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): Paul D. AndersonDavid J. Larson; Samuel S. Chan
    Date: 2007
    Source: Forest Science. 53(2): 254-269
    Publication Series: Scientific Journal (JRNL)
    PDF: View PDF  (2.12 MB)

    Description

    Thinning of 30- to 70-year-old Douglas-fir (Psuedotsuga menziesii [Mirb.] Franco) stands is a common silvicultural activity on federal forest lands of the Pacific Northwest, United States. Empirical relationships among riparian functions, silvicultural treatments, and different riparian buffer widths are not well documented for small headwater streams. We investigated buffer width and density management effects on ripairan microclimates of headwater streams in Oregon. Spatial variations in stand density, canopy cover, and microclimate were measured along transects extending from stream center upslope into thinned stands, patch openings, or unthinned stands, with riparian buffers tanging from < 5 m up to 150 m width. For treated stands, summer mean daily air temperature maxima were 1 to 4°C higher than in unthinned stands. With buffers 15 m or greater width, daily maximum air temperature above stream center was less than 1°C greater, and daily minimum relative humidity was less than 5% lower than for unthinned stands. In contrast, air temperatures were significantly warmer within patch opening (+6 to +9°C), and within buffers adjacent to patch openings (+3°C) topographic slope breaks appear sufficient to mitigate the impacts of upslope thinning on the microclimate above headwater streams.

    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

    Anderson, Paul D.; Larson, David J.; Chan, Samuel S. 2007. Riparian buffer and density management influences on microclimate of young headwater forests of Western Oregon. Forest Science. 53(2): 254-269

    Keywords

    riparian buffers, density management, edge effects, Douglas-fir

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/29650