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1 edition of A comparison of site curves for Douglas-fir found in the catalog.

A comparison of site curves for Douglas-fir

Robert O. Curtis

A comparison of site curves for Douglas-fir

by Robert O. Curtis

  • 155 Want to read
  • 6 Currently reading

Published in Portland, Or .
Written in English


Edition Notes

SeriesU.S. Forest Service. Pacific Northwest Forest Experiment Station. U.S. Forest Service research note PNW-37
The Physical Object
Pagination8 p.
ID Numbers
Open LibraryOL25578777M

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A comparison of site curves for Douglas-fir by Robert O. Curtis Download PDF EPUB FB2

Comparison of Douglas-fir site index and height growth curves in the Pacific Northwest. Abstract. Site index and height growth curves produced by the major Douglas-fir (Pseudotsugamenziesii (Mirb.) Franco) site index studies in the Pacific Northwest are graphically io-holding.com by: The objective of this site-curve project was to derive site curves for plantations of Douglas fir.

Site curves are viewed as a family of height over age curves that typify height development. The SMC Type III installations had shown earlier that high densities could dramatically increase height growth (Scott et.

Site Index and Height Growth Curves for Douglas-fir in Managed, Even·-A'ged Stands East of the Cascades in Oregon and Washington. Reference A bstrect. Cochran, P. Site index and height growth curves for managed, even-aged stands of Douglas-fir east of the Cascades in Oregon and Washington.

USDA For. Servo Res. Pap. Site index curves have been developed by plotting heights of different aged trees from study areas throughout a region. Best-fit lines are drawn through the plotted trees, and harmonic curves developed. The curves for King’s yr site index for Douglas-fir, developed from stem analysis of trees in western Washington, are shown in Figure Get print book.

No eBook available. Site Index Curves for Douglas-fir in the Pacific Northwest. James E. King. Weyerhaeuser Forestry Research Center, - Douglas fir - 49 pages.

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Title. How to Use Site Index Curves Site index puts trees of all ages on a relative basis so that the index number has meaning and comparisons can be made.

The lower the index number, regardless of the tree’s current age, the poorer the site; the higher the index number, the better the io-holding.com: Joan DeYoung. Properties and Distortion of Douglas-fir with Comparison to Radiata Pine A thesis submitted in partial fulfilment of the requirement for the degree of Masters of Engineering in Chemical and Process Engineering by Eric Yunxin Wang University of Canterbury Keyword: douglas-fir.

Site index curves and tables for British Columbia: Coastal species. In the BEC context they are placed as seral in comparison to climax Douglas-fir forest on circum-mesic sites, and could possibly be considered as a disclimax.

This guide does not focus on management, which is addressed only via rankings a. Height growth and site index curves for inland Douglas-fir based on stem analysis data and forest habitat type. For. Sci. Google Scholar. Payandeh B. Formulated site index curves for major timber species in io-holding.com by: 4.

Comparison of site index curves developed from Chapman– Richards (CR) and Schumacher (SM) models fit to stem analysis dataset with all measurements (F) and a reduced dataset including only.

was sampled at 31 locations, Douglas- fir at 46, western larch at 37, and lodgepole pine at The means and ranges of site and stand characteristics for the sample are given in Table 1. Site trees, which were selected in a fashion similar to that described by Monserud (), had the following characteristics: (1) dominant crown.

Site index ranged from to m (mean, m) and age ranged from 70 to yr (mean, yr) (Figure 2). COMPARISON WITH EXISTING CURVES The height-growth curves of King () and Bruce () are the most commonly used in the Oregon Coast Range. 50 year site index table for Douglas-fir east of the Cascades.

Portland, OR. USDA, Soil Conservation Service Forestry Technical Note No. (derived from: 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.

USDA, Forest Service. Compare Book Prices and Save Money on Books & Textbooks: Compare book prices to find the best price for new, used and rental books and college textbooks at the major Online Stores. Our Book Price Comparison is free, objective and easy to use.

green Douglas fir of the Pacific coast is called P. tawifoUa, the blue Douglas fir of Colo- rado is called P. glauca, and another form intermediate between the green and blue fornrs is sometimes referred to as P. taxifoUa var. caeaia. There are also a number of varieties of Douglas fir recognized by io-holding.com by: The new curves use a year breast-height (foot) age as a base.

For Douglas-fir, tests showed King’s site index model for Douglas-fir in Washington and Oregon to be unbiased and adequate for Douglas-fir site index estimation in the north coast.

Jul 15,  · 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. io-holding.com 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 io-holding.com by: Keywords: Increment (height), site index.

Douglas-fir, Oregon (Willamette National Forest). This study provides height growth and site index curves for Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) on hot, dry sites in the Willamette National Forest in western Oregon.

Stems of 40 trees were dissected; 27 of the trees were suitable for. Hi Guest. Welcome to io-holding.com - Your one stop site to find all the best book prices for new, used books, textbooks and book rentals at book stores worldwide.

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We search a huge list of retailers in real time to ensure up to the minute best prices and we provide a free unlimited Price Watch service allowing you to save time and money. Height Growth Rate of Douglas-Fir: A Comparison of Model Forms The dominantg height- growth for Duglas-firs exhibits a different pattern than that found with Douglas-fir with the same site.The book search and book price comparison agent is built to ease online book shopping.

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