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Damage To Young Douglas Fir Stands From Commercial Thinning With Various Timber Harvesting Systems And Silvicultural Prescriptions
Download Damage To Young Douglas Fir Stands From Commercial Thinning With Various Timber Harvesting Systems And Silvicultural Prescriptions full books in PDF, epub, and Kindle. Read online Damage To Young Douglas Fir Stands From Commercial Thinning With Various Timber Harvesting Systems And Silvicultural Prescriptions ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Production and Costs of Cut-to-length Thinning by : Loren D. Kellogg
Download or read book Production and Costs of Cut-to-length Thinning written by Loren D. Kellogg and published by . This book was released on 2004 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using multiple linear regression equations with indicator variables, we compared both harvesting and forwarding cycle times among treatments. We conducted detailed time studies on a harvester and a forwarder and used these data to develop two regression equations to predict delay-free harvest cycle times and delay-free forwarding cycle times. Delay information was gathered from both shift-level and detailed time studies. Total costs for each treatment were obtained by combining costs for harvesting, forwarding, and moving equipment in and out for the entire operation.
Book Synopsis Tractor Thinning Productivity and Costs by : Loren D. Kellogg
Download or read book Tractor Thinning Productivity and Costs written by Loren D. Kellogg and published by . This book was released on 2006 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Harvesting productivity rates and costs were determined for three silvicultural treatments used in commercial ground-based thinning of young stands to achieve timber management objectives and enhance wildlife habitat. Treatment definitions were based on residual trees per acre (tpa) after thinning. The treatments were light thin (115 residual tpa), light thin with 0.5-ac openings (92 residual tpa), and heavy thin (53 residual tpa). The three study sites were 44- to 46- yr-old stands of Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] located in the Cascade Mountains of west central Oregon. Detailed time studies were conducted on timber fallers and crawler tractors and used to develop multiple linear regression models to predict delay-free felling and skidding cycle times for each site. The independent variables common to the regression models to determine delay-free felling cycle time at all sites were diameter at breast height, number of cuts, and number of limbs cut. Only skidding distance was common to all regression models for determining delay-free skidding cycle time. Total costs for each treatment were obtained by combining felling, skidding, and moving costs for the entire operation. Felling costs ranged from $7.20/CCF to $17.73/CCF. Skidding and loading costs ranged from $15.42/CCF to $38.69/ CCF. The cost and productivity results from this study emphasize the importance for forest managers to consider factors such as volume removed and skidding distance when prescribing alternative silvicultural treatments for young Douglas-fir stands.
Book Synopsis Skyline Thinning Production and Costs by : Loren D. Kellogg
Download or read book Skyline Thinning Production and Costs written by Loren D. Kellogg and published by . This book was released on 1999 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Production rates and costs for skyline harvesting were examined over a range of residual thinning intensities, operational methods, and sites. The sites included three stands of 40- to 50-yr-old Douglas-fir on the Willamette National Forest in the Cascade Mountains of Oregon. Three silvicultural treatments were studied at two sites, and one silvicultural treatment at the third site. Detailed time studies were conducted on manual felling and uphill skyline yarding with small or mid-size yarders. Separate regression equations were developed to predict delay-free felling cycle time and delay-free yarding cycle time at each site. The three silvicultural treatments had no consistent influence on production rates and costs, because the initial stocking levels varied among treatments and the volume harvested did not necessarily correspond to the silvicultural treatment. Cost differences within sites, where operational methods were uniform, were small. Cost differences among sites for each activity, such as felling or yarding, were larger because of differences in operational methods. Total harvesting costs among the three sites were similar, ranging from $58 to $64/100 ft3.
Book Synopsis Proceedings of the International Mountain Logging and 10th Pacific Northwest Skyline Symposium by : John Sessions
Download or read book Proceedings of the International Mountain Logging and 10th Pacific Northwest Skyline Symposium written by John Sessions and published by . This book was released on 1999 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Year in Review for the Pacific Northwest Research Station by : Pacific Northwest Research Station (Portland, Or.)
Download or read book A Year in Review for the Pacific Northwest Research Station written by Pacific Northwest Research Station (Portland, Or.) and published by . This book was released on 1999 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Forest Engineering written by and published by . This book was released on 1994 with total page 1094 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Congressional Record by : United States. Congress
Download or read book Congressional Record written by United States. Congress and published by . This book was released on 1971 with total page 1348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Kelsey Whisky Creek Draft Landscape Management Plan, Associated Medford Resource Management Plan Amendments by :
Download or read book Kelsey Whisky Creek Draft Landscape Management Plan, Associated Medford Resource Management Plan Amendments written by and published by . This book was released on 2003 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effects of Thinning and Similar Stand Treatments on Fire Behavior in Western Forests by :
Download or read book The Effects of Thinning and Similar Stand Treatments on Fire Behavior in Western Forests written by and published by . This book was released on 1999 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Management in Young Forests by : Matthew G. Hunter
Download or read book Management in Young Forests written by Matthew G. Hunter and published by . This book was released on 2001 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1998 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1997 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Dictionary of Forestry by : John A. Helms
Download or read book The Dictionary of Forestry written by John A. Helms and published by Society of American Foresters.. This book was released on 1998 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis All Things Considered by : British Columbia. Ministry of Forests
Download or read book All Things Considered written by British Columbia. Ministry of Forests and published by . This book was released on 1990 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grade level: 4, 5, 6, 7, e, i.
Book Synopsis Payette National Forest (N.F.), McCall Ranger District, Freight Landing Timber Sale by :
Download or read book Payette National Forest (N.F.), McCall Ranger District, Freight Landing Timber Sale written by and published by . This book was released on 1993 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Payette National Forest (N.F.), Fourmile Timber Sale by :
Download or read book Payette National Forest (N.F.), Fourmile Timber Sale written by and published by . This book was released on 1997 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Payette National Forest (N.F.), Hazard Helicopter Timber Sale by :
Download or read book Payette National Forest (N.F.), Hazard Helicopter Timber Sale written by and published by . This book was released on 1993 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
