Search results for " USLE-MM"

showing 6 items of 6 documents

Predicting soil loss in central and south Italy with a single USLE-MM model

2018

Purpose: 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. This modeling scheme is based on an expected power relationship, with an exponent greater than one, between event sediment concentration, Ce, and the EI30/Pe(Pe= rainfall depth) term. In this investigation, carried out at the three experimental sites of Bagnara, Masse, and Sparacia, in Italy; the soundness of the USLE-MM scheme was tested. Materials and methods: A total of 1192 (Ae,N, QREI30) data pairs were used to parameterize the model both locally and considering all sites simultaneously. …

Bare plotsSoil erosion predictionResponsible editor: Philip N. OwenEvent plot soil loStratigraphy0208 environmental biotechnologyBare plotSampling (statistics)SedimentSoil science02 engineering and technology020801 environmental engineeringTerm (time)Soil lossEarth-Surface ProcesseBare plots Event plot soil loss Soil erosion prediction USLE-MMExponentErosionSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliUSLE-MMSurface runoffEvent plot soil lossEarth-Surface ProcessesMathematicsEvent (probability theory)
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Stima dell'erosione idrica parcellare in due siti sperimentali italiani

2011

Settore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-Forestalierosione perdita di suolo USLE-MM
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Verifica sperimentale del fattore L della USLE-MM nell’area di Sparacia

2012

Settore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-Forestalifattore L USLE-MM
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Sulla stima del fattore colturale della USLE-MM per coperture forestali ad eucalitto

2011

Il fattore colturale C della Universal Soil Loss Equation (USLE) esprime l’efficacia antierosiva della copertura vegetale nei riguardi del suolo. Per il caso di terreni coltivati esso varia con la rotazione colturale, con le pratiche agronomiche, con il livello di produttività del suolo, con la durata delle varie fasi vegetative e con la distribuzione temporale delle precipitazioni. Nell’ambito di suoli caratterizzati da copertura forestale il fattore C risulta legato, oltre che alle precipitazioni, anche alla percentuale di suolo effettivamente coperto, alla presenza o meno di pascolo, alle pratiche selvicolturali (tagli), al verificarsi di danni a seguito di incendi o fitopatologie, all’e…

erosione USLE-MM fattore colturale
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Applicazione della USLE-MM per la stima distribuita della produzione di sedimenti

2011

erosione USLE-MM fattore di erosivitàSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-Forestali
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Statistical check of USLE-M and USLE-MM to predict bare plot soil loss in two Italian environments

2018

The USLE-M and the USLE-MM estimate event plot soil loss. In both models, the erosivity term is given by the runoff coefficient, QR, times the single-storm erosion index, EI30. In the USLE-MM, QREI30is raised to an exponent b1> 1 whereas b1= 1 is assumed in the USLE-M. Simple linear regression analysis can be applied to parameterize both models, but logarithmically transformed data have to be used for USLE-MM. Parameterizing the USLE-MM with nonlinear regression of untransformed data could be a more appropriate procedure. A statistical check of the two suggested models (USLE-M and USLE-MM), considering two alternative parameterization procedures for the USLE-MM, was carried out for the Mass…

event temporal scale model parameterization plot soil loss USLE-M USLE-MM0208 environmental biotechnologyplot soil lossSoil ScienceSoil science02 engineering and technologyDevelopmentevent temporal scalePlot (graphics)Plot soil lo020801 environmental engineeringSoil lossSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-Forestalimodel parameterizationUSLE-MUSLE-MMEnvironmental ChemistryEnvironmental scienceGeneral Environmental ScienceLand Degradation & Development
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