عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Forest roads play a vital role in the management, conservation and restoration of forests are in mountainous regions. Despite the cost of forest roads, they are essential infrastructure to provide access for resource management.The recognition ofthese properties has a critical role in choosing the ground as one of the materials. Due to expenses of soil analysis, reducing soil samples to its minimum and maintaining its validity are of great importance in soil mechanics in forest roads. In this research, based on geomorphological properties such as slope, aspect, altitude, etc, zonation of study area was done and divided into homogenous units based on landform using GIS. After preparing landform map, one soil sample and totally 32 samples were taken in units from which road passes.Then soil properties like normal moisture (%), bulk density and soil texture were analyzed.With regard to result of pretests 10 zones with similar properties were divided. According to soilzonation map, 10 samples were taken using GPS and experiments were carried out in geotechnic lab.Classification of the soils carried out using the above experiments according to USCS method. Resultsshow only two samples of all samples (30%) are coarse soil and the others (30%) are finesoil. 40% of fine soil have clay fine soil.