Rainfall erosivity indices in the Goiânia region, Goiás State, Brazil

Detalhes bibliográficos
Autor(a) principal: Silva, Marx Leandro Naves
Data de Publicação: 1997
Outros Autores: Freitas, Pedro Luiz de, Blancaneaux, Philippe, Curi, Nilton
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/4743
Resumo: The measure of rainfall erosive potential is becoming object of many studies, since this parameter is indispensable in the studies of models for the prediction of soil losses through hydrical erosion. This study was carried out at EMGOPA/Embrapa-CNPS experimental station, to determine the rainfall erosivity for the Goiânia region, GO, Brazil, through rainfall graphical data. The rainfall annual average erosivity for the region was 8353.0 MJ mm ha-1 h-1 year-1 and 129.8 MJ ha-1 year-1, respectively for EI30 and KE>25. The correlation coefficients showed that the rainfall and rainfall coefficient allow to estimate the rainfall erosivity in the absence of more complete rainfall data. The erosion critical period, due to the occurrence of erosive rainfalls is from September to February, when 85.70% and 84.05% of the KE>25 and EI30 annual total, respectively, occurr. In this period, conservation practices are necessary in order to reduce the hydrical erosion, for the maintenance of soil sustainability.
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spelling Rainfall erosivity indices in the Goiânia region, Goiás State, BrazilÍndices de erosividade das chuvas da região de Goiânia, GOsoil sustainability; cerrado vegetation; rainfall erosive potential; kinetics energy; rainfall coefficient; erosionsustentabilidade do solo; cerrado; potencial erosivo da chuva; energia cinética; coeficiente de chuva; erosãoThe measure of rainfall erosive potential is becoming object of many studies, since this parameter is indispensable in the studies of models for the prediction of soil losses through hydrical erosion. This study was carried out at EMGOPA/Embrapa-CNPS experimental station, to determine the rainfall erosivity for the Goiânia region, GO, Brazil, through rainfall graphical data. The rainfall annual average erosivity for the region was 8353.0 MJ mm ha-1 h-1 year-1 and 129.8 MJ ha-1 year-1, respectively for EI30 and KE>25. The correlation coefficients showed that the rainfall and rainfall coefficient allow to estimate the rainfall erosivity in the absence of more complete rainfall data. The erosion critical period, due to the occurrence of erosive rainfalls is from September to February, when 85.70% and 84.05% of the KE>25 and EI30 annual total, respectively, occurr. In this period, conservation practices are necessary in order to reduce the hydrical erosion, for the maintenance of soil sustainability.A medida do potencial erosivo da chuva vem se tornando objeto de muitos estudos, uma vez que este parâmetro é indispensável nos estudos de modelos para predição de perdas de solo por erosão hídrica. Objetivou-se, com este trabalho, determinar a erosividade da chuva na região de Goiânia (GO) mediante dados pluviográficos. O estudo foi realizado na estação experimental da EMGOPA/Embrapa-CNPS. A erosividade média anual das chuvas na região foi de 8.353,0 MJ mm ha-1 h-1 ano-1 e 129,8 MJ ha-1 ano-1 para os índices EI30 e KE>25, respectivamente. Os coeficientes de correlação mostraram que os parâmetros precipitação e coeficiente de chuva permitem estimar a erosividade da chuva na ausência de dados pluviográficos mais completos. O período crítico de erosão por ocorrência de chuvas erosivas é de setembro a fevereiro; neste período, ocorrem 85,70% e 84,05% do total anual de KE>25 e EI30, respectivamente. Durante este período, práticas conservacionistas são necessárias para reduzir a erosão hídrica, com vistas a manter a sustentabilidade dos solos.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraSilva, Marx Leandro NavesFreitas, Pedro Luiz deBlancaneaux, PhilippeCuri, Nilton1997-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/4743Pesquisa Agropecuaria Brasileira; v.32, n.10, out. 1997; 977-985Pesquisa Agropecuária Brasileira; v.32, n.10, out. 1997; 977-9851678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/4743/7278info:eu-repo/semantics/openAccess2015-03-24T17:45:50Zoai:ojs.seer.sct.embrapa.br:article/4743Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2015-03-24T17:45:50Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Rainfall erosivity indices in the Goiânia region, Goiás State, Brazil
Índices de erosividade das chuvas da região de Goiânia, GO
title Rainfall erosivity indices in the Goiânia region, Goiás State, Brazil
spellingShingle Rainfall erosivity indices in the Goiânia region, Goiás State, Brazil
Silva, Marx Leandro Naves
soil sustainability; cerrado vegetation; rainfall erosive potential; kinetics energy; rainfall coefficient; erosion
sustentabilidade do solo; cerrado; potencial erosivo da chuva; energia cinética; coeficiente de chuva; erosão
title_short Rainfall erosivity indices in the Goiânia region, Goiás State, Brazil
title_full Rainfall erosivity indices in the Goiânia region, Goiás State, Brazil
title_fullStr Rainfall erosivity indices in the Goiânia region, Goiás State, Brazil
title_full_unstemmed Rainfall erosivity indices in the Goiânia region, Goiás State, Brazil
title_sort Rainfall erosivity indices in the Goiânia region, Goiás State, Brazil
author Silva, Marx Leandro Naves
author_facet Silva, Marx Leandro Naves
Freitas, Pedro Luiz de
Blancaneaux, Philippe
Curi, Nilton
author_role author
author2 Freitas, Pedro Luiz de
Blancaneaux, Philippe
Curi, Nilton
author2_role author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Silva, Marx Leandro Naves
Freitas, Pedro Luiz de
Blancaneaux, Philippe
Curi, Nilton
dc.subject.por.fl_str_mv soil sustainability; cerrado vegetation; rainfall erosive potential; kinetics energy; rainfall coefficient; erosion
sustentabilidade do solo; cerrado; potencial erosivo da chuva; energia cinética; coeficiente de chuva; erosão
topic soil sustainability; cerrado vegetation; rainfall erosive potential; kinetics energy; rainfall coefficient; erosion
sustentabilidade do solo; cerrado; potencial erosivo da chuva; energia cinética; coeficiente de chuva; erosão
description The measure of rainfall erosive potential is becoming object of many studies, since this parameter is indispensable in the studies of models for the prediction of soil losses through hydrical erosion. This study was carried out at EMGOPA/Embrapa-CNPS experimental station, to determine the rainfall erosivity for the Goiânia region, GO, Brazil, through rainfall graphical data. The rainfall annual average erosivity for the region was 8353.0 MJ mm ha-1 h-1 year-1 and 129.8 MJ ha-1 year-1, respectively for EI30 and KE>25. The correlation coefficients showed that the rainfall and rainfall coefficient allow to estimate the rainfall erosivity in the absence of more complete rainfall data. The erosion critical period, due to the occurrence of erosive rainfalls is from September to February, when 85.70% and 84.05% of the KE>25 and EI30 annual total, respectively, occurr. In this period, conservation practices are necessary in order to reduce the hydrical erosion, for the maintenance of soil sustainability.
publishDate 1997
dc.date.none.fl_str_mv 1997-10-01
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/4743
url https://seer.sct.embrapa.br/index.php/pab/article/view/4743
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/4743/7278
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.32, n.10, out. 1997; 977-985
Pesquisa Agropecuária Brasileira; v.32, n.10, out. 1997; 977-985
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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