Naghdi, R., Nikooy, M., Bagheri, I., Javadpour, J. (2008). Efficiency comparison of Timber Jack 450C skidder in planned and unplanned logging system (Case study: second district of Nave-Asalem). , 16(4), 659-649.
Ramin Naghdi; Mehrdad Nikooy; Ieraj Bagheri; Jabbar Javadpour. "Efficiency comparison of Timber Jack 450C skidder in planned and unplanned logging system (Case study: second district of Nave-Asalem)". , 16, 4, 2008, 659-649.
Naghdi, R., Nikooy, M., Bagheri, I., Javadpour, J. (2008). 'Efficiency comparison of Timber Jack 450C skidder in planned and unplanned logging system (Case study: second district of Nave-Asalem)', , 16(4), pp. 659-649.
Naghdi, R., Nikooy, M., Bagheri, I., Javadpour, J. Efficiency comparison of Timber Jack 450C skidder in planned and unplanned logging system (Case study: second district of Nave-Asalem). , 2008; 16(4): 659-649.

Efficiency comparison of Timber Jack 450C skidder in planned and unplanned logging system (Case study: second district of Nave-Asalem)

تحقیقات جنگل و صنوبر ایران
Article 13, Volume 16, Issue 4, January 2009, Pages 659-649    PDF (168.08 K)
Document Type: Research article
Authors
Ramin Naghdi* 1; Mehrdad Nikooy1; Ieraj Bagheri2; Jabbar Javadpour3
1Assistant Prof., Department of forestry, University of Guilan
2Senior expert, Department of Agronomy and Plant Breeding, University of Guilan
3M.Sc. student, Department of forestry, University of Guilan
Abstract
    In this study, wood extract production and costs were assessed in the planned and unplanned (conventional) logging system. The research was carried out in compartments No. 23 and 25 of second district of Nave-Asalem forest. Work study technique based on IUFRO guideline was used to calculate system hourly production. Based on guideline of Forest, Range and Watershed Organization (FRWO) of Iran, system hourly cost was calculated. Results showed that planning skid trails and landings before tree felling as well as using directional felling technique increased hourly skidder production from 12.72m3 to 18.8m3. Increase of production, reduced the extraction cost from 103015 to 69372 Rials per cubic meter. These extraction costs include landing construction costs in planned harvesting and road maintenance costs in unplanned logging system.
 
 
Keywords
skid trails; planned logging; conventional logging; landing; directional felling
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