مقایسه مشخصه های فنی و هندسی شبکه جاده های طرح جنگل داری چند‌ منظوره آرمرده بانه با دستورالعمل‌های موجود

Forest roads are necessary to access the forest area in order to performance forest management plans and to be availability of forest regions. Purpose of this research was technical characteristic analysis of existing road networks in compare to given standards of rural road, forest road and in multiple use forest management plan of Armardah, Banah. First, the existing road network was extracted from a 1:50000 map in GIS environment. Then reality assessment of this roads was controlled trough the fielding works and by using of GPS. Trough a random sampling method, technical characteristics of 150 points of existing roads i.e. roadbed width, road way width, cut shoulder width, fill shoulder width, cut slope, fill slop and  road lengths grade were recorded. One-sample T- Test method was applied to compare technical characteristics of existing roads with their given standard. Results showed that width roadbed of grade 1 road and grade 2 road, road bed cut shoulder width and fill shoulder width of grade 2 road and road lengths slope of grade 3 were different with standards significantly. In addition, grade 1 roads and grade 2 road in according to lengths slope were significantly different with standards. The cut slope and fill slope of all roads were not significantly different. Results of this study showed that the roadbed width in study area was more than standards. This leads to increase in road sanctum and road border was caused land destruction. In addition, to be unsuitable road shoulder in grade2 road and length slop of grade3 roads were caused destruction in roadway and was made traffic problem.Existing roads are unsuitable for be availability for purposes of Zagros particularmultiple used forest management plan. It could be proper for better efficiency of this network, redesigning of these roads was done in according to given standards.