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http://dx.doi.org/10.14578/jkfs.2022.111.4.583

Comparison of the Timber Harvesting Productivity and Cost of Single-operation using a Forestry Combi-machine Versus Multi-operation using a Tower-yarder and Processor  

Min-Jae, Cho (Forest Technology and Management Research Center, National Institute of Forest Science)
Yun-Sung, Choi (Forest Technology and Management Research Center, National Institute of Forest Science)
Ho-Seong, Mun (Forest Technology and Management Research Center, National Institute of Forest Science)
Jae-Heun, Oh (Forest Technology and Management Research Center, National Institute of Forest Science)
Publication Information
Journal of Korean Society of Forest Science / v.111, no.4, 2022 , pp. 583-593 More about this Journal
Abstract
The harvesting system in South Korea faces the problems of aging workers and high wages, so it is necessary to improve the operation system and train workers to use high-performance forestry machines. This study compared the effectiveness and costs of yarding and processing operations between a multi-operation system using a tower yarder (HAM300) and a processor (KESLA 20SH) with those of a single-system using a forestry combi-machine. A whole-tree (cable) yarding operation was conducted in the clear-cutting area located at Compartment 15, Gwangneung Experimental Forest, National Institute of Forest Science, and the productivity and cost of multi- and single-system were analyzed. The productivity of the single-system was 1.5 m3/PMH and 1.6 m3/PMH higher than that of the multi- system because the single-system produced 1 log/cycle more than the multi-system in the yarding operation. The cost was approximately 12.1% lower for the single-system (￦36,113/m3) than for the multi-system (￦41,065/m3). The costs of the single-system and multi-system were decreased by maximums of 22.6% and 15.9%, respectively, by decreasing the idle time.
Keywords
whole-tree; clear-cut; combi-machine; idle time;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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