2 edition of Production and costs of cut-to-length thinning found in the catalog.
Production and costs of cut-to-length thinning
L. D. Kellogg
by Oregon State University, Forest Research Laboratory in Corvallis, Or
Written in English
Young Douglas-fir stands were commercially thinned to achieve vegetation- and wildlife-related objectives. Harvesting and forwarding production and costs were compared among three mechanized thinning treatments: light thin [(115 residual trees per acre (tpa)], light thin with 0.5-ac openings (92 residual tpa), and heavy thin (53 residual tpa). The sites were 40- to 50-yr-old stands in the Willamette National Forest in the Cascade Mountains of central western Oregon. 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. Harvesting and forwarding costs did not differ significantly between light and heavy treatments, but were higher in the light-thin-with- openings treatment. Total thinning costs among the three treatments ranged from $28.08 to $34.62/100 ft3.
|Statement||by Loren D. Kellogg, Ben Spong.|
|Series||Research contribution / Oregon State University, Forest Research Laboratory -- 47., Research contribution (Oregon State University. Forest Research Laboratory) -- 47.|
|Contributions||Spong, Ben., Oregon State University. Forest Research Laboratory.|
|The Physical Object|
|Pagination||23 p. :|
|Number of Pages||23|
Cut-to-length logging (CTL) is a mechanized harvesting system in which trees are delimbed and cut to length directly at the is typically a two-man, two-machine operation with a harvester felling, delimbing, and bucking trees and a forwarder transporting the logs from the felling to a landing area close to a road accessible by trucks. Get this from a library! Skyline thinning production and costs: experience from the Willamette Young Stand Project. [L D Kellogg; Mark Miller; Eldon D Olsen; Oregon State University. Forest Research Laboratory.] -- Production rates and costs for skyline harvesting were examined over a range of residual thinning intensities, operational methods, and sites.
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Harvesting and forwarding costs did not differ significantly between light and heavy treatments, but were higher in the light-thin-with- openings treatment. Total thinning costs among the three treatments ranged from $ to $/ ft³. Harvesting and forwarding production and costs were compared among three mechanized thinning treatments: light thin [( residual trees per acre (tpa)], light thin with ac openings (92 residual tpa), and heavy thin (53 residual tpa).
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Many are easy-to-implement quick /5(5). When funds run thin, can you afford to chop the one and only staff developer or the account managers. With a limited budget and a small team, the best solution may be to limit production costs. Evaluation of alternative cut-to-length harvesting technology for native forest thinning in Australia.
thinning production and costs between silvicultural treatments, L.D. and. Impact of Whole-Tree and Cut-to-Length Harvesting on Postharvest Condition and Logging Costs for Early Commercial Thinning in Maine and unit cost of production.
Results show significantly more. The stand had missed the ideal time to undertake a thin-to-waste operation and consequently the cost had increased to $ per hectare according to forest manager Tim Hinton. In contrast, the production thinning project is currently returning a small profit to the forest owner.
selected from Black Sea and Aegean regions, the cut-to-length system using four sawyers and a forwarder produced wood on the truck at the lowest cost, $/m 3, and $ File Size: 2MB. In the Nordic countries annual production capacities of 60, m 3 are typical when operating in clear felling conditions, and f to 50, m 3 when working in a mix of clear felling and partial cutting (e.g., thinning) conditions.
Since the components of the system are in balance. Mechanical thinning reduced labor costs as compared with hand-thinning control and increased crop value due to larger fruit size. Mechanical blossom/fruitlet removal ranged from 14% to 70%, according to rotor and vehicle speeds and labor requirement for follow-up hand thinning was reduced by 29% to 75%.Cited by: 5.
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therefore, cost of production. For trees whose average volume (size) was 7 to 18 W. production ranged from to Wper productive machine hour. The cycle time for processing trees into bunches to forward to a landing ranged from about 1 minute to minutes per tree (average: minutes).Cited by: Suitable for black and white printing.
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Abstract. Fuel-reduction treatments on steep slopes across federal forests of the western United States have been limited by the high costs associated with cable logging on steeper slopes combined with poor market prospects for small-diameter material (BoldingRummerHan et al.
).The emergence of tethered cut-to-length harvesting systems Cited by: 2.However, many highly productive commercial orchards today have trees per acre and higher density could be anything over trees per acre. For the purposes of this publication, there are several characteristics in addition to tree number that are included in a high density orchard system.Depreciation = 2 * Straight line depreciation percent * book value at the beginning of the accounting period.
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