Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Wood density-moisture profiles in old-growth Douglas-fir and western hemlock.

    Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): W.Y. Pong; Dale R. Waddell; Lambert Michael B.
    Date: 1986
    Source: Res. Pap. PNW-RP-346. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 36 p
    Publication Series: Research Paper (RP)
    Station: Pacific Northwest Research Station
    DOI: https://doi.org/10.2737/PNW-RP-347
    PDF: View PDF  (1.71 MB)

    Description

    Accurate estimation of the weight of each load of logs is necessary for safe and efficient aerial logging operations. The prediction of green density (lb/ft3) as a function of height is a critical element in the accurate estimation of tree bole and log weights. Two sampling methods, disk and increment core (Bergstrom xylodensimeter), were used to measure the density-moisture complex in wood. The relationship between wood density and height was best described by either quadratic or cubic polynomial functions. Prediction functions for green and dry wood density are presented for old-growth western hemlock and Douglas-fir. Sapwood and heartwood functions were analyzed separately as were trees with and without heartrot.

    Publication Notes

    • You may send email to pnw_pnwpubs@fs.fed.us to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Pong, W.Y.; Waddell, Dale R.; Lambert Michael B. 1986. Wood density-moisture profiles in old-growth Douglas-fir and western hemlock. Res. Pap. PNW-RP-347. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 36 p

    Cited

    Google Scholar

    Keywords

    wood density, moisture content (wood), old-growth stands, Douglas-fir, western hemlock

    Related Search

    XML: View XML
Show More
Show Fewer
Jump to Top of Page