HYDROLOGICAL RESPONSES OF A WATERSHED TO VEGETATION CHANGES IN A TROPICAL SEMIARID REGION

Detalhes bibliográficos
Autor(a) principal: Andrade, Eunice Maia de
Data de Publicação: 2017
Outros Autores: Rodrigues, Rafael do Nascimento, Palácio, Helba Araújo de Queiroz, Brasil, José Bandeira, Ribeiro Filho, Jacques Carvalho
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Caatinga
Texto Completo: https://periodicos.ufersa.edu.br/caatinga/article/view/6397
Resumo: The objective of this work was to assess the effect of vegetation on the runoff coefficients of a Caatinga dry tropical forest before and after thinning. Thus, an experiment was conducted with evaluations in three hydrological years (2008, 2011 and 2013) in Iguatu, State of Ceará, Brazil. In 2008, the vegetation consisted of a 30-year regenerating Caatinga forest. The vegetation was subjected to thinning in 2009, 2011 and 2013, removing trees with less than 10-cm diameter at breast height. Hydrological responses were evaluated as a function of daily precipitation water depths, based on cumulative frequency distribution, by dividing precipitation events into three classes (CP) (CP≤30, 3050 mm). Significant differences between runoff coefficients before and after vegetation thinning were assessed through the Student's t-test (p
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spelling HYDROLOGICAL RESPONSES OF A WATERSHED TO VEGETATION CHANGES IN A TROPICAL SEMIARID REGIONRESPOSTAS HIDROLÓGICAS DE MICROBACIA EM REGIÃO SEMIÁRIDA TROPICAL À ALTERAÇÃO DA COBERTURA VEGETALRunoff. Thinning. Rainfall depths.Escoamento superficial. Raleamento. Alturas pluviométricas.The objective of this work was to assess the effect of vegetation on the runoff coefficients of a Caatinga dry tropical forest before and after thinning. Thus, an experiment was conducted with evaluations in three hydrological years (2008, 2011 and 2013) in Iguatu, State of Ceará, Brazil. In 2008, the vegetation consisted of a 30-year regenerating Caatinga forest. The vegetation was subjected to thinning in 2009, 2011 and 2013, removing trees with less than 10-cm diameter at breast height. Hydrological responses were evaluated as a function of daily precipitation water depths, based on cumulative frequency distribution, by dividing precipitation events into three classes (CP) (CP≤30, 3050 mm). Significant differences between runoff coefficients before and after vegetation thinning were assessed through the Student's t-test (pTendo como objetivo responder ao questionamento de como o raleamento da cobertura vegetal de uma floresta tropical seca, caatinga, pode interferir no coeficiente de escoamento superficial, desenvolveu-se este estudo em três anos hidrológicos (2008, 2011 e 2013). O experimento foi conduzido no município de Iguatu no estado do Ceará, Brasil. No ano de 2008 a cobertura vegetal era caatinga em regeneração há 30 anos. A vegetação foi submetida ao manejo de raleamento em 2009, 2011 e 2013, eliminando-se as árvores com diâmetro inferior a 10 cm a altura do peito. Para investigar a resposta hidrológica em função da altura pluviométrica diária, tendo-se por base a distribuição de frequência acumulada, os eventos foram divididos em três classes pluviométricas (CP): CP ≤ 30 mm, 30 < CP ≤ 50 mm e CP > 50 mm. Para identificar se os coeficientes de escoamento gerados antes e após o raleamento da vegetação apresentavam diferenças significativas, aplicou-se o teste “t” de Student ao nível de 1%. Antes do raleamento (2008), a CP ≤ 30 mm registrou o maior percentual do coeficiente de escoamento diferindo estatisticamente ao nível de 1% de significância dos outros anos. Para eventos de grande magnitude (CP > 50 mm), os resultados apontam que o escoamento apresenta uma maior dependência das características da chuva e das condições de umidade do solo. O maior desenvolvimento do estrato herbáceo devido ao raleamento resultou em uma redução do fluxo do escoamento superficial.Universidade Federal Rural do Semi-Árido2017-12-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufersa.edu.br/caatinga/article/view/6397REVISTA CAATINGA; Vol. 31 No. 1 (2018); 161-170Revista Caatinga; v. 31 n. 1 (2018); 161-1701983-21250100-316Xreponame:Revista Caatingainstname:Universidade Federal Rural do Semi-Árido (UFERSA)instacron:UFERSAenghttps://periodicos.ufersa.edu.br/caatinga/article/view/6397/pdfCopyright (c) 2017 Revista Caatingainfo:eu-repo/semantics/openAccessAndrade, Eunice Maia deRodrigues, Rafael do NascimentoPalácio, Helba Araújo de QueirozBrasil, José BandeiraRibeiro Filho, Jacques Carvalho2018-12-06T14:36:56Zoai:ojs.periodicos.ufersa.edu.br:article/6397Revistahttps://periodicos.ufersa.edu.br/index.php/caatinga/indexPUBhttps://periodicos.ufersa.edu.br/index.php/caatinga/oaipatricio@ufersa.edu.br|| caatinga@ufersa.edu.br1983-21250100-316Xopendoar:2018-12-06T14:36:56Revista Caatinga - Universidade Federal Rural do Semi-Árido (UFERSA)false
dc.title.none.fl_str_mv HYDROLOGICAL RESPONSES OF A WATERSHED TO VEGETATION CHANGES IN A TROPICAL SEMIARID REGION
RESPOSTAS HIDROLÓGICAS DE MICROBACIA EM REGIÃO SEMIÁRIDA TROPICAL À ALTERAÇÃO DA COBERTURA VEGETAL
title HYDROLOGICAL RESPONSES OF A WATERSHED TO VEGETATION CHANGES IN A TROPICAL SEMIARID REGION
spellingShingle HYDROLOGICAL RESPONSES OF A WATERSHED TO VEGETATION CHANGES IN A TROPICAL SEMIARID REGION
Andrade, Eunice Maia de
Runoff. Thinning. Rainfall depths.
Escoamento superficial. Raleamento. Alturas pluviométricas.
title_short HYDROLOGICAL RESPONSES OF A WATERSHED TO VEGETATION CHANGES IN A TROPICAL SEMIARID REGION
title_full HYDROLOGICAL RESPONSES OF A WATERSHED TO VEGETATION CHANGES IN A TROPICAL SEMIARID REGION
title_fullStr HYDROLOGICAL RESPONSES OF A WATERSHED TO VEGETATION CHANGES IN A TROPICAL SEMIARID REGION
title_full_unstemmed HYDROLOGICAL RESPONSES OF A WATERSHED TO VEGETATION CHANGES IN A TROPICAL SEMIARID REGION
title_sort HYDROLOGICAL RESPONSES OF A WATERSHED TO VEGETATION CHANGES IN A TROPICAL SEMIARID REGION
author Andrade, Eunice Maia de
author_facet Andrade, Eunice Maia de
Rodrigues, Rafael do Nascimento
Palácio, Helba Araújo de Queiroz
Brasil, José Bandeira
Ribeiro Filho, Jacques Carvalho
author_role author
author2 Rodrigues, Rafael do Nascimento
Palácio, Helba Araújo de Queiroz
Brasil, José Bandeira
Ribeiro Filho, Jacques Carvalho
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Andrade, Eunice Maia de
Rodrigues, Rafael do Nascimento
Palácio, Helba Araújo de Queiroz
Brasil, José Bandeira
Ribeiro Filho, Jacques Carvalho
dc.subject.por.fl_str_mv Runoff. Thinning. Rainfall depths.
Escoamento superficial. Raleamento. Alturas pluviométricas.
topic Runoff. Thinning. Rainfall depths.
Escoamento superficial. Raleamento. Alturas pluviométricas.
description The objective of this work was to assess the effect of vegetation on the runoff coefficients of a Caatinga dry tropical forest before and after thinning. Thus, an experiment was conducted with evaluations in three hydrological years (2008, 2011 and 2013) in Iguatu, State of Ceará, Brazil. In 2008, the vegetation consisted of a 30-year regenerating Caatinga forest. The vegetation was subjected to thinning in 2009, 2011 and 2013, removing trees with less than 10-cm diameter at breast height. Hydrological responses were evaluated as a function of daily precipitation water depths, based on cumulative frequency distribution, by dividing precipitation events into three classes (CP) (CP≤30, 3050 mm). Significant differences between runoff coefficients before and after vegetation thinning were assessed through the Student's t-test (p
publishDate 2017
dc.date.none.fl_str_mv 2017-12-11
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://periodicos.ufersa.edu.br/caatinga/article/view/6397
url https://periodicos.ufersa.edu.br/caatinga/article/view/6397
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://periodicos.ufersa.edu.br/caatinga/article/view/6397/pdf
dc.rights.driver.fl_str_mv Copyright (c) 2017 Revista Caatinga
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2017 Revista Caatinga
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal Rural do Semi-Árido
publisher.none.fl_str_mv Universidade Federal Rural do Semi-Árido
dc.source.none.fl_str_mv REVISTA CAATINGA; Vol. 31 No. 1 (2018); 161-170
Revista Caatinga; v. 31 n. 1 (2018); 161-170
1983-2125
0100-316X
reponame:Revista Caatinga
instname:Universidade Federal Rural do Semi-Árido (UFERSA)
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instname_str Universidade Federal Rural do Semi-Árido (UFERSA)
instacron_str UFERSA
institution UFERSA
reponame_str Revista Caatinga
collection Revista Caatinga
repository.name.fl_str_mv Revista Caatinga - Universidade Federal Rural do Semi-Árido (UFERSA)
repository.mail.fl_str_mv patricio@ufersa.edu.br|| caatinga@ufersa.edu.br
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