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Friday, July 24, 2020 | History

2 edition of Predicting crown weight of coast Douglas-fir and western hemlock found in the catalog.

Predicting crown weight of coast Douglas-fir and western hemlock

J. A. Kendall Snell

Predicting crown weight of coast Douglas-fir and western hemlock

by J. A. Kendall Snell

  • 134 Want to read
  • 6 Currently reading

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

    Subjects:
  • Biomass energy.,
  • Douglas fir.,
  • Western hemlock.

  • Edition Notes

    StatementJ.A. Kendall Snell and Brian F. Anholt.
    SeriesResearch paper PNW -- 281.
    ContributionsAnholt, Brian F., Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
    The Physical Object
    Pagination13 p. :
    Number of Pages13
    ID Numbers
    Open LibraryOL17825426M

    In the southern Coast Range of southwestern Oregon, where elk are nonmigratory and typically occupy the same drainage year-round, elk densities decreased curvilinearly as the proportion of old-growth Douglas-fir-western hemlock forest decreased in 18 drainages (r²=, P. In the forest community below 1, meters, Douglas-fir, lodgepole pine, and western larch predominate. In the valleys, Engelmann spruce and subalpine fir are found. The somewhat lower and much better watered western valleys of the park support western redcedar and western hemlock.

      To the breast height age, we added six years for coast Douglas-fir, four years for lodgepole pine (Pinus contorta Douglas ex Loudon) and seven for western hemlock to estimate each tree's year of origin. These numbers were calculated for each tree species from the linear relation between tree height and age taken from young, natural, open grown Cited by: 2. Cambridge Core - Ecology and Conservation - The Ecology of Seeds - by Michael FennerCited by:

    Ponderosa pine grows in every state west of the Great Plains and in western Canada. It has a total stand greater than any native tree in the western United States except Douglas fir. It grows at elevations between and m, although populations in California do extend almost to sea by: 7. Preliminary crown weight estimates for tanoak, black oak, and Pacific madrone / Seasonal progress of radial growth of Douglas-fir, western redcedar and red alder / View Metadata . - Maka, Jean E. - Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.) - Pacific Northwest Forest and Range Experiment Station (Portland.


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Predicting crown weight of coast Douglas-fir and western hemlock by J. A. Kendall Snell Download PDF EPUB FB2

Predicting crown weight of coast Douglas-fir and western hemlock. 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 Type: Book: All Authors / Contributors.

Generally, drier sites are occupied by Douglas-fir while western redcedar and western hemlock dominate wetter habitats [10,38,]. Inland, grand fir is most abundant on sites averaging 25 inches ( mm) or more annual precipitation that are either too dry for, or beyond the range of, western hemlock and western redcedar [ 14 ].

Douglas fir use book. (Seattle, Wash.: West Coast Lumbermen's Association, ), by West Coast Lumbermen's Association (page images at HathiTrust; US access only) Die Douglas-Fichte und einige andere Nadelhölzer namentlich aus dem nordwest- lichen Amerika in.

Estimating upper stem diameters and volume of Douglas-fir and Western hemlock trees in the Pacific northwest Article (PDF Available) March with Reads How we measure 'reads'. The Timber Cruising Handbook - link to the Forest Service Directives web page that includes links to Forest Service Handbook (FSH) chapters containing timber cruising standards and outline of the approved sample cruise methods used by the USDA Forest Service.

Brown, James K. Weight and density of crowns of Rocky Mountain Conifers. An Adjustable Predictor of Crown Profile for Stand-Grown Douglas-Fir Trees Article (PDF Available) in Forest Science 45(2) May with Reads How we measure 'reads'.

This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. Biomass amounts predicted by generalized models are often not applicable for small regions. Localized allometric models were developed relating tree/biomass components to diameter at breast height (dbh) for coast redwood (Sequoia sempervirens (D.

Don) Endl.) from an industrial timberland in northwestern California, USA. dbh for the candidate trees ranged from cm to cm. Biomass of Cited by: 5. Parameter estimates and fit statistic of the equation for predicting projected leaf area index (LAI, m 2 m −2) for Douglas-fir, western hemlock, western redcedar, and grand fir stands growing on sites located in the central Coast Range and the Cascade foothills of western by: 3.

Full text of "Ecological_Characteristics_of_Old-Growth_Douglas-Fir_Forests" See other formats. Progress 01/01/11 to 12/31/11 Outputs OUTPUTS: The Pacific Northwest Tree Improvement Research Cooperative has four areas of focus: (1) genetics of wood stiffness in Douglas-fir and western hemlock; (2) miniaturized seed orchards (MSOs); (3) Douglas-fir site characterization; and (4) molecular markers for tree breeding.

The wood stiffness and. As the forest industry in British Columbia becomes increasingly dependent on second-growth timber for its raw material supply, the question of wood quality becomes more relevant.

Accelerated growth in forest plantations, coupled with an earlier harvest, will lead to changes in the quality of the timber harvested. The influence of cambial aging, initial spacing, stem taper and growth rate was Cited by: Interior Douglas-fir. White fir. Western larch. Grand fir. Western white pine.

Aspen. Lodgepole pine. Limber pine. Western hemlock. Western hemlock-Sitka spruce. Coastal true fir-hemlock. Western redcedar-western hemlock.

Western redcedar. Pacific Douglas-fir. Douglas-fir-western. Western hemlock Western hemlock-Sitka spruce Coastal true fir-hemlock Western redcedar-western hemlock Western redcedar Pacific Douglas-fir Douglas-fir-western hemlock Port-Orford-cedar Redwood Oregon white oak Douglas-fir-tanoak-Pacific madrone Cottonwood-willow Interior ponderosa pine.

Plant species Mean and max. height (m) Mean and max. diameter (cm) Falls Creek Site Douglas 64 61, 91 Western hemlock 4, 36 4, 27 Toad Creek Road Site Douglas61 74, Western hemlock 7, 45 12, 76 Pacific silver fir 7, 29 12, 46 The Falls Creek Site is located on deep to very deep well-drained soils derived from colluvium.

Douglas- fir continues to be the dominant species in many of the second growth stands. Northern portions of the subregion contain mixtures of Douglas- fir, western hemlock and western white pine, with western redcedar and Sitka spruce occurring sporadically, and Pacific silver fir at higher elevations.

Western hemlock (Tsuga heterophylla) is an important commercial tree species in coastal British Columbia. A series of studies was carried out to further our understanding of western hemlock nutrition, which may ultimately provide for an operational fertilization program involving this species.

Eight immature western hemlock stands were fertilized with additions of N, two levels of P ( and. This study examined the changes in response of first thinning in four Douglas-fir sites in the Coastal Pacific Northwest in multiple positions along stems.

Four installations contain one control plot and four thinning plots that were first thinned between 17 to 34 years during todepending on plot relative : David G Briggs, Rapeepan Kantavichai.

Pacific Northwest Research Station (Portland, Or.): The s survey of forest resources in Washington and Oregon / (Portland, Or.: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, []), also by Constance A.

Harrington (page images at HathiTrust). Prior to this publication, the equations for the Pacific Northwest (Westside) Douglas-fir and Western Hemlock were from Predicting Crown weight of Coast Douglas-fir and Western Hemlock (Snell and Anholt, RP-PNW, March ).

The equations in RP-PNW significantly over-predict crown weights for trees less than 10 inches DBH. Spatial variability of photosynthetically active radiation (PAR) within canopy gaps in an old-growth Douglas-fir/western hemlock forest.

Ecosystems 7 (5): Abstract. During the 20 th century, the Pacific Northwest (western Oregon and Washington, coastal British Columbia, and southeastern Alaska) produced some of the highest quality timber in North America.

Forests were old and trees were large; wood products from this region were easily distinguished from those made from timber produced in other regions in North by: Figure presents a material balance for the 16 inch Douglas-fir tree with the following as­sumptions: (1) The minimum top diameter is 4 inches ( cm).

The weight of wood and bark in the stem above this point was estimated by sub­stituting this diameter into .