Modeling crown profile of Douglas-fir in the Western Willamette Valley
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Modeling crown profile of Douglas-fir in the Western Willamette Valley by Joseph T. Mortzheim

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Published .
Written in English


  • Douglas fir -- Oregon -- Willamette River Valley -- Growth -- Mathematical models.,
  • Douglas fir -- Oregon -- Willamette River Valley -- Development -- Mathematical models.

Book details:

Edition Notes

Statementby Joseph T. Mortzheim.
The Physical Object
Pagination73 leaves, bound :
Number of Pages73
ID Numbers
Open LibraryOL15445344M

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Modeling Crown Profile of Douglas-fir in the Western Willamette Valley Introduction The ORGANONmodel predicts the growth and yield of stands within the geographic region of southwest Oregon and the western Willamette Valley. The model can estimate the development of 14 different species of trees in southwest Oregon and 5. Modeling crown structural responses to competing vegetation control, thinning, fertilization, and Swiss needle cast in coastal Douglas-fir of the Pacific Northwest, USA Aaron R. Weiskittel Douglas A. Maguire a, Robert A. Monserud aDepamnent of Forest Science, Oregon Slate University, Corvallis, OR Cited by: ELSEVIER Forest Ecology and Management 96 () Forest Ecology and Management Crown profile models based on branch attributes in coastal Douglas-fir Randy L. Roeh 1, Douglas A. Maguire College of Forest Resources, AR, University of Washington, Seattle, WA , USA Accepted 24 January Abstract Crown size and crown dimensions are important variables for imparting Cited by: Equations are presented that predict individual-tree 5-year diameter growth, outside bark, for Douglas-fir and grand fir in the western Willamette Valley of Oregon.

Equations for predicting the height to crown base of six tree species in the central Willamette Valley of Oregon size-density trajectory for Douglas-fir and western hemlock in the coastal. Douglas-fir trees in some foothills around the Willamette Valley are afflicted with Swiss needle cast. The disease produces a pale overall appearance and sparse crown as individual needles turn.   Abstract. Korean larch (Larix olgensis) is one of the main tree species for afforestation and timber production in northeast r, its timber quality and growth ability are largely influenced by crown size, structure and shape. The majority of crown models are static models based on tree size and stand characteristics from temporary sample plots, but crown dynamic models has Author: Weiwei Jia, Dongsheng Chen. By Brad Withrow-Robinson, Forestry & Natural Resources Extension Agent, Benton, Linn and Polk Counties. Young Douglas-fir trees with dying branches or tops turning brown, then red have become a common sight all around the Willamette Valley this spring.

  Field Burning, DEQ staff John Core Film’s Title Slide Sections - Ground Monitoring Program - Aerial Monitoring Program - Data Analysis - Emission Testin.   Briggs, D.G. The Stand Management Cooperative. Western Forester. 45(2) p8. Modeling crown profile of Douglas-fir in the Western Willamette Valley. M.S. Thesis, Oregon State University, continued establishment and measurement of field installations in Douglas-fir and western hemlock, work in crown modeling and vegetation monitoring. Pacific Northwest Native Plant Profiles Pacific Northwest Native Plant Profile: Erysimum capitatum (Western wallflower) in Oregon it is generally found east of the Cascades as well as westward through the Columbia River Gorge and into the Willamette Valley, In the Douglas-fir/western hemlock ecoregion, consider red alder (Alnus rubra). The drake wood duck is the most colorful of North American ducks. The brown hen has similar features including a crest, distinctive white eye-ring, white belly and purplish-blue iridescence on wing coverts and speculum. Both sexes have a prominent tail that can be a .