Soil is one of the important natural resources of each country and soil erosion as a danger to human welfare and even the whole life. Erosion and sedimentation are the two natural processes causing surface deformation and transformations which could be aggravated by human activities. Soil and environmental factors can significantly effects on runoff, sediment production and erodibility. The purpose of this study was to evaluate the environmental factors (e. i. slope, land use) and some physical and chemical properties (e. i. hydraulic conductivity, aggregate stability, organic matter, and calcium carbonate) on runoff, sediment and muddiness at a part of Lordegan region in Chaharmahal va Bakhtiari Province. A 3/17 mm per min for 90 pick of emulator rain shower was used in the virgin forest, disturbed forest and dry farming fields. Two slope at 1% of probability) was the most positive effects on the erodibility index. Keywords: Land use, Slop, Hydraulic conductivity, Stability aggregates, Organic Matter, Runoff and Sediment, Erodibility
