Search results for "USLE"
showing 10 items of 290 documents
Valutazione del fattore colturale per le coperture forestali
2008
Valutazione del fattore colturale per le coperture agrarie
2008
Il fattore climatico dell’equazione universale per il calcolo della perdita di suolo
2008
Atlante della qualità dei suoli del bacino del Fiume Imera Meridionale
2008
Stima dell'erosione idrica parcellare in due siti sperimentali italiani
2011
Verifica sperimentale del fattore L della USLE-MM nell’area di Sparacia
2012
Application of RUSLE model for the assessment of soil erosion in the western sector of Palermo Mountains (north-western Sicily)
2009
The aim of this work is to study the impact of vegetation cover on water erosion phenomena by exploiting an integrated approach to the assessment of soil loss rates. The investigated area is located in the western portion of the mountainous group named “Monti di Palermo” and occupies an area of approximately 475 km2; this area, which extends from sea level up to about 1,300 m, is mainly characterized by the presence of lithosols and luvisols laying above carbonate and terrigenous substrates. The assessment of erosion intensity was indirectly obtained by applying the RUSLE model, that allowed to estimate soil loss produced by rill-interrill erosion phenomena. Starting from topographical and …
Evaluating the effects of man-induced topographic changes in landscape structure on soil erosion by water: a case study in Sicily
2012
Checking generalization of the USLE-MM in central and South Italy
2018
The USLE-MM estimates event normalized plot soil loss, Ae,N, by an erosivity term given by the runoff coefficient, QR, times the single-storm erosion index, EI30, raised to an exponent b1 > 1. In this investigation, carried out at the three experi-mental sites of Bagnara, Masse and Sparacia, in Italy, the soundness of the USLE-MM scheme with a single exponent for the three sites was tested. The model was parameterized both locally and considering all sites simultaneously. The performances of the fitted models were established by considering all erosive events and also by distinguishing between events of different severity. The b1 exponent varied widely among the three sites (1.05 - 1.44) bu…
Deducing the USLE mathematical structure by dimensional analysis and self-similarity theory
2010
The Universal Soil Loss Equation (USLE) was originally deduced by a statistical analysis of a large data set of soil loss measurements. The multiplicative structure of the model has been criticised due to the considerable interdependence between the variables. Using the soil erosion representative variables and the reference condition adopted in the USLE, the aim of this paper was to apply dimensional analysis and self-similarity theory to deduce the functional relationship among the selected variables. The analysis yielded a multiplicative equation, similar to the USLE. Therefore, this study suggested that the USLE has a logical structure with respect to the variables used to simulate the …