2001•Bulletin of Soil and Water ConservationRequires access

Effect of Run on Water and Sediment on Rill Erosion Process at Down slope Section

Xiao Pei

Abstract

A dual box system (one is rill box and the other is feeder box) with 15 gradient and clay loess is used to quantify effects of runoff and sediment from up slope on down slope rill erosion and sediment under different sediment concentrations and rainfall intensities. The experiment results showed that the sediment from up slope was completely transported, runoff from up slope caused the additional sediment delivery at down slope rill erosion channel. Sediment regime in rill erosion process was always detachment-transport. The additional sediment delivery caused by up slope runoff increased with a decrease of sediment concentration in up slope runoff or an increase of rainfall intensity.

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Key concepts: Rill, Surface runoff, Sediment, Erosion, Loess, Geology, Hydrology (agriculture), Channel (broadcasting)