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Friday, October 9, 2020 | History

5 edition of Extended rotations and culmination age of coast Douglas-fir found in the catalog.

Extended rotations and culmination age of coast Douglas-fir

Robert O. Curtis

Extended rotations and culmination age of coast Douglas-fir

old studies speak to current issues

by Robert O. Curtis

  • 370 Want to read
  • 21 Currently reading

Published by U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station in [Portland, Or.] (333 S.W. First Ave., P.O. Box 3890, Portland 97208-3890) .
Written in English

    Subjects:
  • Douglas fir -- Northwest, Pacific -- Growth -- Statistics

  • Edition Notes

    StatementRobert O. Curtis
    SeriesResearch paper PNW-RP -- 485, Research paper PNW -- 485
    ContributionsPacific Northwest Research Station (Portland, Or.)
    The Physical Object
    FormatMicroform
    Pagination49 p.
    Number of Pages49
    ID Numbers
    Open LibraryOL13619239M
    OCLC/WorldCa35695768

    Curtis, Robert O., "Extended Rotations and Culmination Age of Coast Douglas-fir: Old Studies Speak to Current Issues," USFS Research Paper PNW-RP, Nov, ; Curtis, Robert O.,"Timber Supply in the Pacific Northwest," JOURNAL OF FORESTRY. The age of culmination for Mean Annual Increment (MAI) in terms of total cubic volume was identified as the “biologically optimal” rotation age for our LONG~FPA and LONG~FSC scenarios. These longer-rotation scenarios included commercial thinning to capture density-driven mortality after age 30 and resulted in a rotation age of 75 years for Cited by: 3.

    Thinning, that is, extended rotation (in this instance – yr), even‐aged management with a single thinning, and overstory retention of 50–85% of pre‐treatment basal area. Basal area at the time of sampling for this condition ranged from to m 2 /ha (mean m 2 /ha).Author: Neil Williams, Matthew Powers. High log prices shortened rotations whereas low prices extended rotations. This can be seen in Figures as the curves for low prices begin at a later rotation age. Site Index also influenced the baseline year, with rotations being shorter for stands of higher SI.

    Fertilization of the 58‐year‐old West Coast Douglas fir stand with kg N ha −1 increased NEP by 64%, from g C m −2 to g C m −2, in the first year. [32] 2. Fertilization resulted in significant N losses in denitrification with total N 2 O loss by the end of . Curtis, R.O. Some simulation estimates of mean annual increment of Douglas-fir: results limitations, and implications for management. USDA Forest Service Pacific Northwest Research Station Research Paper. PNW-RP Curtis, R.O. Extended rotations and culmination age of coast Douglas-fir: old studies speak to current issues.


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Extended rotations and culmination age of coast Douglas-fir by Robert O. Curtis Download PDF EPUB FB2

Franco) in western Washington, western Oregon, and British Columbia. Maximum ages included ranged from about 90 years on high sites to years on a low site. None of the stands had clearly reached culmination of mean annual increment, although some appeared close; periodic annual incre- ments declined only slowly.

Extended rotations and culmination age of coast Douglas-fir: old studies speak to current issues. Res. Pap. PNW-RP Portland, OR: U.S.

Department of Agriculture, Forest Service, Pacific Northwest Research Station. 49 p. texts All Books All Texts latest This Just In Smithsonian Libraries FEDLINK (US) Genealogy Lincoln Collection.

National Emergency Library. Top American Libraries Canadian Libraries Universal Library Community Texts Project Gutenberg Biodiversity Heritage Library Children's Library. Open Library. title = {Extended rotations and culmination age of coast douglas-fir: Old studies speak to current issues.

Forest Service research paper}, author = {Curtis, R.O.}, abstractNote = {Trends of mean annual increment and periodic annual increment were examined in 17 long-term thinning studies in Douglas-fir (Pseuditsuga menziesii var.

menziesii (Mirb.). Get this from a library. Extended rotations and culmination age of coast Douglas-fir: old studies speak to current issues. [Robert O Curtis; Pacific Northwest Research Station (Portland, Or.)]. Extended rotations and culmination age of coast Douglas-fir: old studies speak to current issues / Robert O.

: Robert O. Curtis. Introduction Estimates of mean annual increment (MAI = volume production/total age) and its culmination (maximum) point are important in forest management. The National Forest Management Act of (Public Law ) specifies that rotations on National Forest lands shall approximate age of.

Extended rotation and culmination age of coast Douglas-fir: old studies speak to current issues. Research Paper PNW-RP Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station.

49 p. Google ScholarCited by: Extended rotations and culmination age of coast Douglas-fir: old studies speak to new issues. Research Paper PNW-RP Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station.

49 p. Google Scholar. Extended Rotations and Culmination age of Coast Douglas-fir: Old Studies Speak to Current Issues. Curtis, This is a review of 17 studies that involved thinning of stands, with maximum age up to years. Densities ranged from 52 TPA to TPA.

The focus of this paper is on rotation length and culmination of MAI. Curtis RO () Extended rotations and culmination age of coast Douglas-fir: old studies speak to current issues. Res. Pap. PNW-RP U.S.

Department of Agriculture, Forest Service, Pacific Northwest Research Station, Portland, p Google Scholar. Douglas of the Fir: A Biography of David Douglas Botanist by Athelstan George Harvey. The Douglas of the Fir was the "go to" book when written in and remained so for a very long time.

It was written using the "Journal " as the source. The "Journal" was an 5/5(1). The two Douglas fir varieties grow in very different habitats, as evidenced by their names. Rocky Mountain Douglas firs are the inland variety that grow in the mountainous Pacific Northwest and in the Rocky Mountains.

They are much more tolerant of cold than the coast Douglas fir, which is suited to moist, mild climates on the west coast. In coast Douglas-fir (Pseudotsuga menziesii var.

menziesii (Mirb.) Franco), these extended rotations can be maintained by repeated thinning which maintains relatively constant periodic annual increment for many decades and also provides a variety of structural features which can enhance biodiversity (Curtis and Carey, ).

by:   Curtis RO () Extended rotations and culmination age of coast Douglas fir: old studies speak to current issues. Res Pap PNW-RP USDA Forest Service, Pacific Northwest Research Station, Portland Google ScholarCited by: We addressed these needs by examining the growth and yield of red pine (Pinus resinosa Ait.) in a growing stock experiment in northern Minnesota.

Stands were 85 years old at the onset of this. Full Text; PDF ( K) PDF-Plus ( K) Citing articles; Growth, yield, and structure of extended rotation Pinus resinosa stands in Minnesota, USA. Anthony W. D’Amato, a Brian J. Palik, b Christel C. Kern a b a Department of Forest Resources, University of Minnesota, St.

Paul, MNUSA. b USDA, Forest Service, Northern Research Station, Highway E, Grand Rapids, MNCited by: Vol no Extended rotations and culmination age of coast Douglas-fir: old studies speak to current issues 08/14 by Curtis, Robert O.

One needs the rotation period for each forest type – called the culmination age. (e.g., for Douglas Fir, 90 years on a low site; yrs on a high site in coastal BC, Washington state; Curtis []).

AAC also varies widely due to ratio of old-growth to second-growth timber included in the proposed cutting unit. Age-related decline in forest growth: a synthesis based on canopy reorganization The age-related decline in stand growth is a population phenomenon.

This emergent property results from fundamental structural changes that influence the way that space is occupied and carbon is by:. A new look at an old question-Douglas-fir culmination age.

Western J. of Applied Forestry 7(4): Book review of "The ecology of mixed-species stands of trees," by M.G.R. Cannell, Extended rotation and culmination age of coast Douglas-Fir: Old studies speak to current issues.

Res. Pap.A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text.culmination of mean annual increment (CMAI).

Mean annual increment (MAI) is the average yearly volume growth per acre of a stand. This is computed by dividing the total volume by its age. As the stand increases in age, the MAI also increases until tree-to-tree competition and physiological maturity reduce the rate of Size: KB.