Nowadays, soil erosion is one of the most serious concerns in natural resources and agricultural fields. Understanding erosion and sedimentation processes throughout the landscape is essential for decision-making in critical areas. Researchers around the world have been trying to estimate erosion and sedimentation by various approaches as well as radionuclide techniques such as the cesium-137 technique. Due to inappropriate human activities in the Semirom County, the severity of soil erosion is beyond the tolerable limit of soil erosion, so obtaining quantitative reliable information on erosion is essential to perform soil and water conservation operations. The main objective of this study was to quantify soil redistribution among the hillslope in three land uses including rainfed agriculture, orchard of apple, and natural rangeland in the studied area in Semirom district. At each site, four slope positions included shoulder, back slope, toe slope and foot slope were selected. In position, three points were selected and soil samples were collected in two depth of 0-15 and 15-30 cm with an area of 20 ×20 cm. Gamma-ray spectrometry was used to analyze cesium-137. Magnetic parameters of soil samples were measured by a Bartington magnetometer at two frequencies of 0.46 and 4.6 kHz. The results showed that among soil physicochemical and magnetic properties, soil bulk density (r = 0.99 **) in orchard and rangelands; and available potassium (r = 0.96 **) at dryland showed the highest correlation with cesium-137. Multivariate regression analysis in orchard indicated that soil bulk density, calcium carbonate equivalent and available phosphorus explained 98% of Cs variability, in rangeland bulk density, nitrogen content and low magnetic susceptibility explained 97% of variability in Cs-137 and in dryland carbonates explained 96% of variability in Cs-137. Using cesium-137 technique, the maximum mean Cs-137 loss in the shoulder position of orchard, rangeland and dryland were 16.3%, 54.72% and 44.78%, respectively, and the maximum mean of Cs-137 was observed in footslope position of orchard. Using the relative weighted model and simplified mass balance, the mean of soil erosion for orchard in shoulder was 100.76 and 131.65 ton / ha. yr, respectively, and for rangeland was 34.88, 37.85 37.85 ton /ha.yr and for dryland was 130.52 and 185.3 ton/ha.yr, respectively. Also, the lowest magnetic susceptibility value was obtained in all three uses at shoulder position with the highest amount of soil loss. In contrast, the highest magnetic susceptibility was observed at the slope position with the high rate of soil deposition. The overall results confirmed that along the hillslope, very fine magnetic particles can be redistributed and magnetic susceptibility could be used for evaluating soil erosion and deposition. Keywords : Soil erosion, Soil redistribution, Cesium-137, Magnetic susceptibility, Land use