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): Jingxin Wang; Chris B. LeDoux; Pam Edwards; Mark Jones; Mark Jones
    Date: 2005
    Source: Forest Products Journal. 55(11): 37-40.
    Publication Series: Scientific Journal (JRNL)
    Station: Northern Research Station
    PDF: Download Publication  (281.65 KB)


    A mechanized harvesting system consisting of a feller-buncher and a grapple skidder was examined to quantify soil bulk density changes in a central Appalachian hardwood forest site. Soil bulk density was measured using a nuclear gauge pre-harvest and post-harvest systematically across the harvest unit and on transects across skid trails. Bulk density also was measured in the skid trails in a subset of the transects after the first 10 loaded machine passes. Post-harvest soil bulk density of 954.4 kg/m3 was not significantly different from the pre-harvest bulk density of 925.2 kg/m3 across the site. Grapple skidding resulted in significant bulk density changes in the skid trails. Results suggest that most of the soil bulk density changes in the skid trails occurred after the first loaded machine pass. Our findings suggest that the use of tracked feller-bunchers to fell and bunch the trees results in the minimum changes to soil bulk density across a harvest site.

    Publication Notes

    • Check the Northern Research Station web site to request a printed copy of this publication.
    • Our on-line publications are scanned and captured using Adobe Acrobat.
    • During the capture process some typographical errors may occur.
    • Please contact Sharon Hobrla, if you notice any errors which make this publication unusable.
    • 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.


    Wang, Jingxin; LeDoux, Chris B.; Edwards, Pam; Jones, Mark. 2005. Soil bulk density changes caused by mechanized harvesting: A case study in central Appalachia. Forest Products Journal. 55(11): 37-40.

    Related Search

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