Magnetic susceptibility and Cs-137 inventory variability as influenced by land use change and slope positions in a hilly, semiarid region of west-central Iran

► χlf and Cs-137 inventory affected significantly by land use change and slope position. ► Soil redistribution along the hillslope was notably affected by pasture degradation. ► Variability in χlf in the hillslope was consistent with the variation of the Cs-137.