Skip to Main Content
Logging damage in thinned, young-growth true fir stands in California and recommendations for prevention.Author(s): Paul E. Aho; Gary Fiddler; Mike Srago
Source: Res. Pap. PNW-RP-303. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 12 p
Publication Series: Research Paper (RP)
Station: Pacific Northwest Research Station
View PDF (910 KB)
DescriptionLogging-damage surveys and tree-dissection studies were made in commercially thinned, naturally established young-growth true fir stands in the Lassen National Forest in northern California. Significant damage occurred to residual trees in stands logged by conventional methods. Logging damage was substantially lower in stands thinned using techniques designed to reduce injuries from felling and skidding. A total of 243 wounded white and red firs in 11 stands were felled, dissected, and analyzed for decay. All wounds were infected by decay fungi. Decay losses associated with wounds were 6.8 and 14.0 percent of the gross merchantable Scribner board-foot volume of the red and white firs sampled, respectively. Wound area and age were most closely related to extent of decay. Volumes of cubic- and board-foot decay are given for wounds of various sizes and ages. Recommendations are made for reducing logging damage to residual trees during thinning operations.
- You may send email to firstname.lastname@example.org 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.
CitationAho, Paul E.; Fiddler, Gary; Srago, Mike. 1983. Logging damage in thinned, young-growth true fir stands in California and recommendations for prevention. Res. Pap. PNW-RP-303. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 12 p
KeywordsLogging damage, young-growth stands, thinning effects, decay (wood), coniferae
- Decay losses associated with wounds in commercially thinned true fir stands in northern California.
- Decay in white fir top-killed by Douglas-fir tussock moth.
- Lumber recovery from young-growth red and white fir in northern California.
XML: View XML