EVALUATION OF THE USLE MODEL TO ESTIMATE WATER EROSION IN AN ALFISOL

The USLE model was evaluated to estimate water erosion in an Alfisol located in San Pedro, Metropolitan Region of Chile. Values of erosivity (R) obtained by using the Arnoldus approximation (MFI) and equations proposed by the Institute for Nature Conservation (ICONA) in Spain were adapted to the con...

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Autores principales:	Olivares,B, Verbist,K, Lobo,D, Vargas,R, Silva,O
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2011
Materias:	Soil erosion erosivity USLE
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162011000200007
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spelling	oai:scielo:S0718-951620110002000072011-07-21EVALUATION OF THE USLE MODEL TO ESTIMATE WATER EROSION IN AN ALFISOLOlivares,BVerbist,KLobo,DVargas,RSilva,O Soil erosion erosivity USLE The USLE model was evaluated to estimate water erosion in an Alfisol located in San Pedro, Metropolitan Region of Chile. Values of erosivity (R) obtained by using the Arnoldus approximation (MFI) and equations proposed by the Institute for Nature Conservation (ICONA) in Spain were adapted to the conditions in Chile. For the evaluation of soil loss, data were used for each precipitation event causing erosion during the period 1996-2000, obtained by measurements on experimental plots with treatments of subsoiling, infiltration trenches and natural prairie. They were compared with estimated values of erosion in terms of basic statistics and indices based on variance and regression. In the descriptive and comparative analysis of the selected equations, it was determined that soil losses estimated with USLE using the equation of rainfall erosivity by ICONA provided soil loss values which were well-adjusted to the values recorded in Chile, compared to erosivity calculated by the Arnoldus approximation (MFI) that overestimated the soil loss values. According to the results or estimates in this study it was concluded that the USLE model was capable of detecting the trend of the data, and resulted in estimates consistent with the pattern observed in the field data.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.11 n.2 20112011-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162011000200007en10.4067/S0718-95162011000200007
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Soil erosion erosivity USLE
spellingShingle	Soil erosion erosivity USLE Olivares,B Verbist,K Lobo,D Vargas,R Silva,O EVALUATION OF THE USLE MODEL TO ESTIMATE WATER EROSION IN AN ALFISOL
description	The USLE model was evaluated to estimate water erosion in an Alfisol located in San Pedro, Metropolitan Region of Chile. Values of erosivity (R) obtained by using the Arnoldus approximation (MFI) and equations proposed by the Institute for Nature Conservation (ICONA) in Spain were adapted to the conditions in Chile. For the evaluation of soil loss, data were used for each precipitation event causing erosion during the period 1996-2000, obtained by measurements on experimental plots with treatments of subsoiling, infiltration trenches and natural prairie. They were compared with estimated values of erosion in terms of basic statistics and indices based on variance and regression. In the descriptive and comparative analysis of the selected equations, it was determined that soil losses estimated with USLE using the equation of rainfall erosivity by ICONA provided soil loss values which were well-adjusted to the values recorded in Chile, compared to erosivity calculated by the Arnoldus approximation (MFI) that overestimated the soil loss values. According to the results or estimates in this study it was concluded that the USLE model was capable of detecting the trend of the data, and resulted in estimates consistent with the pattern observed in the field data.
author	Olivares,B Verbist,K Lobo,D Vargas,R Silva,O
author_facet	Olivares,B Verbist,K Lobo,D Vargas,R Silva,O
author_sort	Olivares,B
title	EVALUATION OF THE USLE MODEL TO ESTIMATE WATER EROSION IN AN ALFISOL
title_short	EVALUATION OF THE USLE MODEL TO ESTIMATE WATER EROSION IN AN ALFISOL
title_full	EVALUATION OF THE USLE MODEL TO ESTIMATE WATER EROSION IN AN ALFISOL
title_fullStr	EVALUATION OF THE USLE MODEL TO ESTIMATE WATER EROSION IN AN ALFISOL
title_full_unstemmed	EVALUATION OF THE USLE MODEL TO ESTIMATE WATER EROSION IN AN ALFISOL
title_sort	evaluation of the usle model to estimate water erosion in an alfisol
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162011000200007
work_keys_str_mv	AT olivaresb evaluationoftheuslemodeltoestimatewatererosioninanalfisol AT verbistk evaluationoftheuslemodeltoestimatewatererosioninanalfisol AT lobod evaluationoftheuslemodeltoestimatewatererosioninanalfisol AT vargasr evaluationoftheuslemodeltoestimatewatererosioninanalfisol AT silvao evaluationoftheuslemodeltoestimatewatererosioninanalfisol
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EVALUATION OF THE USLE MODEL TO ESTIMATE WATER EROSION IN AN ALFISOL

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