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. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): T.B. Harrington
    Date: 2006
    Source: Canadian Journal of Forest Research. 36(10): 2439-2453
    Publication Series: Scientific Journal (JRNL)
    PDF: View PDF  (2.96 MB)

    Description

    Douglas-fir, western hemlock, and western redcedar seedlings were planted in 2001 within clearcuts, shelterwoods, or thinned stands of second-growth Douglas-fir. Understory vegetation was left untreated or removed to provide areas of vegetation control (AVC) of 0, 50, or 100 percent of seedling growing space. Third-year stem volume of seedlings growing in clearcuts was greater than in thinned stands but did not exceed that in shelterwoods (for redcedar) unless AVC was 50 percent or greater (for Douglas-fir) or 100 percent (for hemlock). Results indicate that competition in thinned stands severely limits seedling growth, competition in shelterwoods limits or prevents growth increases after vegetation control, and understory vegetation in clearcuts is just as competitive as shelterwood trees and understory vegetation combined.

    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

    Harrington, T.B. 2006. Five-year growth responses of Douglas-fir, western hemlock, and western redcedar seedlings to manipulated levels of overstory and understory competition. Canadian Journal of Forest Research. 36(10): 2439-2453

    Keywords

    Conifer regeneration, competition, overstory density, vegetation control

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/29742