Analyzing the Comparative Economic Efficiency of Short-wood Woodgrab Logging and Whole-tree Cable Logging Operations
2016
Seol, A., Seoul National University, Seoul, Republic of Korea | Han, H., Seoul National University, Seoul, Republic of Korea | Jung, Y., Seoul National University, Seoul, Republic of Korea | Chung, H ., Seoul National University, Seoul, Republic of Korea | Chung, J., Seoul National University, Seoul, Republic of Korea
This research was conducted in order to examine whether the Woodgrab short-wood logging method, most widely used logging method in Korea, is more favorable than other logging methods in terms of productivity and profitability. For the comparative purposes, whole-tree logging methods with cable yarding system using a swing yarder and a tower yarder were evaluated. The productivity and the profitability of the logging operations by the machine types on a L. kaempferi stand were estimated by simulating logging processes based on bucking patterns and the results were compared. As a result, the Woodgrab short-wood logging system showed the most favorable results in terms of skidding productivity and operating cost. On the contrary, the system was the least profitable among the three logging methods. Main reason is that while the system may be beneficial in terms of operation productivity, it is restricted to produce only short logs mainly for low quality raw materials such as pulp, bolts, etc. which are sold at cheap prices.
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