1989 Fiscal Year Final Research Report Summary
A study on the systematization of the helicopter type logging in forest management by the non-clear cutting method
| Project/Area Number |
62560148
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
林学
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| Research Institution | Mie University |
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Principal Investigator |
TOBIOKA Jiro Mie University, Fac. of Bioresources, Professor, 生物資源学部(農学部), 教授 (90024588)
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| Project Period (FY) |
1987 – 1989
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| Keywords | Logging system / Helicopter yarding / Productivity / Cost / Conditional factor / Interrelationship / Predictable model / Systematization |
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| Research Abstract |
The interrelationship between the productivity of helicopter yarding operation and various operational conditions was investigated, using the quantification method, on Japanese National Forests in the three-year-period following 1983. It was confirmed that the kinds of helicopters had the greatest effect on the productivity of helicopter yarding operations, and the tree species, average volume per log, payload, and so forth followed. The productivity under different operational conditions could be predicted by the results of this quantification method analysis.
Also the interrelationship between the cost of helicopter yarding operation and various operational conditions was investigated, using the quantification method, on Japanese National Forests in 1986. It was confirmed that the average yarding distance had the greatest effect on the cost of helicopter yarding operations, and the tree species, average height above sea level in the yarding area, and average volume per log followed, but on the other hand, the kinds of helicopters and average payload per cycle had little effect on the cost. The cost under different operational conditions could be predicted by the results of this analysis.
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