You are here

Home » Content

Productivity Models for Cable Yarding in Alpine Forests

Journal Name:

  • European Journal of Forest Engineering

Publication Year:

  • 2015

Key Words:

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
The authors tested the same modern mid-size tower yarder for uphill and downhill extraction. The yarding machine is a popular commercial model offering state-of-the-art yarding technology, including telescoping tower and full hydrostatic transmission. The machine was studied while harvesting selective patch cuts (gap cutting) in similar even-aged Norway Spruce stands, extracting logs between 3 and 6 metres long. The operation was carried out by the same experienced 3-man crew. Productivity ranged between 8.5 and 10 m3/h, including all delays, but excluding set-up and dismantle time. A set of regression equations for estimating machine productivity were calculated as a function of the main work conditions, such as yarding distance, lateral extraction distance, mean log size and number of logs per turn. Machine utilization was about 60%, which is consistent with previous studies. In general, cable logging is more complex and expensive than ground-based logging, which places steep terrain forestry at a general disadvantage in terms of pure harvesting cost. However, modern cable yarding technology can reduce this gap, and productivity models can assist users in refining their work technique, so as to maximize the productive potential of their machines.
Bookmark/Search this post with
FULL TEXT (PDF): 
PDF icon arastirmax-productivity-models-cable-yarding-alpine-forests.pdf
  • 1
9
14
  • English

REFERENCES

References: 

Acar, H.H., Eroglu, H., Ozkaya, S., 2010. An
investigation of roundwood extraction and
determination of the physical damage on residual
trees and seedlings due to logging operation using
Urus MIII forest skyline on snow. Proceeding of the
FORMEC Coneference “Forest Engineering:
meeting the Needs of the Society and the
Environment”, July 11 – 14, 2010, Padova, Italy. p.
9.
Bergstrand, K, 1991. Planning and analysis of forestry
operation studies. Skogsarbeten Bulletin n. 17, 63
pp.
Binder, C., Hofer, C., Wiek, A., Scholz, R., 2004.
Transition towards improved regional wood flows
by integrating material flux analysis and agent
analysis: the case of Appenzell Ausserrhoden,
Switzerland. Ecological Economics 49: 1-17.
Bont, L., Heinimann, H., 2012. Optimum geometric
layout of a single cable road. European Journal of
Forest Research 131: 1439-1448.
13
Spinelli et al.
14
Dorren, L., Berger, F., Imeson, A., Maier, B., Rey, F.,
2004. Integrity, stability and management of
protection forests in the European Alps. Forest
Ecology and Management 195: 165-176.
Gullberg, T., 1995. Evaluating operator-machine
interactions in comparative time studies.
International Journal of Forest Engineering 7 (1):
51-61.
Huyler, N., LeDoux, C., 1997. Cycle-time equation for
the Koller K300 cable yarder operating on steep
slopes in the Northeast. Res. Pap. NE-705, USDA
Forest Service, Northeastern Forest Experiment
Station 4 p.
Kofman, P., 1995. Siwork 3: User Guide. Danish Forest
and Landscape Research Institute, Vejle, Denmark.
37 pp.
Magagnotti, N., Kanzian, C., Schulmeyer, F., Spinelli,
R., 2013. A new guide for work studies in forestry.
International Journal of Forest Engineering 24 (3):
249-53.
Mason, B., Kerr, G., Simpson, J., 1999. What is
continuous cover forestry? Forestry Commission
Information Note 29. Forestry Commission,
Edinburgh, Scotland.
Onida, M., 2009. The Alps: eight countries, a single
territory. Permanent Secretariate of the Alpine
Convention, Innsbruck (Austria). 89 p.
SAS Institute Inc., 1999. StatView Reference. SAS
Publishing, Cary, NC. p.84-93. ISBN1-58025-162-5.
Scott, A., 1973. Work measurement: observed time to
standard time. In: Wittering, W. 1973. Work study
in forestry. Forestry Commission Bulletin 47: 26-39.
Seidl, R., Rammer, W., Lexer M., 2011. Climate
change vulnerability of sustainable forest
management in the Eastern Alps. Climatic
Change 106: 225-254.
Senturk, N., Ozturk, T., Demir, M., 2007. Productivity
and costs in the course of timber transportation with
the Koller K300 cable system in Turkey. Building and
Environment 42: 2107-2113.
Spinelli, R., Magagnotti, N., Picchi, G., 2011. Annual
use, economic life and residual value of cut-to-length
harvesting machines. Journal of Forest Economics 17:
378-387.
Spinelli, R., Magagnotti, N., Nati, C., 2010a.
Benchmarking the impact of traditional small-scale
logging systems used in Mediterranean forestry.
Forest Ecology and Management 260: 1997-2001.
Spinelli R., Magagnotti, N., Lombardini, C., 2010b.
Performance, capability and cost of small-scale cable
yarding technology. Small-scale Forestry 9: 123-135.
Spinelli, R., Magagnotti, N., Facchinetti, D., 2013. A
survey of logging enterprises in the Italian Alps: firm
size and type, annual production, total workforce and
machine fleet. International Journal of Forest
Engineering 24: 109-120.
Stampfer, K., Visser, R., Kanzian, C., 2006. Cable
corridor installation times for European yarders.
International Journal of Forest Engineering 17: 71-
77.
Zambelli, P., Lora, C., Spinelli, R., Tattoni, C., Vitti,
A., Zatelli, P., Ciolli, M., 2012. A GIS decision
support system for regional forest management to
assess biomass availability for renewable energy
production. Environmental Modelling and Software
38: 203-213.
Zimbalatti, G., Proto, A., 2009. Cable logging
opportunities for firewood in Calabrian forests.
Biosystems Engineering 102: 63-68.

Thank you for copying data from http://www.arastirmax.com