• Title, Summary, Keyword: Swing-yarder

Search Result 3, Processing Time 0.021 seconds

Analysis of Policy and Status of the Logging Operation System for Forest Biomass (산림바이오매스 이용을 위한 임목수확작업시스템의 현황 및 정책 분석)

  • Park, Sang-Jun
    • Journal of Environmental Science International
    • /
    • v.29 no.2
    • /
    • pp.155-166
    • /
    • 2020
  • This study was conducted to analyze the current situation of the logging operation system and to suggest an effective policy plan to secure important raw materials for the use of forest biomass. The dissemination of forestry mechanization and the establishment of the logging operation are important tasks to establish a system and reduce costs of timber production by increasing the use of forest biomass; this includes increasing the supply of timber for domestic products and increasing the production of wood chips and wood pellets. In particular, the efficiency of steep-slopes catenary system machinery for yarding such as tower-yarder and swing-yarder should be urgently supplied to cope with forest production and supply of forest biomass energy resources. In addition, it is necessary to continuously promote the dissemination of high-performance forestry machinery as is being done in Japan. At the same time, instead of distributing or retaining the spread of forestry machinery to the state and local governments, it is necessary to distribute timber production work centered on forest cooperatives or private timber producers to be carried out by wood producers, forest cooperatives and individuals.

Analyzing the Comparative Economic Efficiency of Short-wood Woodgrab Logging and Whole-tree Cable Logging Operations (Woodgrab을 이용한 단목집재와 가선집재방식에 의한 전목집재의 경제적 효율성 비교분석)

  • Seol, Ara;Han, Hee;Jung, Yoonkoo;Chung, Hyejean;Chung, Joosang
    • Journal of Korean Society of Forest Science
    • /
    • v.105 no.2
    • /
    • pp.231-237
    • /
    • 2016
  • 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.