2000 Volume 44 Pages 699-704
The sediment transport from steep agricultural land through the watershed causes not only the deformation of river morphology but also the change of terrestrial and aquatic ecosystems. Hence, the sediment discharge equation due to rainfall runoff should be established so as to predict and to prevent the outflow of agricultural soils to the watershed. In this study the sediment discharge equation applied to the bare land was proposed based upon the experiments with the rainfall simulator and the previouslyobtained data. The sediment discharge equation inclusive of the protection effect of vegetation cover which was examined theoretically was applied to the actual field, and explained the order of sediment outflow from agricultural land by using the runoff process model simultaneously.
