J. For. Sci., 2013, 59(9):339-344 | DOI: 10.17221/34/2013-JFS

Considering the relationship of slope and soil loss on skid trails in the north of Iran (a case study)Original Paper

M. Akbarimehr, H. Jalilvand
Department of Forestry, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University, Sari, Mazandaran, Iran

With increasing mechanization of forest harvesting operations the impacts on soil have increased quite dramatically. The objective of this paper was to examine the relationship of slope and soil loss. This research was carried out in parcels 14 and 26 of the third district of Nav-Asalem forest in the north of Iran. Erosion plots were 75, 150 and 225 m2 with two slope classes. After each rainfall event the amount of runoff was measured; then, a sample was taken to determine the weight of soil loss. The results of correlation analysis by Pearson's test between soil loss and slope classes, soil loss and slope length showed that there was a significant (P < 0.05) and positive correlation between the mentioned factors. Also, linear regression between soil loss, slope length and slope gradient was significant. It could be concluded that studying and underlying factors that increase soil loss such as soil type, rainfall intensity, should also be taken into consideration in future. Skid trail construction and skidding should be limited to the slope of < 20%; machine traffic should be restricted. The above-mentioned conclusions can be applied to proper harvesting and management of forest ecosystems.

Keywords: harvesting; runoff

Published: September 30, 2013  Show citation

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Akbarimehr M, Jalilvand H. Considering the relationship of slope and soil loss on skid trails in the north of Iran (a case study). J. For. Sci. 2013;59(9):339-344. doi: 10.17221/34/2013-JFS.
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