Soil compaction caused by 450C Timber Jack wheeled skidder (Shefarood forest, northern Iran)
2007
Naghdi, R.,The University of Guilan, Sowmehsara (Iran). Dept. of Forestry | Bagheri, I.,The University of Guilan, Sowmehsara (Iran). Dept. of Forestry | Akef, M.,The University of Guilan, Rasht (Iran). Dept. of Soil Science | Mahdavi, A.,University of Ilam (Iran). Dept. of Forestry
The changes in soil bulk density and relative soil compaction caused by a different number of wheeled skidder passes from stump to landing were investigated for two soil types (clay soil with high and low liquid limits). The results showed that skidder traffic significantly increased soil bulk density at sample locations. Soil bulk density increase in sample pits due to different numbers of machinery passes ranged from 15.8% to 62.6%. The findings of this research showed that the interaction effect between skidder traffic and soil type on soil bulk density changes was not significant. Also the highest significant increase in soil bulk density occurred at the first 11 passes in skidding trails and from this number of passes onwards there was no significant difference in the soil bulk density increase in sample locations.
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