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Tuesday, July 14, 2020 | History

2 edition of Height curves for even-aged stands of Douglas fir found in the catalog.

Height curves for even-aged stands of Douglas fir

Walter Huber Meyer

Height curves for even-aged stands of Douglas fir

by Walter Huber Meyer

  • 107 Want to read
  • 29 Currently reading

Published by U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest Experiment Station in Portland, Or .
Written in English

    Subjects:
  • Forests and forestry -- Measurement.,
  • Douglas fir.

  • Edition Notes

    Statementby Walter H. Meyer.
    ContributionsUnited States. Forest Service. Pacific Northwest Forest Experiment Station.
    The Physical Object
    Pagination3, [6] leaves :
    ID Numbers
    Open LibraryOL17887041M

    Toward new site index curves for Douglas-fir in the Netherlands for predicting the height growth of even-aged forest stands was developed as part of a methodology for modelling stand growth in. A density management diagram for even-aged ponderosa pine stands. A simple index of stand density for Douglas-fir. For. Sci. – Site index and height growth curves for ponderosa.

    height curves which declined past age –an extrapolation past his data that extended to years. Curtis and others (b) upper-slope Douglas-fir height growth curves are closer to ours in a narrow range of moderate site indices ( m), where errors are all less than 2 m (within the range of our data).File Size: 3MB. Height growth and site index curves for Douglas-fir on dry sites in the Willamette National Forest. [Portland, Or.]: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors.

    Simulation of competition for light in even-aged stands of Douglas fir. For. Ecol. Manage., Three versions of an explanatory model to simulate competition between trees within forest stands are presented, based on the distribution of photosynthetically active radiation (PAR) over the trees in the by: To facilitate comparisons of height growth patterns of Douglas-fir and paper birch at the two different sites, their height-over-age curves were plotted together by site in Fig. both sites, paper birch had more rapid early height growth than Douglas-fir, but Douglas-fir continued to grow at a relatively high rate and eventually overtook the height of paper by:


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Height curves for even-aged stands of Douglas fir by Walter Huber Meyer Download PDF EPUB FB2

For Douglas fir in the Pacific Northwest, the commonly used site curves are by King () and Bruce (). In developing his curves, King used a data base of dominant height versus age for individual plots; past dominant heights were obtained by averaging measured heights to whorls at 5 File Size: KB.

Research Paper PNW Height growth and site index curves and equations for managed, even-aged stands of Douglas-fir.

(Pseudotsuga menziesii. (Mirb.) Franco) east of the Cascade Range in Oregon and Washington were derived from stem analysis data from 22 sample plots in Oregon and 10 sample plots in by: Site index and height growth curves for managed, even-aged stands of Douglas-fir east of the Cascades in Oregon and Washington by Cochran, P.

cn; Pacific Northwest Forest and Range Experiment Station (Portland, Or.); United Service. Height Curves for Even-aged Stands of Douglas-fir.

This presented average height over diameter curves by age and site classes, and was seemingly unknown to a number of authors who published on the subject in the s through the s. The original intent was to provide generalized curves that could be used for volume computation.

Pinus ponderosa, Oregon (eastern), Washington (eastern). RESEARCH SUMMARY Research Paper PNW Height growth and site index curves and equations for even-aged managed stands of ponderosa pine.

(Pinus ponderosa. Laws.) east of the Cascade Range in Oregon and Washington were derived from stem analysis data from 27 plots in Oregon and 3 plots in by: Site Index and Height Growth Curves for Cochran, P.

Managed, Even—Aged Stands of Douglas—fir East Of the Cascades in Oregon and Washington. PNW Height Growth and Curtis, R. O., F. Herman, D. DeMars.

Site Index for Douglas-fir in High Elevation Forests Of the Oregon — Washington Cascades. Forest Science. Stand development patterns and growth rates of even-aged mixed stands of Douglas-fir (Pseudotsugamensiesii Mirb.

Franco) and grand fir (Abiesgrandis Dougl. Lindl.) were investigated by stand reconstruction in eastern Washington. Although Douglas-fir dominated the stands early, grand fir of the same age eventually overtook the tallest by: Site index and height growth curves for managed, even-aged stands of white or grand fir east of the Cascades in Oregon and Washington.

USDA, Forest Service. Pacific Northwest Forest and Range Experiment Station Research Paper PNW). Soil Conservation Service. 50 year site index table for Douglas-fir east of the Cascades.

Portland, OR. Candidate stands in which the height growth of even-aged, interior Douglas-fir trees could be examined through stem analysis were identified from Ministry of Forests (MOF) inventory data. The stands had greater than 80% Douglas-fir by volume and were older than 60 years of age.

Field inspection of the selected stands. P.H. CochranSite index and height growth curves for managed even-aged stands of Douglas-fir east of the Cascades in Oregon and Washington U.S.

For. Serv. Res. Pap. PNW (), p. Cited by: Height Growth Rate of Douglas-Fir: A Comparison of Model Forms by using stand-level dominant height growth curves for a single species to estimate a growth effective age (Hann and Ritchie DFSIM is a whole-stand model, applicable to relatively homogeneous even-aged stands that are at least 80 percent Douglas-fir by basal area (exclusive of under- story) arid free from catastrophic mortality or obvious severe by: Gross yields for even-aged stands of Douglas-fir and white or grand fir, east of the cascades in Oregon and Washington by Cochran, P.

cn; Pacific Northwest Forest and Range Experiment Station (Portland, Or.); United Service. tential height growth for stands where height growth has not been retarded by high density or related factors.

They do not represent the average of existing stands. The curves are most ap-propriate for use in constructing yield tables for managed, even-aged stands of ponderosa pine.

Curves are based on measure-ments of the tallest tree in a 1/5. slope Douglas-fir height growth and site index curves in this way. Dahms () built on this basic idea by first fitting, for decadal ages, linear regressions to estimate site index (SI = a0 + a1 HT) and height (HT = b0 + b1 SI), then building age back into the models by defining the slopes of these regressions and the mean height curves in terms.

Site index and height growth curves for managed, even-aged stands of Douglas-fir east of the Cascades in Oregon and Washington / By P. Cochran, United States. Forest Service. and Or.) Pacific Northwest Forest and Range Experiment Station (Portland. Abstract.

Res. Pap. PNW Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 17 p. 20 Cochran, P.H. Site index and height growth curves for managed, even-aged stands of Douglas-fir east of the Cascades in Oregon and Washington.

Res. Pap. PNW Uneven-aged Management in 90 Minutes Height vs. Diameter Growth 13 Douglas-fir grown at three different densities, from Marshall and Curtis, Age (years) Even-aged Stands Group Selection System Group Selection System - Area Control Method of Uneven-aged Management.

Site index and height growth curves for managed, even-aged stands of Douglas-fir east of the Cascades in Oregon and Washington. Portland, Or.: Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, Forest Service, (OCoLC) Material Type: Government publication, National government publication: Document.

The Yield of Douglas-fir in the Pacific Northwest. USDA For. Ser. Tech. Bul. 74p., illus. Pacific Northwest Forest and Range Experiment Station. PSMEG(1): Table 5 of Cochran, P.H.

Gross Yields for Even-aged Stands of Douglas-fir and White or. Grand Fir East of the Cascades in Oregon and Size: KB. A method of viewing stand density as it relates to volume production and tree size is developed in the form of a simple density management diagram applicable to plantations of coastal Douglas-fir Author: Ralph D.

Nyland.Stem analysis data from 20 paper birch and 20 Douglas-fir showed that height of Douglas-fir exceeded height of paper birch at about 50 years after stand establishment at the interior site.To determine site quality using tree height as the indicator, appropriate site trees of each species are selected in a stand.

The site trees’ heights and ages are measured in the field, and then plotted or indexed on species-specific growth curves or tables (see Figure ). These tree height-to-age relationship curves are derived from historical growth and yield field data, and show how the Author: Joan DeYoung.