Abstract

Two sets of flume experiments are discussed. The influence of bed load presented by different hardness and different density sediment artificial and natural particles on the erosivity of shallow flow was studied. The second set of experiments devoted to investigation of suspended sediment influence on soil erodibility. The experiments show that sediment particles moved as bed load significantly decreases shallow flow erosivity if its hardness is lower or the same as the eroded flow bed. Decrease of erosivity depends to no small degree on the density of sediment particles. The small amount suspended silt and clay particles decrease soil erodibility heavily due to consolidation surface soil layer.

Keywords: soil erosion, flow erosivity, sol erodibility