Distribution and erosive potential of rainfall in the state of Tocantins, Brazil

Detalhes bibliográficos
Autor(a) principal: Viola, Marcelo Ribeiro
Data de Publicação: 2014
Outros Autores: Avanzi, Junior Cesar, Mello, Carlos Rogério de, Lima, Saulo de Oliveira, Alves, Marcos Vinicius Giongo
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/18334
Resumo: The objective of this work was to determine rainfall erosivity values and to generate its spatial‑temporal distribution maps in the state of Tocantins, Brazil. Pluviometric historical series from 97 rain gauges were analyzed, covering the period from 1985 to 2009. Erosivity was estimated by equations in which the independent variable was the average monthly rainfall or the Fournier rainfall index (Rc). Geostatistics was applied for mapping erosivity both monthly and annually. Annual erosivity values varied between 6,599 and 14,000 MJ mm ha-1 h-1, with peak in December when it reached values up to 2,800 MJ mm ha-1 h-1 per month. From May to September, erosivity values had lower than the critical one, considered 500 MJ mm ha-1 h-1 per month. Three priority regions were identified for soil and water conservation planning activities: mid‑west region of the state, in the neighborhood of Cantão State Park, with greatest erosivity; northern region of the state, especially during the first quarter of the year; and southern region of the state, in the fourth quarter.
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spelling Distribution and erosive potential of rainfall in the state of Tocantins, BrazilDistribuição e potencial erosivo das chuvas no Estado do Tocantinssoil and water conservation; rainfall erosivity index; soil water erosion; geostatistics; mappingconservação de solo e água; índice de erosividade da chuva; erosão hídrica; geoestatística; mapeamentoThe objective of this work was to determine rainfall erosivity values and to generate its spatial‑temporal distribution maps in the state of Tocantins, Brazil. Pluviometric historical series from 97 rain gauges were analyzed, covering the period from 1985 to 2009. Erosivity was estimated by equations in which the independent variable was the average monthly rainfall or the Fournier rainfall index (Rc). Geostatistics was applied for mapping erosivity both monthly and annually. Annual erosivity values varied between 6,599 and 14,000 MJ mm ha-1 h-1, with peak in December when it reached values up to 2,800 MJ mm ha-1 h-1 per month. From May to September, erosivity values had lower than the critical one, considered 500 MJ mm ha-1 h-1 per month. Three priority regions were identified for soil and water conservation planning activities: mid‑west region of the state, in the neighborhood of Cantão State Park, with greatest erosivity; northern region of the state, especially during the first quarter of the year; and southern region of the state, in the fourth quarter.O objetivo deste trabalho foi determinar os valores de erosividade e gerar os mapas da distribuição espaço‑temporal das chuvas no Estado do Tocantins. Analisaram-se séries históricas pluviométricas de 97 postos pluviométricos, compreendendo o período de 1985 a 2009. A erosividade foi estimada por meio de equações nas quais a variável independente foi a precipitação média mensal ou o coeficiente de chuva de Fournier (Rc). A geoestatística foi aplicada para o mapeamento da erosividade tanto na escala mensal quanto na anual. A erosividade anual apresentou valores entre 6.599 e 14.000 MJ mm ha-1 h-1, com auge em dezembro, quando atingiu valores de até 2.800 MJ mm ha-1 h-1 por mês. De maio a setembro, a erosividade apresentou valores inferiores ao crítico, tido como 500 MJ mm ha-1 h-1 por mês. Foram identificadas três regiões prioritárias para ações de planejamento visando a conservação do solo e da água: região centro‑oeste do Estado, nas imediações do Parque Estadual do Cantão, com maior erosividade anual; região norte do Estado, especialmente no primeiro trimestre; e região sudeste do Estado, no quarto trimestre.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraViola, Marcelo RibeiroAvanzi, Junior CesarMello, Carlos Rogério deLima, Saulo de OliveiraAlves, Marcos Vinicius Giongo2014-05-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/18334Pesquisa Agropecuaria Brasileira; v.49, n.2, fev. 2014; 125-135Pesquisa Agropecuária Brasileira; v.49, n.2, fev. 2014; 125-1351678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/18334/12587https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/18334/10873https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/18334/10874info:eu-repo/semantics/openAccess2014-05-09T18:35:52Zoai:ojs.seer.sct.embrapa.br:article/18334Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-05-09T18:35:52Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Distribution and erosive potential of rainfall in the state of Tocantins, Brazil
Distribuição e potencial erosivo das chuvas no Estado do Tocantins
title Distribution and erosive potential of rainfall in the state of Tocantins, Brazil
spellingShingle Distribution and erosive potential of rainfall in the state of Tocantins, Brazil
Viola, Marcelo Ribeiro
soil and water conservation; rainfall erosivity index; soil water erosion; geostatistics; mapping
conservação de solo e água; índice de erosividade da chuva; erosão hídrica; geoestatística; mapeamento
title_short Distribution and erosive potential of rainfall in the state of Tocantins, Brazil
title_full Distribution and erosive potential of rainfall in the state of Tocantins, Brazil
title_fullStr Distribution and erosive potential of rainfall in the state of Tocantins, Brazil
title_full_unstemmed Distribution and erosive potential of rainfall in the state of Tocantins, Brazil
title_sort Distribution and erosive potential of rainfall in the state of Tocantins, Brazil
author Viola, Marcelo Ribeiro
author_facet Viola, Marcelo Ribeiro
Avanzi, Junior Cesar
Mello, Carlos Rogério de
Lima, Saulo de Oliveira
Alves, Marcos Vinicius Giongo
author_role author
author2 Avanzi, Junior Cesar
Mello, Carlos Rogério de
Lima, Saulo de Oliveira
Alves, Marcos Vinicius Giongo
author2_role author
author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Viola, Marcelo Ribeiro
Avanzi, Junior Cesar
Mello, Carlos Rogério de
Lima, Saulo de Oliveira
Alves, Marcos Vinicius Giongo
dc.subject.por.fl_str_mv soil and water conservation; rainfall erosivity index; soil water erosion; geostatistics; mapping
conservação de solo e água; índice de erosividade da chuva; erosão hídrica; geoestatística; mapeamento
topic soil and water conservation; rainfall erosivity index; soil water erosion; geostatistics; mapping
conservação de solo e água; índice de erosividade da chuva; erosão hídrica; geoestatística; mapeamento
description The objective of this work was to determine rainfall erosivity values and to generate its spatial‑temporal distribution maps in the state of Tocantins, Brazil. Pluviometric historical series from 97 rain gauges were analyzed, covering the period from 1985 to 2009. Erosivity was estimated by equations in which the independent variable was the average monthly rainfall or the Fournier rainfall index (Rc). Geostatistics was applied for mapping erosivity both monthly and annually. Annual erosivity values varied between 6,599 and 14,000 MJ mm ha-1 h-1, with peak in December when it reached values up to 2,800 MJ mm ha-1 h-1 per month. From May to September, erosivity values had lower than the critical one, considered 500 MJ mm ha-1 h-1 per month. Three priority regions were identified for soil and water conservation planning activities: mid‑west region of the state, in the neighborhood of Cantão State Park, with greatest erosivity; northern region of the state, especially during the first quarter of the year; and southern region of the state, in the fourth quarter.
publishDate 2014
dc.date.none.fl_str_mv 2014-05-08
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/18334
url https://seer.sct.embrapa.br/index.php/pab/article/view/18334
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/18334/12587
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/18334/10873
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/18334/10874
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.49, n.2, fev. 2014; 125-135
Pesquisa Agropecuária Brasileira; v.49, n.2, fev. 2014; 125-135
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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