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Book Factors Influencing Productivity and Cost in the Whole tree Harvesting System

Download or read book Factors Influencing Productivity and Cost in the Whole tree Harvesting System written by and published by . This book was released on 2020 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fully mechanized harvesting systems are the most productive and common harvesting systems in the United States. Stem size, stand density, species composition, silvicultural prescriptions, slope/terrain, and operator skill affect the productivity and cost of a harvesting system. Timber harvest expectations of foresters, landowners, and loggers are dependent on these factors. This article describes the factors affecting the productivity of specific harvesting machines used in whole-tree harvesting and impact on harvesting cost. Landowners will understand the common limitations of a timber harvest, and they can be discussed with a forester or logger.

Book Determining Fixed and Operating Costs of Logging Equipment

Download or read book Determining Fixed and Operating Costs of Logging Equipment written by Edwin S. Miyata and published by . This book was released on 1980 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Cost Control in Forest Harvesting and Road Construction

Download or read book Cost Control in Forest Harvesting and Road Construction written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 1992 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Tropical Forestry Handbook

Download or read book Tropical Forestry Handbook written by Laslo Pancel and published by Springer. This book was released on 2015-12-14 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a cross-section of all outstanding experience in all fields of tropical forestry under a drastically changing environment induced by climate change. It sheds light on the existing know-how and presents it in a concise and efficient way for the scientist and professional in charge of planning, implementing and evaluating forest resources. The Tropical Forestry Handbook provides proven and/or promising alternative concepts which can be applied to solve organizational, administrative and technical challenges prevailing in the tropics. Presented are state of the art methods in all fields concerning tropical forestry. Emphasize is given to methods which are adapted to- and which safeguard - environmental conditions.

Book General Technical Report SO

Download or read book General Technical Report SO written by and published by . This book was released on 1977 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Productivity and Cost of a Cut to length Commercial Thinning Operation in a Northern California Redwood Forest

Download or read book Productivity and Cost of a Cut to length Commercial Thinning Operation in a Northern California Redwood Forest written by Kigwang Baek and published by . This book was released on 2018 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cut-to-length (CTL) harvesting systems have recently been introduced to the redwood forests of California's north coast. These machines are being used to commercially thin dense redwood (Sequoia sempervirens) stands which tend to form clumps of stems that vigorously sprout from stumps after a harvest. One of the challenges is to avoid damaging residual trees which can decrease productivity, increase costs, and lower the market value of trees. The goal of this study was to evaluate the productivity and costs associated with CTL systems used in a redwood forests and use that data to develop equations for predictions. Time and motion study methods were used to calculate the productivity of a harvester and forwarder used during the winter and summer seasons. Regression equations for each machine were developed to predict delay-free cycle (DFC) times. Key factors that influenced productivity for the harvesters was tree diameter and distance between harvested trees. Productivity for the harvesting ranged from 28.8 to 35.6 m3 per productive machine hour (PMH). For the forwarders, the number of logs per load and travel distance were important factors affecting productivity. Forwarder productivity ranged from 22.4 to 23.3 m3 per PMH. Total stump-to-truck costs for CTL harvesting system ranged from US$17.1 to $22.8 per m3.

Book Whole tree Harvesting

Download or read book Whole tree Harvesting written by L. K. Mann and published by . This book was released on 1981 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Effect of Tree and Bundle Size on the Productivity and Costs of Cut to length and Multi stem Harvesting Systems in Eucalyptus Pulpwood

Download or read book The Effect of Tree and Bundle Size on the Productivity and Costs of Cut to length and Multi stem Harvesting Systems in Eucalyptus Pulpwood written by Andrew Mark McEwan and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: There is currently a global increase in Eucalyptus pulpwood plantations. Harvesting systems traditionally utilised in the northern hemisphere are being used in Eucalyptus pulpwood plantations worldwide. However, the small tree size and complexity of debarking Eucalyptus have provided harvesting with productivity and cost challenges not previously experienced in northern-hemisphere conditions. Much research has been invested in these two harvesting methods in northern-hemisphere species and conditions. There is little research available on mechanised processing-machine productivity and costs in Eucalyptus. This investigation aimed to quantify the effect that tree and bundle size has on the productivity of different processing machines in Eucalyptus plantation pulpwood. This was done through regression analysis, whereby productivity models that included tree size and bundle size were constructed. The research also aimed to determine whether or not the multi-stem systems were more cost-effective in smaller tree sizes. The research investigated five mechanised harvesting options that forestry managers could use in Eucalyptus pulpwood plantations. These systems consisted of one CTL system, one full-tree system with single-stem processing and three full-tree systems with multi-stem processing. The CTL system used a harvester to process the trees into logs and to extract them. The full-tree system with single-stem processing used a dangle-head processor (DHP) to process trees into logs. The first full-tree system with multi-stem processing used a chain-flail debrancher debarker (CFDD) to produce debarked and debranched tree lengths, which were slashed into logs. The remaining full-tree, multi-stem systems both produced chips. The first used a chain-flail debrancher debarker chipper (CFDDC) and the second, a CFDD feeding into a stand-alone disc chipper (CFDD & C). The productivity data, measured as m3 per productive machine hour (PMH), was then statistically analysed using regression techniques. Productivity equations were formulated, considering tree size and bundle size, as well as the quadratic functions of these two variables and the interaction between them. Bundle size was only applicable to the multi-stem processing machines. The productivity equations successfully predicted processing-machine productivity, using tree size and bundle size as input variables. Apart from the 0.075 m3 tree size class, the CFDD had the highest overall productivity. The costs of the five systems were then calculated for different tree sizes. No single system was more cost-effective than the others across all tree sizes. In 0.075 m3 trees, the CFDDC system proved the most cost-effective. All systems evidenced high costs in the 0.075 m3 trees, ranging between $19.43 per m3 for the CFDDC system to $28.84 for the harvester system. In 0.40 m3 trees, the cost differences between systems were lower, ranging from .91 per m3 for the DHP system to $11.84 per m3 for the CFDD & C. This study confirms that the CTL system was very expensive to operate in the small tree sizes (0.075 m3). There is a cross-over point at 0.25 m3 per tree, where the CTL system costs become lower than those of the full-tree system. At the 0.40 m3 tree size, the full-tree system is slightly more expensive than the CTL system. Copyright.

Book Whole tree Harvesting

Download or read book Whole tree Harvesting written by T. R. Nisbet and published by . This book was released on 1997 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Harvesting Productivity Relationships for Eastside Forest Management Planning

Download or read book Harvesting Productivity Relationships for Eastside Forest Management Planning written by Xiaoshan Zhang and published by . This book was released on 2000 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book A Study of Factors Affecting Productivity and Cost of Whole tree Chipping in Southern Pine Plantations

Download or read book A Study of Factors Affecting Productivity and Cost of Whole tree Chipping in Southern Pine Plantations written by Carey King Williamson and published by . This book was released on 1975 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: