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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:: SPECIES IN THE COASTAL REGIONS OF THE PACIFIC NORTHWEST by Mark L Hanus David D Marshall David W Hann

Crown profile equations for stand-grown western hemlock trees in northwestern Oregon

Creator:: Marshall, David D., Johnson, Gregory P., and Hann, David W.
Abstract:: Crown profile equations were developed for stand-grown western hemlock (Tsuga heterophylla (Raf.) Sarg.) in northwest Oregon. The profile model uses a segmented approach, dividing the crown into an upper and lower portion at the point of the largest crown width (LCW). The model explains about 86% of the variation in...
Resource Type:: Article
Full Text:: northwestern Oregon David D. Marshall, Gregory P. Johnson, and David W. Hann Abstract: Crown profile

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:: Hanus is research assistant, David Hann is professor, and David Marshall is associate professor

Wood density of young-growth western hemlock: relation to ring age, radial growth, stand density, and site quality

Creator:: DeBell, Dean S., Singleton, Ryan, Gartner, Barbara L., and Marshall, David D.
Abstract:: Breast-high stem sections were sampled from 56 western hemlock (Tsuga heterophylla (Raf.) Sarg.) trees growing in 15 plots representing a wide range of tree and site conditions in northwestern Oregon. Growth and wood density traits of individual rings were measured via X-ray densitometry, and relationships of ring density and its...
Resource Type:: Article
Full Text:: , Barbara L. Gartner, and David D. Marshall Abstract: Breast-high stem sections were sampled from 56

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:: W Hann David D Marshall Mark L HanusMark L Hanus Editing, word processing, design, and layout

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:: DAMAGED TREES IN SOUTHWEST OREGON by Mark L Hanus David W Hann David D Marshall A p r i l 2 0 0 0

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:: Hann David D Marshall Mark L Hanus Editing, word processing, design, and layout by Forestry

Oregon State Forester ; Vol. 27, No. 1 (January 1985)

Creator:: OSU Forestry Alumni Association
Abstract:: Annual Magazine of the OSU Forestry Alumni Association.
Resource Type:: Other
Full Text:: Graduate Award In Forestry is David D. Marshall. Without doubt, Dave is the type of in· dividual that

Tarif tables for mountain hemlock developed from an equation of total stem cubic-foot volume

Creator:: Bell, John F., Marshall, David D., Johnson, Gregory P., and Oregon State University. Forest Research Laboratory
Abstract:: Tarif access tables were developed for mountain hemlock [Tsuga mertensiana (Bong.) Carr.] on the Deschutes National Forest in the Central Oregon Cascade Mountains from an equation for cubic-foot volume including top and stump (CVTS). These tables provide access to the comprehensive tree-volume tarif system.
Resource Type:: Technical Report
Full Text:: HEMLOCK JULY 1981 DEVELOPED FROM AN EQUATION OF TOTAL STEM CUBIC-FOOT VOLUME J.F. BELL D.D. MARSHALL

Density, ages, and growth rates in old-growth and young-growth forests in coastal Oregon

Creator:: Tappeiner, John C., Huffman, David W. (William), 1962-, Marshall, David, Spies, Thomas A., and Bailey, John D.
Abstract:: We studied the ages and diameter growth rates of trees in former Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) old-growth stands on 10 sites and compared them with young-growth stands (50-70 years old, regenerated after timber harvest) in the Coast Range of western Oregon. The diameters and diameter growth rates for the...
Resource Type:: Article
Full Text:: in coastal Oregon1 John C. Tappeiner, David Huffman, David Marshall, Thomas A. Spies, and John D

ScholarsArchive@OSU

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

Crown profile equations for stand-grown western hemlock trees in northwestern Oregon

Predicting height for undamaged and damaged trees in southwest Oregon

Wood density of young-growth western hemlock: relation to ring age, radial growth, stand density, and site quality

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

Predicting height to crown base 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

Oregon State Forester ; Vol. 27, No. 1 (January 1985)

Tarif tables for mountain hemlock developed from an equation of total stem cubic-foot volume

Density, ages, and growth rates in old-growth and young-growth forests in coastal Oregon

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