Ecological Effects of Forest Road on Some Growth and Edaphic Variables in Amygdalus scoparia Forest Reserve, Dehloran-ZarinAbaad

Construction of forest roads creates certain conditions in roadside that this situation has its positive and negative effects. This study was done to evaluate the ecological effects of forest road in Amygdalusscoparia forest reserve in Dehloran, Zarin Abaad. After selecting a suitable location for sampling, three transects in the direction perpendicular to the axis of the road in both sides was selected. Four plots (10×10 m) in each transect which located at distance of 1, 20, 80 and 200 meters from the road, were selected. The distance between transects was 90m. In other to achieve the aim of study, in each plot growth variables such as Collar diameter, Height and Crown of trees as well as Ec, pH, Pb, soil texture, organic carbon and nitrogen were recorded. The results show that the road construction on the tree crowns, only at 1 meter, on the collar diameter at 1 and 20 meter and on the height at 1 and 80 meter distance from the road there were a negative significant (p