Rill and Interrill Soil Loss Estimations Using the USLE-MB Equation at the Sparacia Experimental Site (South Italy)

A reliable prediction of event soil loss at the plot scale can be obtained by Universal Soil Loss Equation (USLE)-type models. For Sparacia site (South Italy), USLE-MB model was recently developed, in which effect erosive agent is modeled using rainfall erosivity index USLE a power b1 > 1 runoff coefficient QR. In this investigation, parameterized separately data collected for rill and interrill events that occurred experimental area. The values = 1.406 1.012 were databases, respectively, revealed different on due to two processes. Different relationships expressive topographic factors also deduced. estimation performance significantly improved when operating distinction between databases compared with complete database. particularly estimating highest values, associated occurrence rills. Finally, proposed parameterization procedure lends itself being tested framework empirical modeling.