Rutting and soil displacement caused by 450C Timber Jack wheeled skidder (Asalem forest northern Iran)

R. Naghdi, I. Bagheri, M. Lotfalian and B. Setodeh
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R. Naghdi: Department of Forestry, Faculty of Natural Resources, University of Guilan, Somehsara, Iran
I. Bagheri: Department of Agronomy and Plant Breeding, College of Agricultural Sciences, University of Guilan, Rasht, Iran
M. Lotfalian: Department of Forestry, Faculty of Natural Resources, University of Mazandaran, Sari, Iran
B. Setodeh: Department of Forestry, Faculty of Natural Resources, University of Guilan, Somehsara, Iran

Journal of Forest Science, 2009, vol. 55, issue 4, 177-183

Abstract: The use of skidding machinery in logging operations causes destructive effects especially on soil but has many advantages such as extracting long and heavy logs, optimum use of useful logging time and absence of defect in wood production quality and thus an increase in the added value of wood. In this research compartment 40 of the second district of Nav-Asalem in northern Iran at an altitude of 1,050-1,450 m above sea level was chosen in order to assess the amount of displaced soil volume and depth of ruts due to the traffic of Timber Jack 450C rubber wheeled skidder along the skid trail. Therefore, the correlations between two independent variables, longitudinal slope and soil texture, with two dependent variables, displaced soil volume and average depth of rut, along the skid trail were examined after 20 passes of skidder machinery. The results of this research showed a significant difference between the longitudinal slope increase of skid trail and the amount of soil volume displaced (P < 0.001). However, there was no significant correlation between the mean rut depth and different classification of longitudinal slope along the skid trail. The highest measured rut depth was 22 cm and occurred in the slope class of more than 25%. There was no significant correlation between the amount of displaced soil volume and rut depth with changes in soil texture along the skid trail.

Keywords: soil displacement; rutting; skid trail; Timber Jack 450C wheeled skidder; Iran (search for similar items in EconPapers)
Date: 2009
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DOI: 10.17221/102/2008-JFS

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