Harvesting Productivity and Cost of Whole-Tree Clear Cutting Using a Tower Yarder in a Larix leptolepis Stand

낙엽송 개벌 임분에서 타워야더를 이용한 전목수확시스템의 작업비용 분석

Cho, Min-Jae;Cho, Koo-Hyun;Oh, Jae-Heun;Han, Han-Sup;Cha, Du-Song

  • Received : 2014.02.04
  • Accepted : 2014.02.09
  • Published : 2014.02.28


The productivity and cost of clear cutting operations were examined to broaden our knowledge on the harvesting system in a Larix leptolepis stand of Korea. The harvesting system was divided into tree operations which were chainsaw (STIHL MS440) felling, tower yarder (Koller301-4) yarding and harvester (WOODY H50) processing. The average cycle time of felling, yarding and processing were 98 s/cycle, 245 s/cycle and 150 s/cycle. The total stump-to-pile operational productivity was 43.07 $m^3/hr$. The highest production activity was the felling 17.93 $m^3/hr$, followed by the productivity of processing 15.62 $m^3/hr$ and then by the productivity of yarding 9.52 $m^3/hr$. In addition the total stump-to-pile operational cost was 24,086 $won/m^3$. The highest cost activity was the yarding 14,557 $won/m^3$ (60.4% of the total cost), followed by the costs of processing 8,461 $won/m^3$ (35.2%) and then by the costs of felling 1,068 $won/m^3$.


Larix leptolepis;harvesting system;harvesting productivity;operational cost


  1. Han WS. 2008. Development of an estimation model for timber harvesting and transportation costs. PhD dissertation. Kookmin University, Seoul, Korea, pp 157. (in Korean with English abstract)
  2. Han WS, Cho KH, Oh JH, Song TY, Kim JW, Shin MY. 2009. Felling productivity in Korean pine stands by using chain saw. J Korean For Soc 98: 451-457. (in Korean with English abstract)
  3. Ji BY, Choi IH, Cha DS. 1997. A time study on felling and bucking of Larix leptolepis stands. In: Proceedings of the Annual Meeting of Korean Forest Society. Chuncheon, Korea, pp 95-96. (in Korean)
  4. Kim MK, Park SJ. 2012. An analysis of the operational time and productivity in whole-tree and cut-to-length logging operation system. J Korean For Soc 101: 344-355. (in Korean with English abstract)
  5. Korea Forest Service. 2010. Statistical yearbook of forestry. Accessed 20 Jan 2014.
  6. Korea Forest Service. 2013. Statistical yearbook of forestry. Accessed 20 Jan 2014.
  7. Lee JA. 2012. Productivity and Cost Analysis of Whole-tree Harvesting System using Swing-yarder. MS thesis. Kangwon National University, Chuncheon, Korea, pp 43. (in Korean with English abstract)
  8. Miyata ES. 1980. Determining fixed and operating costs of logging equipment. U.S. Department of Agriculture Forest Service Gen. Tech. Re. NC=55. pp 16.
  9. Oh JH, Lee JA, Kim JW. 2012. Productivity analysis of yarding operation with a swing-yarder. In: Proceedings of Annual Meeting of Korean Forest Society. Jeju, Korea, pp 992-994. (in Korean)
  10. Park SJ. 2004. An analysis of the yarding operation system with a mobile tower-yarder. J Korean For Soc 93: 205-214. (in Korean with English abstract)
  11. Park SJ, Lee GT. 2004. An analysis of forest biomass amount and harvesting system. J Korea Soc For Eng Tech 2: 13-29. (in Korean with English abstract)
  12. Song TY, Park MS, Kim JW, Kang GU. 1998. Studies on the comparison of the working cost with skidding method far track - type mini skidder. Korean J For Econom 6: 20-28. (in Korean with English abstract)
  13. Woo BM, Park JM, Lee JW, Chung NH. 1990. A study on economical analysis of yarding operation by cable crane. J Korean For Soc 79: 413-418. (in Korean with English abstract)