Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"harvesting costs"”.
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Influences of varying stand harvest methods on timber harvesting costs in southwestern Virginia hardwoods
A method was developed for estimating costs of harvesting operations in the hardwood stands of the Appalachian region of southwestern Virginia. The method was then tested on one logging operation to estimate the cost of harvesting a group selection tract as compared to a clearcut. Eight loggers …
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An evaluation of existing and conceptual short-rotation energy plantation harvesting machines and systems
… these plantation characteristics would have on harvesting machine and system design were evaluated. Significant plantation and system characteristics affecting the harvesting of energy biomass include species, spacing, rotation, generation, row and road layout, plantation size, soil type, …
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A case study of the Koller K300 yarder on a national forest timber sale in the Appalachian region
… on machine productivity, and to estimate direct harvesting costs. The average yarding cycle lasted 5.10 minutes and produced 36.1 cubic feet of timber. Lateral yarding consumed an average of 59 percent of the yarding cycle and included 71 percent of the operating delays observed. Log hangups …
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The potential use of 35mm aerial photography in planning a selective mechanized thinning
… accumulating a full load. Productivities and costs of felling, bunching, and skidding per cord of wood were evaluated with computer simulations for three thinning procedures. The costs of planning the thinning by ground methods and photos were compared so that the least cost planning and …
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The Prevalence and Operational Feasibility of Utilizing Pre-commercially Thinned Pine as a Woody Biomass Energy Source
… woody biomass energy may provide landowners and harvesting contractors an opportunity to utilize PCT residues as a woody biomass energy feedstock, which may wholly or partially offset PCT costs. However, little information is available regarding harvestable biomass quantities in PCT stands and …
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The impact of group selection silviculture on timber harvesting cost in the southern Appalachians
… the potential to substantially increase timber harvesting costs over traditional clearcutting. This could exacerbate the below-cost timber sale issue. The objective of this study was to assess the impact of groups election silviculture on timber harvest productivity and cost in hardwood stands …
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Anticipated Impact of a Vibrant Wood-to-Energy Market on the U.S. South's Wood Supply Chain
… of forest landowners, forest industry mills, and harvesting contractors. This study utilized two surveys of southern wood supply chain participants and a designed operational study of an energywood harvest to investigate the impact of an expanded wood-to-energy market on each member of the …