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Showing 1 to 20 of 34 for “"USLE"”.
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Evaluating Watershed and Stream-Channel Drivers of In-Stream Turbidity in Virginia and North Carolina
… such as the Universal Soil Loss Equation (USLE), the Geo-spatial interface for the Water Erosion Prediction Program (GeoWEPP) and many more, however, these models have not always been able to reliably predict in-stream sediment loads. In this study, two scales, watershed and site level, are …
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Modellierung von Vegetationsentwicklung und Erosion entlang eines Klimagradienten von mediterran bis semiarid
… Weiteren wurde ein Sedimentverlust mit Hilfe der USLE kalkuliert, um ein Vergleich zwischen verschiedenen Erosionsansätzen herzustellen. Die Vegetationsentwicklung und Erosion der mediterranen Gebiete konnte mit diesem Modell gut abgebildet werden. Für die Vegetation der verschiedenen Klimagebiete …
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Soil Erosion and Modeling Following Closure Best Management Practices for Bladed Skid Trails in the Ridge and Valley Region
… commonly used erosion models for forestland (USLE-Forest, RUSLE2, WEPP:Road). Direct erosion estimates were compared to erosion model predictions produced by USLE-Forest, RUSLE2, and WEPP:Road in order to partially confirm the relationship between sediment trap data and the models. Using …
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Análise espacial das perdas de solo no Estado da Paraíba
… loss equation was used to Universal Soil Loss - USLE coupled to an Information System GIS geographically. By multiplying factors K, R, LS, C and P, were necessary data such as time series of rainfall, soil map, digital elevation model and satellite image classification for the use and occupation, …
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Análise da evolução do uso e ocupação do solo e das perdas de solo na bacia experimental do riacho Guaraíra.
… software ArcGIS 9.3 and the empirical equations USLE and PNE. The results obtained from temporal analysis of the use and occupation of soils confirmed a predominance of monoculture sugarcane, which holds 34 % of the basin area, while the vegetation lost nearly 30 % of its natural composition. …
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Metodología de cálculo del factor topográfico, LS, integrado en los modelos Rusle y Usped. Aplicación al arroyo del lugar, Guadalajara (España).
El modelo paramétrico USLE y sus actuales revisiones, RUSLE, RUSLE3D y USPED, continúan siendo los modelos de mayor aplicación para determinar los efectos de la erosión hídrica en cuencas de montaña. En estos modelos, los efectos de la topografía sobre la pérdida de suelo están representados por el …
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Evaluar la erosión hídrica mediante el uso de diferentes modelos de prediccion en San José de los Remates
… estudio es determinar los factores de la RUSLE Y USLE durante la estación lluviosa del 2008, bajo diferentes sistemas de cubierta vegetal (Grama natural y Bosque nativo). Se estableció un experimento en bloques, con tres repeticiones y dos tratamientos. Cada parcela tiene una dimensión de …
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Análise do risco à erosão do solo no município de Lucena - Paraíba.
… loss of ground in the city of Lucena through the USLE (Universal Soil Loss Equation) identifying areas prone to erosion. By means of this model has been identified that erosion occurs with increased intensity in the region in which the predominant soil type Alfissol where the degree of erosion …
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Evaluación de erosión actual a escala de parcela y subcuenca para tres agroecosistemas con café, Río Jiguina - Jinotega
… y la Ecuación Universal de Pérdida de Suelo (USLE) utilizando el Sistema de Información Geográfica (SIG) para la aplicación de la Fórmula, y la elaboración de un escenario de erosión a nivel de microcuenca. Este estudio comprendió el periodo de Junio del 2005 a Junio del 2006 (época lluviosa). …
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Evaluation of Best Management Practices for Bladed Skid Trail Erosion Control and Determination of Erosion Model Accuracy and Applicability
… the Universal Soil Loss Equation for Forestry (USLE – Forest), the Revised Universal Soil Loss Equation version 2 (RUSLE2), and the Water Erosion Prediction Project for Forest Roads (WEPP – Forest Roads). Erosion model predictions were also regressed against field based results to determine …
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Soil Erosion from Forest Haul Roads at Stream Crossings as Influenced by Road Attributes
… and sediment delivery. Three erosion models, USLE-forest, RUSLE2, and WEPP were compared to trapped sediment data from the 37 forest haul road stream crossing approaches in the first study. The second study assessed model performance from five variations of the three erosion models that have …
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The development of an evaluation method for best management practices on agricultural lands
… Service's (SCS) Universal Soil Loss Equation (USLE) and uses data already being collected by the SCS and the Agricultural Stabilization and Conservation Service (ASCS). The method does require the creation of Hydrologic Response Units (HRUs) comprised of unique combinations or soil type and …
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Evaluación del proceso de erosión hídrica en laderas bajo diferente sistema de cobertura vegetal en el municipio de Santa Lucia, Boaco, 2008
… Universal de Pérdida de Suelo Revisada (RUSLE) y ecuación de perdida de suelo (USLE). Los resultados obtenidos determinan que la cubierta de pasto nativo (sin mantenimiento agronómico) fue el que presento las mayores pérdidas de suelo de 8.257tn/ha y de escurrimiento superficial de 46.71 …
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Análise dos índices de erosividade a partir de dados de precipitação de postos pluviométricos do Município de João Pessoa – PB.
… is part of the Equation Universal Soil Loss (USLE), revised and updated by Wischmeier and Smith (1978), who proposed equations to measure the intensity of rainfall in millimeters per hour and / or an intensity maximum thirty minutes. The difficulty in monitoring large scale data and absence of …
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Land use change and natural Araucaria forest degradation : northeastern misiones - Argentina
… (GIS) and the Universal Soil Loss Equation (USLE) model, were carried out. <br>Today, the A.angustifolia population is completely fragmented, mostly composed from isolated individuals or of very poor growth or ones overmature or ill, remaining less than 4% of its original existence. The …
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EFFECT OF MAJOR FACTORS ON BIOSWALE PERFORMANCE AND HYDROLOGIC PROCESSES FOR THE CONTROL OF STORMWATER RUNOFF FROM HIGHWAYS
… area using the Universal Soil Loss Equation (USLE) method. In addition to field study, extensive simulations were conducted considering various contributing areas, rainfall depth and intensity, and sediment accumulation. These variables were manipulated to evaluate their effect on runoff …
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Soil degradation: Its aspects and modelling
… clayey soils. The Universal Soil Loss Equation (USLE) was used; the result revealed that the study area is potentially susceptible to be eroded by water. The Erosion rate was measured in term of erosion Risk Assessment. The model indicated that the overall average of soil loss is 1.32 t/ha /y.
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Erosion and nutrient loading characteristics of two small agricultural watersheds in Piedmont Virginia
… ratio, gross erosion and delivery ratios. USLE C-factors for each field were evaluated for changes in crop and cover conditions. Enrichment ratios for available P, nitrate N, and TKN were estimated on an annual basis. Clay enrichment and particle size distributions of the surface soil and …
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Evaluación del proceso de erosión en laderas bajo diferente sistema de cobertura vegetal en el municipio de Boaco 2008
… de suelo y la ecuación universal revisada (USLE y RUSLE). Los resultados obtenidos determinan que la cubierta vegetal de pasto para el ciclo de primera fue la que presentó el menor promedio de pérdida de suelo y escurrimiento superficial con 5.93t/ha y 122.71 m³/ha seguido de frijol con 9.06 …
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The use of the LANDSAT MSS in the study of land use/cover and water quality relationships: a case study of the Lake Anna Watershed
… the product of the Universal Soil Loss Equation (USLE). Estimated turbidity levels correlated moderately well with surface data, but only a slight relationship could be established between land use/cover patterns and estimated turbidity. Possible explanations for these results were grouped into …
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