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http://dx.doi.org/10.14578/jkfs.2017.106.3.300

Productivity, Cost, and Optimal Forest Road Network Density of Tree-length Yarding Operations with Tower Yarder  

Kim, Min-Kyu (Forest Practice Research Center, National Institute of Forest Science)
Baek, Seung-An (Forest Practice Research Center, National Institute of Forest Science)
Cho, Koo-Hyun (Forest Practice Research Center, National Institute of Forest Science)
Jung, Do-Hyun (Forest Practice Research Center, National Institute of Forest Science)
Publication Information
Journal of Korean Society of Forest Science / v.106, no.3, 2017 , pp. 300-309 More about this Journal
Abstract
The productivity, cost, and optimal forest road network density for tree-length yarding with K301-4 and HAM300 tower yarders were analyzed. The results showed that productivity decreased as the yarding distance increased. The productivity of the K301-4 was greater than that of the HAM300 as the maximum yarding distance was longer than 34 m. This difference increased as the load volume increased. As the K301-4 yarder had a higher purchase price and it took more time to set up compared to the HAM300, the HAM300 was cost effective. Therefore, in oder to introduce tower yarders to reduce operational cost, it is effective to increase the load volume during operations and to utilize the road network repeatedly for a long period.
Keywords
tower yarder; yarding operation; productivity; operational cost; optimal forest road density;
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Times Cited By KSCI : 15  (Citation Analysis)
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