Index Catalog // ScholarsArchive@OSU

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:: TRAJECTORY FOR DOUGLAS-FIR AND WESTERN HEMLOCK IN THE COASTAL REGION OF THE PACIFIC NORTHWEST by David W

Asymptotic height-diameter equations for twenty-four tree species in western Oregon

Creator:: Garman, Steven L. (Steven Lee), 1955-, Acker, Steven A., Ohmann, Janet L., Spies, Thomas A. (Thomas Allen), and Oregon State University. Forest Research Laboratory
Abstract:: Equations for predicting height from diameter outside bark at breast height (DBH) were generated for 24 tree species in western Oregon. The equations were based on the asymptotic Chapman-Richards function. Because geographic location and site productivity may influence height-diameter relationships, height-diameter measures from 8727 plots were first grouped by site...
Resource Type:: Technical Report
Full Text:: - efficients. Because of their mathematical form, however, these equations are deficient for extrapolations

Mortality equations for individual trees in the mixed-conifer zone of southwest Oregon

Creator:: Hann, David W., Wang, Chao-huan, and Oregon State University. Forest Research Laboratory
Abstract:: Models of stand growth and yield must include an estimate of mortality. For individual-tree/distance-independent growth-and-yield models. it is necessary (1) to predict the probability of death of individual trees and (2) to keep stand projections within reasonable biological limits (e.g., the maximum basal area that the stand can achieve). In...
Resource Type:: Technical Report
Full Text:: . 1985. A modeling strategy for the growth projection of managed stands. Canadian Journal of Forest

Reanalysis of the SMC-ORGANON equations for diameter-growth rate, height-growth rate, and mortality rate of Douglas-fir

Creator:: Hann, David W., Marshall, David D., Hanus, Mark L., and Oregon State University. Forest Research Laboratory
Abstract:: Using existing data from untreated research plots, we developed equations for predicting 5-yr diameter-growth rate (ΔD₅), 5-yr height-growth rate (ΔH₅), and 5-yr mortality rate (PM₅) for Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] in the coastal region of the Pacific Northwest. These equations are revisions of the equations constructed in 1995–1997 for...
Resource Type:: Technical Report
Full Text:: i o n 4 9 F o r e s t R e s e a r c h L a b o r a t o r y Reanalysis of the sMC- oRGanon

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 by David W. Hann Mark L. Hanus Editing, word

Equations for predicting the 5-year height growth of six conifer species in southwest Oregon

Creator:: Ritchie, Martin W., Hann, David W., and Oregon State University. Forest Research Laboratory
Abstract:: Equations for predicting individual-tree height growth per 5-year period are presented for Douglas-fir, white fir, grand fir, ponderosa pine, sugar pine, and incense-cedar growing in the mixed-conifer zone of southwest Oregon. The data used to develop the equations came from 3,648 trees sampled from 391 stands in the study area....
Resource Type:: Research Paper
Full Text:: managed stands. Canadian Journal of Forest Research 15:511- 518. CLINE, S.P., A.B. BERG, and H.M. WIGHT

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

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:: Research Laboratory of Oregon State University was established by the Oregon Legis- lature to conduct

ECON : a system for economic analysis with a programmable calculator

Creator:: Oregon State University. Forest Research Laboratory, Elwood, Norman E., and Kincaid, Jonna C.
Resource Type:: Technical Report
Full Text:: .) SCHALLAU, C.H., and M.E. WLRTH. 1980. Reinvestment rate and the analysis of forestry enterprises. Journal

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

ScholarsArchive@OSU

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

Asymptotic height-diameter equations for twenty-four tree species in western Oregon

Mortality equations for individual trees in the mixed-conifer zone of southwest Oregon

Reanalysis of the SMC-ORGANON equations for diameter-growth rate, height-growth rate, and mortality rate of Douglas-fir

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

Equations for predicting the 5-year height growth of six conifer species in southwest Oregon

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

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

ECON : a system for economic analysis with a programmable calculator

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

Limit your search

Academic Affiliation

Creator

Date

Decade

File Format

Language

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search