Skip to Main Content
Growth of Douglas-fir near equipment trails used for commercial thinning in the Oregon Coast Range.Author(s): Richard E. Miller; Jim Smith; Paul W. Adams; Harry W. Anderson
Source: Res. Pap. PNW-RP-574. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 33 p
Publication Series: Research Paper (RP)
Station: Pacific Northwest Research Station
Download Publication (520 KB)
DescriptionSoil disturbance is a visually apparent result of using heavy equipment to harvest trees. Subsequent consequences for growth of remaining trees, however, are variable and seldom quantified. We measured tree growth 7 and 11 years after thinning of trees in four stands of coast Douglas-fir (Pseudotsuga menziesii var. menziesii(Mirb.) Franco) where soil disturbance was limited by using planned skid trails, usually on dry soils. The three younger stands had responded to nitrogen fertilizer in the 4 years before thinning, but only one stand showed continued response in the subsequent 7- or 11-year period after thinning. The most consistent pattern observed was greater growth of residual trees located next to skid trails. The older stand also showed greater growth in trees located next to skid trails, whereas tillage of skid trails failed to benefit growth of nearby residual trees for the first 7 years after tillage. We conclude that traffic that compacted soil only on one side of residual trees did not reduce growth of nearby trees.
- You may send email to email@example.com 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.
CitationMiller, Richard E.; Smith, Jim; Adams, Paul W.; Anderson, Harry W. 2007. Growth of Douglas-fir near equipment trails used for commercial thinning in the Oregon Coast Range. Res. Pap. PNW-RP-574. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 33 p
KeywordsCommercial thinning, coast Douglas-fir, equipment trails, tree growth, mitigation
- Soil disturbance and 10-year growth response of coast Douglas-fir on nontilled and tilled skid trails in the Oregon Cascades.
- Initial response of understory vegetation to three alternative thinning treatments
- Eight-year tree growth following prescribed underburning in a western Montana Douglas-fir/western larch stand
XML: View XML