Tohoku Journal of Forest Science
Online ISSN : 2424-1385
Print ISSN : 1342-1336
ISSN-L : 1342-1336
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Volume 4, Issue 2
Displaying 1-10 of 10 articles from this issue
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Original Article
  • Applying a mobile delimber to clear cutting and its fuel consumption
    Hideo SAKAI
    Article type: Original Article
    1999 Volume 4 Issue 2 Pages 1-6
    Published: October 25, 1999
    Released on J-STAGE: March 19, 2018
    DOIhttps://doi.org/10.18982/tjfs.4.2_1
    JOURNAL FREE ACCESS
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    A mobile delimber, which delimbs a whole-tree log during yarding carried out by the pulling force of the tower yarder's winches, was applied to clear cutting. The full tree system using the delimber and the tree length system using felling and delimbing by chainsaw were compared by analyzing the time spent per tree. In the case where the maximum yarding distance was less than 100〜140 m, the payload of the tower yarder exceeded 3 logs and the operational efficiency of the chainsaw was higher because of the small log size, the tree length system may be more suitable. However, in clear cutting where logs were bigger and the maximum yarding distance exceeded 100 m, higher efficiency of the full tree system by the delimber was recognized. Fuel consumption for delimbing by the delimber was only 0.13 ℓ/m3. This value was 1/12 - 1/14 for that of a processor and 1/6 for that of a chainsaw.
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[Feature] Wildlife conservation and forest management in Tohoku district
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