Soil Detachment Capacity of Rill Flow on Loess Hillslope

Detachment capacity by flow is one of the most important contents of soil erosion research. Clarifying the variation regularity of rill flow detachment capacity can make us understand rill erosion process deeply,and make a good foundation for building rill erosion process model. Rill flow detachment capacity on loess hillslope was studied by the rill flume experiment in this paper. Based on analyzing the variation characteristics of soil detachment capacity by rill flow on loess hillslope,the factor model of soil detachment capacity by rill flow was established. Under different flow discharges,soil detachment capacity by rill flow increased with slope and they could be well described by linear functions. Under different slopes,soil detachment capacity by rill flow increased with flow discharge and they could be well described by power functions. The factor model of relationship between soil detachment capacity by rill flow and the flow discharges and slopes is a binary power function. Flow discharge has greater influence on soil detachment capacity by rill flow than slope.