Estimation of the natural erosion potential of soil in the Longá river watershed, Piauí­, Brazil.

Detalhes bibliográficos
Autor(a) principal: Morais, Reurysson Chagas de Sousa
Data de Publicação: 2020
Outros Autores: Silva, Antonio James Oliveira
Tipo de documento: Artigo
Idioma: por
Título da fonte: Revista Geotemas
Texto Completo: https://periodicos.apps.uern.br/index.php/GEOTemas/article/view/2413
Resumo: The objective of this research was to estimate the Natural Erosion Potential of the soils of the Longá river watershed, located in the north of the state of Piauí­. Three physical parameters of the Universal Soil Loss Equation were considered: rainfall erosivity, soil erodibility and topographic factor. The erosivity was calculated from the historical series of precipitation data estimated by satellite. A calculation of erodibility was made from the application of empirical equations using data of soil samples made available by the Brazilian Institute of Geography and Statistics. The topographic factor was obtained through the software LS-TOOLS, using a digital elevation model. It was concluded that the basin has low natural erosion potential, with 72% of its area with erosion estimation lower than 200 tons ac-¹ year-¹. The regions with high erosive potential (NEP > 800 tons ac-¹ year-¹) are situated in the northeast and southeast sections of the basin and are related to a slope terrain. The results identify the topographic factor as the parameter of greatest influence in the occurrence of erosive processes in the basin.
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spelling Estimation of the natural erosion potential of soil in the Longá river watershed, Piauí­, Brazil. Estimación del potencial natural de la erosión del suelo en la cuenca del rí­o Longá, Piauí­, Brasil.ESTIMATIVA DO POTENCIAL NATURAL DE EROSÃO DOS SOLOS NA BACIA HIDROGRÁFICA DO RIO LONGÁ, PIAUÍ, BRASIL ErodibilidadeErosividadeFator topográficoRio LongáErodibilityErosivityTopographic fatorLongá RiverErosibilidadErosividadFactor topográficoRio LongáThe objective of this research was to estimate the Natural Erosion Potential of the soils of the Longá river watershed, located in the north of the state of Piauí­. Three physical parameters of the Universal Soil Loss Equation were considered: rainfall erosivity, soil erodibility and topographic factor. The erosivity was calculated from the historical series of precipitation data estimated by satellite. A calculation of erodibility was made from the application of empirical equations using data of soil samples made available by the Brazilian Institute of Geography and Statistics. The topographic factor was obtained through the software LS-TOOLS, using a digital elevation model. It was concluded that the basin has low natural erosion potential, with 72% of its area with erosion estimation lower than 200 tons ac-¹ year-¹. The regions with high erosive potential (NEP > 800 tons ac-¹ year-¹) are situated in the northeast and southeast sections of the basin and are related to a slope terrain. The results identify the topographic factor as the parameter of greatest influence in the occurrence of erosive processes in the basin.El objetivo de esta investigación fue estimar el potencial de erosión natural de los suelos de la cuenca del rí­o Longá, ubicada en el norte del estado de Piauí­. Se consideraron los tres parámetros fí­sicos de la ecuación universal de pérdida de suelo: erosión por lluvia, erosión del suelo y factor topográfico. La erosividad se calculó a partir de la serie histórica de datos de precipitación estimados por satélite. El cálculo de la erosibilidad se realizó utilizando ecuaciones empí­ricas utilizando datos de muestras de suelo proporcionadas por el Instituto Brasileño de Geografí­a y Estadí­stica. El factor topográfico se obtuvo usando el programa LS-TOOLS, usando un modelo digital de elevación. Se concluye que la cuenca tiene un potencial de erosión natural bajo, con un 72% de su área con una erosión estimada por debajo de 200 t ha-¹ año-¹. Las regiones con alto potencial erosivo (PNE> 800 t ha-¹ año-¹) se encuentran en los sectores noreste y sureste de la cuenca y están asociadas con un relieve inclinado. Los resultados identifican el factor topográfico como el parámetro con mayor influencia en la ocurrencia de procesos de erosión en la cuenca. O objetivo desta pesquisa foi estimar o Potencial Natural de Erosão dos solos da bacia hidrográfica do rio Longá, localizada no norte do estado do Piauí­. Considerouse os três parâmetros fí­sicos da Equação Universal de Perdas de Solo: erosividade da chuva, erodibilidade dos solos e fator topográfico. A erosividade foi calculada a partir da série histórica de dados de precipitação estimada por satélite. Realizou-se o cálculo da erodibilidade com aplicação de equações empí­ricas utilizando dados de amostras de solos disponibilizadas pelo Instituto Brasileiro de Geografia e Estatí­stica. O fator topográfico foi obtido por meio da programa LS-TOOLS, utilizando um modelo digital de elevação. Conclui-se que a bacia apresenta baixo potencial natural de erosão, com 72% de sua área com estimativa de erosão inferior a 200 t ha-¹ ano-¹. As regiões com alto potencial erosivo (PNE > 800 t ha-¹ ano-¹) encontram-se nos setores nordeste e sudeste da bacia e estão associadas a relevo declivoso. Os resultados identificaram o fator topográfico como o parâmetro de maior influência na ocorrência de processos erosivos na bacia. Universidade do Estado do Rio Grande do Norte (UERN)2020-08-31info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion Peer reviewed Revisado por paresAvaliado pelos paresapplication/pdfhttps://periodicos.apps.uern.br/index.php/GEOTemas/article/view/2413Journal Geotemas; Vol. 10 No. 2 (2020): Revista Geotemas; 116-137Revista Geotemas; Vol. 10 Núm. 2 (2020): Revista Geotemas; 116-137Revista Geotemas; v. 10 n. 2 (2020): Revista Geotemas; 116-1372236-255Xreponame:Revista Geotemasinstname:Universidade do Estado do Rio Grande do Norte (UERN)instacron:UERNporhttps://periodicos.apps.uern.br/index.php/GEOTemas/article/view/2413/2216Copyright (c) 2020 Revista Geotemasinfo:eu-repo/semantics/openAccessMorais, Reurysson Chagas de Sousa Silva, Antonio James Oliveira 2020-09-16T16:31:51Zoai:ojs2.periodicos.apps.uern.br:article/2413Revistahttp://periodicos.apps.uern.br/index.php/GEOTemas/indexPUBhttp://periodicos.apps.uern.br/index.php/GEOTemas/oaigeotemas@uern.br||josielguedes@yahoo.com.br2236-255X2236-255Xopendoar:2020-09-16T16:31:51Revista Geotemas - Universidade do Estado do Rio Grande do Norte (UERN)false
dc.title.none.fl_str_mv Estimation of the natural erosion potential of soil in the Longá river watershed, Piauí­, Brazil.
Estimación del potencial natural de la erosión del suelo en la cuenca del rí­o Longá, Piauí­, Brasil.
ESTIMATIVA DO POTENCIAL NATURAL DE EROSÃO DOS SOLOS NA BACIA HIDROGRÁFICA DO RIO LONGÁ, PIAUÍ, BRASIL
title Estimation of the natural erosion potential of soil in the Longá river watershed, Piauí­, Brazil.
spellingShingle Estimation of the natural erosion potential of soil in the Longá river watershed, Piauí­, Brazil.
Morais, Reurysson Chagas de Sousa
Erodibilidade
Erosividade
Fator topográfico
Rio Longá
Erodibility
Erosivity
Topographic fator
Longá River
Erosibilidad
Erosividad
Factor topográfico
Rio Longá
title_short Estimation of the natural erosion potential of soil in the Longá river watershed, Piauí­, Brazil.
title_full Estimation of the natural erosion potential of soil in the Longá river watershed, Piauí­, Brazil.
title_fullStr Estimation of the natural erosion potential of soil in the Longá river watershed, Piauí­, Brazil.
title_full_unstemmed Estimation of the natural erosion potential of soil in the Longá river watershed, Piauí­, Brazil.
title_sort Estimation of the natural erosion potential of soil in the Longá river watershed, Piauí­, Brazil.
author Morais, Reurysson Chagas de Sousa
author_facet Morais, Reurysson Chagas de Sousa
Silva, Antonio James Oliveira
author_role author
author2 Silva, Antonio James Oliveira
author2_role author
dc.contributor.author.fl_str_mv Morais, Reurysson Chagas de Sousa
Silva, Antonio James Oliveira
dc.subject.por.fl_str_mv Erodibilidade
Erosividade
Fator topográfico
Rio Longá
Erodibility
Erosivity
Topographic fator
Longá River
Erosibilidad
Erosividad
Factor topográfico
Rio Longá
topic Erodibilidade
Erosividade
Fator topográfico
Rio Longá
Erodibility
Erosivity
Topographic fator
Longá River
Erosibilidad
Erosividad
Factor topográfico
Rio Longá
description The objective of this research was to estimate the Natural Erosion Potential of the soils of the Longá river watershed, located in the north of the state of Piauí­. Three physical parameters of the Universal Soil Loss Equation were considered: rainfall erosivity, soil erodibility and topographic factor. The erosivity was calculated from the historical series of precipitation data estimated by satellite. A calculation of erodibility was made from the application of empirical equations using data of soil samples made available by the Brazilian Institute of Geography and Statistics. The topographic factor was obtained through the software LS-TOOLS, using a digital elevation model. It was concluded that the basin has low natural erosion potential, with 72% of its area with erosion estimation lower than 200 tons ac-¹ year-¹. The regions with high erosive potential (NEP > 800 tons ac-¹ year-¹) are situated in the northeast and southeast sections of the basin and are related to a slope terrain. The results identify the topographic factor as the parameter of greatest influence in the occurrence of erosive processes in the basin.
publishDate 2020
dc.date.none.fl_str_mv 2020-08-31
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer reviewed
Revisado por pares
Avaliado pelos pares
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://periodicos.apps.uern.br/index.php/GEOTemas/article/view/2413
url https://periodicos.apps.uern.br/index.php/GEOTemas/article/view/2413
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://periodicos.apps.uern.br/index.php/GEOTemas/article/view/2413/2216
dc.rights.driver.fl_str_mv Copyright (c) 2020 Revista Geotemas
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2020 Revista Geotemas
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade do Estado do Rio Grande do Norte (UERN)
publisher.none.fl_str_mv Universidade do Estado do Rio Grande do Norte (UERN)
dc.source.none.fl_str_mv Journal Geotemas; Vol. 10 No. 2 (2020): Revista Geotemas; 116-137
Revista Geotemas; Vol. 10 Núm. 2 (2020): Revista Geotemas; 116-137
Revista Geotemas; v. 10 n. 2 (2020): Revista Geotemas; 116-137
2236-255X
reponame:Revista Geotemas
instname:Universidade do Estado do Rio Grande do Norte (UERN)
instacron:UERN
instname_str Universidade do Estado do Rio Grande do Norte (UERN)
instacron_str UERN
institution UERN
reponame_str Revista Geotemas
collection Revista Geotemas
repository.name.fl_str_mv Revista Geotemas - Universidade do Estado do Rio Grande do Norte (UERN)
repository.mail.fl_str_mv geotemas@uern.br||josielguedes@yahoo.com.br
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