Soil Erosion Estimation Using the Epm Model

Efthimiou, Nikolaos; Lykoudi, E.

doi:10.12681/bgsg.11731

Cited by 14 publications

(16 citation statements)

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“…where Xa is the coefficient of soil protection and is non-dimensional parameter in relation with the vegetation cover and catchment's land use and it varies from 0.05 to 1. The values of this parameter are obtained by adaptation of the land use map of the Sarada river basin to the Erosion Potential Method guidelines and according to existing values in previous studies [38][39][40][41]. Thus, values of the coefficient Xa have been attributed to each unit of land use (Table 2).…”

Section: Erosion Process Intensity Prevailing Erosion Typementioning

confidence: 99%

“…It depends on the pedological and lithological characteristics of the watershed and indicates the resistance of soils to erosion. The values of this non-dimensional factor can be determined either by laboratory experimentation or by field measurements [36,41] and usually ranges from 0.25 to 2. In this study, we used the soil map data and the geological map of the study area to evaluate the Y factor.…”

Section: Coefficient Of Type and Extent Of Erosion φ Valuementioning

confidence: 99%

“…In this study, we used the soil map data and the geological map of the study area to evaluate the Y factor. Subsequently, coefficient values were assigned to each soil type based on the EPM guidelines and previous studies [39][40][41][42][43][44]. In the Table 2, we present the Y values attributed to each soil type in the Sarada river basin.…”

Section: Coefficient Of Type and Extent Of Erosion φ Valuementioning

confidence: 99%

“…It is a factor without dimensional unit with values ranging from 0.1 to 1 [19,37,45]. In our study area, this parameter is evaluated based on the erosion pattern map of the Sarada river basin, and each type of erosion form has taken on a value of φ according to the guidelines of the EPM method [39][40][41]. In calculating Z, Y, Xa, and ϕ, the weighted average value was used to calculate the mean value from the all the polygons with various values.…”

Section: Coefficient Of Type and Extent Of Erosion φ Valuementioning

confidence: 99%

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Estimation of Sediment Yield and Maximum Outflow Using the IntErO Model in the Sarada River Basin of Nepal

Chalise

Kumar

Spalević

et al. 2019

Water

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Soil erosion is a severe environmental problem worldwide as it washes away the fertile topsoil and reduces agricultural production. Nepal, being a hilly country, has significant erosion disputes as well. It is important to cognise the soil erosion processes occurring in a river basin to manage the erosion severity and plan for better soil conservation programs. This paper seeks to calculate the sediment yield and maximum outflow from the Sarada river basin located in the western hills of Nepal using the computer-graphic Intensity of Erosion and Outflow (IntErO) model. Asymmetry coefficient of 0.63 was calculated, which suggests a possibility of large floods to come in the river basin in the future whereas the maximum outflow from the river basin was 1918 m³ s−1. An erosion coefficient value of 0.40 was obtained, which indicates surface erosion of medium strength prevails in the river basin. Similarly, the gross soil loss rate of 10.74 Mg ha−1 year−1 was obtained with the IntErO modeling which compares well with the soil loss from the erosion plot measurements. The IntErO model was used for the very first time to calculate soil erosion rates in the Nepalese hills and has a very good opportunity to be applied in similar river basins.

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Section: Erosion Process Intensity Prevailing Erosion Typementioning

confidence: 99%

Section: Coefficient Of Type and Extent Of Erosion φ Valuementioning

confidence: 99%

Section: Coefficient Of Type and Extent Of Erosion φ Valuementioning

confidence: 99%

Section: Coefficient Of Type and Extent Of Erosion φ Valuementioning

confidence: 99%

See 2 more Smart Citations

Estimation of Sediment Yield and Maximum Outflow Using the IntErO Model in the Sarada River Basin of Nepal

Chalise

Kumar

Spalević

et al. 2019

Water

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“…In general, the formations met were limestones, hornstones, ophiolites, flysch, clay schists, conglomerates, sandstones, marls and quaternary alluvial deposits (terraces, talus cones and scree etc.) (Efthimiou and Lykoudi 2016).…”

Section: Study Area and Data Measurementsmentioning

confidence: 99%

Comparative analysis of sediment yield estimations using different empirical soil erosion models

Efthimiou

Lykoudi

Karavitis

2017

Hydrological Sciences Journal

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The study aims to evaluate the performance of different empirical soil erosion models (EPM, USLE, Koutsoyiannis and Tarla, RUSLE) in mountainous Mediterranean-type catchments. The study area comprises the Arachthos, Kalamas, Upper Acheloos and Venetikos river basins, located in northwestern Greece. The methodology followed includes both qualitative and quantitative analyses. The former refers to the specific attributes of the models and the latter to the estimated sediment yield results. The results were initially validated against observed sediment yield values. The ambiguous reliability of such measurements led to their replacement by simulated ones, estimated using the sediment rating curve methodology. In the latter analysis, the models performed better, with more accurate results. Overall, the RUSLE corresponded best to such basins. Finally, the performance of seven empirical equations (Syvitski, Avendano Salas et al., Dendy and Bolton, Lu et al., Webb and Griffiths, Zarris et al.) was assessed, yielding relatively poor results.

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The application of multi-attribute decision making methods in integrated watershed management

Ikram,

Meshram,

Hasan

et al. 2023

Stoch Environ Res Risk Assess

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Soil Erosion Estimation Using the Epm Model

Abstract: The study aims to evaluate soil erosion and investigate its spatial distribution by applying the empirical EPM (i.e. Erosion Potential Model)

Cited by 14 publications

References 0 publications

Estimation of Sediment Yield and Maximum Outflow Using the IntErO Model in the Sarada River Basin of Nepal

Estimation of Sediment Yield and Maximum Outflow Using the IntErO Model in the Sarada River Basin of Nepal

Comparative analysis of sediment yield estimations using different empirical soil erosion models

The application of multi-attribute decision making methods in integrated watershed management

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