Douglas-fir

Creator:: Ritchie, Martin W., Hann, David W., and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: . Forest Research Laboratory College of Forestry Oregon State University Corvallis, OR 97331-5704

Dominant-height-growth and site-index equations for Douglas-fir and ponderosa pine in southwest Oregon

Creator:: Hann, David W., Scrivani, John A., Oregon State University. Forest Research Laboratory, and Southwest Oregon Forestry Intensified Research Program
Resource Type:: Technical Report
Full Text:: Simulation. J. Fries, ed. Department of Forest Yield Research, Royal College of Forestry, Stockholm, Sweden

Equations for predicting basal area increment in Douglas-fir and grand fir

Creator:: Ritchie, Martin W., Hann, David W., and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: Simulation. (J. Fries, ed.). Royal College of Forestry, Stockholm. Research Note 30. 379 p. PAINE, D.P., and

Predicting merchantable volume in cubic feet to a variable top and in Scribner board feet to a 6-inch top for six major conifers of southwest Oregon

Creator:: Walters, David K., Hann, David W., and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: State University. The Forest Research Laboratory of Oregon State University was established by the

Equations and tables predicting gross total stem volumes in cubic feet for six major conifers of southwest Oregon

Creator:: Hann, David W., Walters, David K., Clyde, Merlise A., and Oregon State University. Forest Research Laboratory
Abstract:: Equations and tables predicting gross total stem volumes in cubic feet are presented for Douglas-fir, grand fir, white fir, ponderosa pine, sugar pine, and incense-cedar. The data were gathered in second-growth, mixed-conifer stands of southwest Oregon. The basic equations use diameter outside bark at breast height and total tree height...
Resource Type:: Technical Report
Full Text:: other Forest Research Laboratory publications are available from: Forestry Business Office College of

Enhanced height-growth-rate equations for undamaged and damaged trees in southwest Oregon

Creator:: Hann, David W., Hanus, Mark L., and Oregon State University. Forest Research Laboratory
Abstract:: Equations for predicting the 5-yr height growth rate of a tree are presented for six conifer species from southwest Oregon. Equations for the combination of undamaged and damaged trees were estimated with weighted nonlinear regression techniques. These equations are being incorporated into the new southwest Oregon version of ORGANON, a...
Resource Type:: Technical Report
Full Text:: Research Laboratory of Oregon State University, established by the Oregon Legislature, conducts research

Equations for predicting height-to-crown-base, 5-year diameter-growth rate, 5-year height-growth rate, 5-year mortality rate, and maximum size-density trajectory for Douglas-fir and western hemlock in the coastal region of the Pacific Northwest

Creator:: Hann, David W., Marshall, David D., Hanus, Mark L., and Oregon State University. Forest Research Laboratory
Abstract:: Using existing permanent research plot data, we developed equations for predicting height-to-crown-base (HCB), 5-yr diametergrowth rate (delta D), 5-yr height-growth rate (delta H), 5-yr mortality rate (PM), and the maximum size-density trajectory for Douglasfir and western hemlock in the coastal region of the Pacific Northwest. With the exception of the...
Resource Type:: Technical Report
Full Text:: Communications Group. Recycled Paper The Forest Research Laboratory of Oregon State University, established by

Enhanced diameter-growth-rate equations for undamaged and damaged trees in southwest Oregon

Creator:: Hann, David W., Hanus, Mark L., and Oregon State University. Forest Research Laboratory
Abstract:: Equations for predicting the 5-yr diameter-growth rate of a tree are presented for eight conifer and nine hardwood tree species from southwest Oregon. Equation parameters for undamaged and damaged trees combined were estimated by weighted nonlinear regression. The resulting equation for Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] explained more than 71%...
Resource Type:: Technical Report
Full Text:: Research Laboratory of Oregon State University, established by the Oregon Legislature, conducts research

Enhanced mortality equations for trees in the mixed conifer zone of Southwest Oregon

Creator:: Hann, David W., Hanus, Mark L., and Oregon State University. Forest Research Laboratory
Abstract:: Equations for predicting the probability of a tree's dying in the next 5 years are presented for eight conifer and eight hardwood tree species from southwest Oregon. A logistic equation form was used to characterize the probability of mortality. The parameters of the equation were estimated using weighted, maximum likelihood...
Resource Type:: Technical Report
Full Text:: the mixed conifer zone of southwest Oregon. Research Contribution 34, Forest Research Laboratory

Predicting height to crown base for undamaged and damaged trees in southwest Oregon

Creator:: Hanus, Mark L., Hann, David W., Marshall, David D., and Oregon State University. Forest Research Laboratory
Abstract:: 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...
Resource Type:: Technical Report
Full Text:: . TO ORDER COPIES Copies of this and other Forest Research Laboratory publications are available from

Predicting height for undamaged and damaged trees in southwest Oregon

Creator:: Hanus, Mark L., Hann, David W., and Marshall, David D.
Abstract:: Equations for predicting tree height as a function of diameter outside bark at breast height are presented for various tree species common to southwest Oregon. Data for damaged and undamaged trees were analyzed with weighted nonlinear regression techniques. The effects of specific damaging agents and their severity on the height-diameter...
Resource Type:: Technical Report
Full Text:: University College of Forestry Research Contribution 27 September 1999 PREDICTING HEIGHT FOR UNDAMAGED AND

Height-diameter equations for six species in the coastal regions of the Pacific Northwest

Creator:: Hanus, Mark L., Marshall, David D., and Hann, David W.
Abstract:: 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 “height–diameter” equations to avoid the time-consuming task of measuring heights of all individual trees in an inventory,...
Resource Type:: Technical Report
Full Text:: Forest Research Laboratory publications are available from: Forestry Publications Office College of

Extending southwest Oregon's Douglas-fir dominant height growth equation to older ages

Creator:: Hann, David W. and Oregon State University. Forest Research Laboratory
Abstract:: Hann and Scrivani (1987) developed dominant height growth equations for Douglas- fir in southwest Oregon using stem analysis data sets with an upper age of approximately 125 years at breast height. The objective of this study was to determine whether these equations could be extrapolated for ages of 250 years...
Resource Type:: Technical Report
Full Text:: Forest Research Laboratory Oregon State University College of

Equations for predicting the largest crown width of stand-grown trees in western Oregon

Creator:: Hann, David W. and Oregon State University. Forest Research Laboratory
Abstract:: Largest crown width (LCW) equations for stand-grown trees were developed for 14 tree species found in western Oregon. The equations are used in the growth-and-yield model ORGANON and in the stand-visualization program VIZ4ST. They were constructed such that LCW equals the maximum crown width of open-grown trees when the crown...
Resource Type:: Technical Report
Full Text:: Forest Research Laboratory Oregon State University College of

A key to the literature presenting site-index and dominant-height-growth curves and equations for species in the Pacific Northwest and California

Creator:: Hann, David W. and Oregon State University. Forest Research Laboratory
Abstract:: Summaries from 49 published articles on site-index and dominant-height growth curves and equations are presented for 20 tree species or species groups found in California, Oregon, Washington, British Columbia, southeastern Alaska, Idaho, and western Montana. The summaries are organized by species. Each summary describes the modeling approach, type of curves/equations,...
Resource Type:: Technical Report
Full Text:: Forest Research Laboratory Oregon State University College of

A key to the literature presenting tree volume and taper equations for species in the Pacific Northwest and California

Creator:: Hann, David W. and Oregon State University. Forest Research Laboratory
Abstract:: Summaries from 49 published articles on tree volume and taper equations are presented for 39 tree species found in California, Oregon, Washington, British Columbia, southeast Alaska, Idaho, and western Montana. The summaries are organized by species and then by type of equation (volume or taper). Each summary describes the types...
Resource Type:: Technical Report
Full Text:: Forest Research Laboratory Oregon State University College of

Diameter growth equations for Douglas-fir and grand fir in the western Willamette Valley of Oregon

Creator:: Zumrawi, Abdel Azim, Hann, David W., and Oregon State University. Forest Research Laboratory
Abstract:: Equations for predicting diameter growth are an essential component of single-tree growth and yield models (Munro 1974). Diameter growth predictions are used to characterize individual-tree development and to project the growth of stand basal area and volume. Both diameter growth and basal area growth have been used as the dependent...
Resource Type:: Technical Report
Full Text:: Forest Research Laboratory Oregon State University College of

ScholarsArchive@OSU

Height-diameter equations for sixteen tree species in the central western Willamette Valley of Oregon

Equations for predicting height to crown base for fourteen tree species in southwest Oregon

Height-diameter equations for seventeen tree species in southwest Oregon

Nonlinear equations for predicting diameter and squared diameter inside bark at breast height for Douglas-fir

Dominant-height-growth and site-index equations for Douglas-fir and ponderosa pine in southwest Oregon

Equations for predicting basal area increment in Douglas-fir and grand fir

Predicting merchantable volume in cubic feet to a variable top and in Scribner board feet to a 6-inch top for six major conifers of southwest Oregon

Equations and tables predicting gross total stem volumes in cubic feet for six major conifers of southwest Oregon

Enhanced height-growth-rate equations for undamaged and damaged trees in southwest Oregon

Equations for predicting height-to-crown-base, 5-year diameter-growth rate, 5-year height-growth rate, 5-year mortality rate, and maximum size-density trajectory for Douglas-fir and western hemlock in the coastal region of the Pacific Northwest

Enhanced diameter-growth-rate equations for undamaged and damaged trees in southwest Oregon

Enhanced mortality equations for trees in the mixed conifer zone of Southwest Oregon

Predicting height to crown base for undamaged and damaged trees in southwest Oregon

Predicting height for undamaged and damaged trees in southwest Oregon

Height-diameter equations for six species in the coastal regions of the Pacific Northwest

Extending southwest Oregon's Douglas-fir dominant height growth equation to older ages

Equations for predicting the largest crown width of stand-grown trees in western Oregon

A key to the literature presenting site-index and dominant-height-growth curves and equations for species in the Pacific Northwest and California

A key to the literature presenting tree volume and taper equations for species in the Pacific Northwest and California

Diameter growth equations for Douglas-fir and grand fir in the western Willamette Valley of Oregon

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