Scale effect in USLE and WEPP application for soil erosion computation from three Sicilian basins

Amore, Elena; Modica, Carlo; Nearing, M. A.; Santoro, Vincenza Cinzia

doi:10.1016/j.jhydrol.2004.01.018

Cited by 165 publications

(84 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A critical point in upscaling the results from rainfall simulator area to catchment area scale was the well-known scale problem [36]. The plot size used in the rainfall simulations (0.28 m 2 ) is too small for rill initiation.…”

Section: Combination Of the Results And Discussionmentioning

confidence: 99%

Soil Erosion on Abandoned Land in Andalusia: A Comparison of Interrill- and Rill Erosion Rates

et al. 2012

View full text Add to dashboard Cite

The present paper is based on several field investigations (monitoring soil and rill erosion by aerial photography, rainfall simulations with portable rainfall simulators, and manmade rill flooding) in southern Spain. Experiments lead now to a closer understanding of the dynamics and power of different soil erosion processes in a gully catchment area. The test site Freila (Andalusia, Spain) covers an area of 10.01 ha with a rill density of 169 m ha −1 , corresponding to a total rill length of 1694 m. Assuming an average rill width of 0.15 m, the total rill surface can be calculated at 250 m 2 (0.025 ha). Given that, the surface covered by rills makes up only 0.25% of the total test site. Since the rill network drains 1.98 ha, 20% of the total runoff comes from rills. The rills' sediment erosion was measured and the total soil loss was then calculated for detachment rates between 1685 g m −2 and 3018 g m −2 . The interrill areas (99.75% of the test site) show values between 29 and 143 g m −2 . This suggests an important role of rill erosion concerning runoff and soil detachment.

show abstract

Section: Combination Of the Results And Discussionmentioning

confidence: 99%

Soil Erosion on Abandoned Land in Andalusia: A Comparison of Interrill- and Rill Erosion Rates

et al. 2012

View full text Add to dashboard Cite

show abstract

“…saturated conductivity Ks and storage suction factor Sf, Manning's roughness coefficients n, geomorphology and granulometry. This set corresponds to the devices and the model structures (Amore et al 2004;Morgan & Nearing 2011). The characteristics of soil hydrology are different.…”

Section: Discussionmentioning

confidence: 99%

Impact of overland flow on soil characteristics in Třebsín experimental plots

Bačinová¹,

Kovář²

2017

Soil & Water Res.

View full text Add to dashboard Cite

Bačinová H., Kovář P. (2017): Impact of overland flow on soil characteristics in Třebsín experimental plots. Soil & Water Res., This paper describes the continuation of simulated outcomes from the plots No. 4 and No. 5 with two different soils, using the KINFIL model to assess the runoff from extreme rainfall. The KINFIL model is a physicallybased, parameter-distributed 3D model that has been applied to the Třebsín experimental station in the Czech Republic. This model was used for the first time in 2012 to simulate the impact of overland flow caused by natural or sprinkler-made intensive rains on four of the nine experimental plots. This measurement of a rain simulator producing a high-intensity rainfall involves also hydraulic conductivity, soil sorptivity, plot geometry and granulometric curves to be used for the present analysis. However, since 2012, the KINFIL model has been amended to provide a more effective comparison of the measured and computed results using the values of new parameters such as storage suction factor and field capacity on plot 4 and plot 5. The KINFIL model uses all input data mentioned above, and it produces the output data such as gross rainfall, effective rainfall, runoff discharge hydraulic depths, hydraulic velocities and shear velocities as well as shear stress values depending on the soil particle distribution. These processes are innovative, physically based, and both the measured and the computed results fit reliably.

show abstract

“…Sediment yields (SY, analogous to WEPP erodibilities), as they depend on soil type, functional class and slope (similar in concept to the SDR factor of Amore et al 2004) developed from the hundreds of RS plots across the basin, are summarized in Table 4 (TMDL 2008). These regression equations relate sediment load per unit of runoff to soil type, functional condition and slope and particle-size distributions in runoff at an approximately 1-m 2 scale (RS plot).…”

Section: Methodology and Scaling Approachmentioning

confidence: 99%

“…SDR is considered a function of slope (Kling, in Hadley et al 1985, Kothyari et al 1994, or, using morphologic criteria, a travel-time probability-density function evaluated as a function of slope and slope length (Ferro and Minacapilli 1995). Assuming uniform flow, constant intensity rainfall and the SDR concept where travel times were taken as proportional to the ratio between the path length to the closest stream and a representative velocity (Santoro et al 2002), Amore et al (2004) found no real scale dependence of RUSLE and WEPP in predicting runoff and erosion from Sicilian sub-basins between 0.5 and 20 km 2 despite comparisons between results from sub-basins having very different areal distributions of soil, land uses, and slopes. As found in earlier studies (Nearing 1998, 2000, Nearing et al 1999, relative prediction error increased as erosion rates (sediment loads/discharges) decreased due in part to the naturally greater variation of small erosion rates.…”

Section: Forest Erosion Processes and Modelling Summarymentioning

confidence: 99%

Erosion modelling for land management in the Tahoe basin, USA: scaling from plots to forest catchments

Grismer

2012

Hydrological Sciences Journal

View full text Add to dashboard Cite

Editor D. KoutsoyiannisCitation Grismer, M.E., 2012. Erosion modelling for land management in the Tahoe basin, USA: scaling from plots to forest catchments. Hydrological Sciences Journal, 57 (5), 878-900.Abstract Land management and its effects on water quality are a concern where regulatory agencies work to establish sediment and/or nutrient loadings. Runoff and erosion measurement in the field and modelling at the catchment scale are often the only means of generating realistic data and results for subsequent analyses. As such, it is critical to link local-scale field measurements associated with the range of land uses or soil restoration efforts with the catchment-scale sediment loading. A distributed hydrological model with locally-derived, slopedependent sediment yield (erodibility) equations developed from rainfall simulation (RS) studies at the 1-m 2 scale across the Tahoe basin, USA, is employed to determine the runoff-dependent scaling factors (SFs) necessary to predict daily stream sediment loading from the forested uplands. Data from three "paired", adjacent, west-shore Lake Tahoe tributary catchments are considered for the period 1994-2004 at time scales ranging from daily to annual. At all time scales, the SF was dependent on runoff (R), particularly at smaller values, but was readily simplified as an approximately inverse square-root function. Optimized SF-runoff regressions for each watershed were equivalent when modified by ratios of watershed area. As a result, a single daily SF-runoff equation was determined (through minimization of sediment load prediction errors) that could be successfully applied to all three watersheds with an accuracy consistent with the predictive error associated with any one of the watersheds alone. Sensitivity analyses indicated that sediment loading predictions were more sensitive to the SF-runoff equation coefficient rather than the exponent. Annual sediment load prediction errors of ∼30% might be expected for low or high runoff years.Key words erosion; forest soils; modelling; runoff; scaling; watersheds; sediment yield Modélisation de l'érosion pour la gestion des terres dans le bassin du lac Tahoe, Etats-Unis: scalance depuis les parcelles jusqu'aux bassins versants forestiers Résumé La gestion des terres et ses effets sur la qualité de l'eau sont des préoccupation à propos desquelles les organismes de réglementation travaillent à établir les charges sédimentaires et / ou les charges d'éléments nutritifs. Les mesures du ruissellement et de l'érosion in situ et la modélisation à l'échelle du bassin versant sont assez souvent les seuls moyens d'obtenir des données réalistes et des résultats pour des analyses ultérieures. Il est donc essentiel de relier les mesures de terrain à l'échelle locale, associées à toute une gamme d'utilisations des terres ou d'efforts de restauration des sols, avec la charge en sédiments à l'échelle du bassin versant. Un modèle hydrologique distribué, fondé sur des équations d'érodabilité locale fonction de la pente, établies à partir de si...

show abstract

Scale effect in USLE and WEPP application for soil erosion computation from three Sicilian basins

Cited by 165 publications

References 25 publications

Soil Erosion on Abandoned Land in Andalusia: A Comparison of Interrill- and Rill Erosion Rates

Soil Erosion on Abandoned Land in Andalusia: A Comparison of Interrill- and Rill Erosion Rates

Impact of overland flow on soil characteristics in Třebsín experimental plots

Erosion modelling for land management in the Tahoe basin, USA: scaling from plots to forest catchments

Contact Info

Product

Resources

About