Cost evaluation of three ground-logging methods in a mixed broadleaved mountainous forest

Aysan Badraghi, Jörn Erler, Seyed A. O. Hosseini, Robert Lang

Abstract


Aim of study: To compare cost and productivity of three ground-based logging methods by skidder: 1, tree length method (TLM), 2, long length method (LLM) and 3, short length method (SLM).

Area of study: A mixed broadleaved mountainous forest stand in the Hyrcanian forests in northern Iran.

Material and methods: To develop time prediction models, all measurements of time were replaced by their decadic logarithms, and on the basis of the developed models, we simulated cost of 11 skidding turns depending on the diameter of the log (DL), skidding distance (SD), and the winching distance (WD) for TLM, LLM, and SLM.

Main results: Our results demonstrated that on average the net costs per extraction of one cubic meter wood (m3) were 3.06, 5.69, and 6.81 €/m3 in TLM, LLM, and SLM, respectively, and the most economical alternative depending on DL, SD and WD was a TLM. Furthermore, the results of simulated models suggest that as long as the diameter of the felled trees is less than 40 cm, the cut-to-length system is not an economical alternative. The cut-to-length method can be applied for trees with larger diameter (more than 40 cm), and in short skidding distance SLM is preferable to LLM but in cases of long skidding distance, LLM is more economical than SLM.

Research highlights: DLand SD were the main causes which influenced the productivity and cost of ground-based logging methods.


Keywords


Tree Length Method; Long Length Method; Short Length Method; Skidding Unit Cost; Logarithm Base 10.

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References


Adebayo AB, 2006. Productivity and cost of cut-to-length and whole-tree harvesting in a mixed- conifer stand. Master thesis. University of Idaho, Moscow, USA.

Akay A, 1998. Estimating machine rates and production for selected forest harvesting machines operating in the western United States and determining the most economical machine combinations under representative conditions in Turkey. Master Thesis. Oregon State University, OR, USA.

Alam MM, Strandgard MN, Brown MW, Fox JC, 2012. Improving the productivity of mechanized harvesting systems using remote sensing. Aust Forestry 75 (4): 238-245. https://doi.org/10.1080/00049158.2012.10676408

Barari K, Sotoudeh Foumani B, Nobakht A, Moafi M, Ashrafi SB, 2011. Time study and efficiency (production and costs) of wheeled skidder HSM 904 in Caspian forests. World Appl Sci J 14 (5): 726-730.Çalışkan E, 2012. Productivity and cost analysis of manual felling and skidding in Oriental spruce (Picea orientalis L.) forests. Ann For Res 55 (2): 297-308.

Demir M, 2010. Investigation of timber harvesting mechanization progress in Turkey. Afr J Biotechnol 9 (11): 1628-1634. https://doi.org/10.5897/AJB10.1691

Eghtesadi A, 2008. Evaluation of wood productivity rate in primary and secondary transportation in Nekachub region. Iran J Forest Poplar Res 16 (2): 275- 291. [in Persian].

Erler J, 1984. Leistungsstreuung und Mittelwertsautomatik. Doctoral thesis, Göttingen University, Göttingen, Germany.

Erler J, 2012. Wissenschaftliches Arbeiten. Fiwa: Akademie, Reihe: Forstl. Technikmanagement, Band: Zumutbare Vorgabezeiten. Buchhandlung Findus, Tharandt, Germany. 50 pp.

Favreau J, Gingras F, 1998. An analysis of harvesting costs in eastern Canada. Special report NO. Forest Engineering Research Institute of Canada, SR-129.

Ghaffariyan MR, 2013. Comparing productivity-cost of roadside processing system and road side chipping system in Western Australia. J For Sci 59 (5): 204-210. https://doi.org/10.17221/81/2012-JFS

Ghaffariyan MR, Naghdi R, Ghajar I, Nikooy M, 2012. Time prediction models and cost evaluation of cut-to-length (CTL) harvesting method in a mountainous forest. Small-Scale For 12 (2): 181-192. https://doi.org/10.1007/s11842-012-9204-4

Gilanipoor N, Najafi A, Heshmatalvaezin SM, 2012. Productivity model and cost of steel tracked skidder LTT-100A in downward skidding (Case study: Research and educational forest of University of Tarbiat Modares). Iran J Forest 4 (3): 242-252. [in Persian].

Harstela P, 1991. Work studies in forestry. Silva Carelica 18: 1-41.

Hejazian M, Lotfalian L, Hosseini SAO, Fallah A, 2013. Analysis and evaluation of ground skidding costs of two stands with respect to production per hour and log quality. Bull Env Pharmacol Life Sci 2 (11): 24-29.

Jirousek R, Klvač R, Skoupý A, 2007. Productivity and costs of the mechanised cut-to-length wood harvesting system in clear-felling operations. J For Sci 53: 476-482. https://doi.org/10.17221/2088-JFS

Jourgholami M, Sobhani H, Etemad, 2008. Evaluation of the efficiency of timberjack 450 C wheeled skidder (case study: In Kheyroudkenar forest). Iran J Pajouhesh & Sazandegi 79: 28-36. [in Persian].

Jourgholami M, Majnounian B, 2011. Evaluating and comparison of two skidding methods using wheeled cable skidder (Case study: Kheyrud forest, Noshahr). Iran J Forest 3 (3): 189-200. [in Persian].

Jourgholami M, Majnounian B, 2013. Effects of rubber-tired cable skidder on soil compaction in Hyrcanian Forest. Croat J For Eng 34 (1): 123-135.

Lanford B, Stokes BJ, 1996. Comparison of two thinning systems, Part 2. Productivity and costs. Forest Prod J 46 (11/12): 47-53.

LeDoux CB, Huyler NH, 2001. Comparison of two cut-to-length harvesting systems operating in eastern hardwoods. Int J Forest Eng 12 (1): 53-59.

Lotfalian M, Moaf M, Sotoudeh B, Akbari RA, 2011.Time study and skidding capacity of the wheeled skidder Timberjack 450C. Int J Sci Techn Educ Res 2 (7): 120-124.

McDonagh K, 2002. Systems dynamics simulation to improve timber harvesting system management. Master thesis. State University Virginia, VI, USA.

McDonald TP, Fulton JP, 2005. Automated time study of skidders using global positioning system data. Comput Electron Agr 48: 19-37. https://doi.org/10.1016/j.compag.2005.01.004

Mousavi R, 2008. Comparison of productivity, cost and environmental impact of two harvesting methods in Northern Iran: short-log and long-log. Doctoral thesis. University of Joensuu, Joensuu, Finland.

Mousavi SR, Nikooy M, 2014. Evaluation of tree forwarding by farm tractor in patch cutting of poplar plantations in Northern Iran. Small-Scale For 13 (4): 527-540. https://doi.org/10.1007/s11842-014-9269-3

Mousavi R, Nikooy M, Nekzad E, Ershadfar M, 2012. Evaluation of full tree skidding by HSM-904 skidder in patch cutting of aspen plantation in Northern Iran. J For Sci 58 (2): 79-87. https://doi.org/10.17221/78/2011-JFS

Naghdi R, Bagheri I, 2007. Evaluation of tree length and assortment logging methods with respect to timber production in Caspian Forest in the Northern Iran. Asian J Plant Sci 6 (1): 46-50. https://doi.org/10.3923/ajps.2007.46.50

Naghdi R, Firouzan AH, Nikooy M, Barari K, 2010. Evaluation of production and cost of HSM-904 skidder and timber jack C-405 in forests of wood and paper industries of Mazandaran. Iran J Nat Resour 63 (1): 91-102. [in Persian].

Nurminen T, Korpunen H, Uusitalo J, 2006. Time consumption analysis of the mechanized cut-to-length harvesting system. Silva Fenn 40 (2): 335-363. https://doi.org/10.14214/sf.346

Nuutinen Y, Väätäinen K, Heinonen J, Asikainen A, Röser D, 2008. The accuracy of manually recorded time study data for harvester operation shown via simulator screen. Silva Fenn 42 (1): 63-72. https://doi.org/10.14214/sf.264

Parsakhoo A, Hosseini SA, Lotfalian M, Jalilvand H, 2009. Efficiency and cost analysis of forestry machinery usage in Hyrcanian Forests of Iran. World Appl Sci J 6 (2): 227-233.

Sachs L, 1984. Applied statistics a handbook of techniques, 2nd edition. Springer-Verlag, NY, 716 pp.

Villarreal-Calderon V, 2008, A look at the history and uses of logarithms. Montana Mathematics Enthusiast 5 (2-3): 337-344.




DOI: 10.5424/fs/2018272-13536

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