Trend in hydrological series and land use changes in a tropical basin at Northeast Brazil
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Ciências Ambientais (Online) |
Texto Completo: | https://www.rbciamb.com.br/Publicacoes_RBCIAMB/article/view/1097 |
Resumo: | Flow is one of the hydrological variables of greatest interest due to its connection with water availability and its multiple uses. However, in recent years this resource has been threatened by intense land use and climate change, affecting patterns previously considered to be stationary. The goal of this study was to evaluate trends in changes of patterns of flow, precipitation, and land use in a basin located in the Brazilian Cerrado. 33 years of rainfall, fluviometric, and land use data were used, covering the period of 1985 to 2018 on an annual scale. Mann-Kendall and Sen Slope’s nonparametric test was applied to evaluate the trends in temporal series, as well as the Spearman Rho and Pettit, which were used to analyze the correlations between variables and detect the point of change in the series, respectively. The results show statistically significant trends in flow reduction over time. At the same time, a considerable reduction in natural areas occurred, with an increase of +750% in agricultural areas. The results also show that although a tendency to reduce precipitation was detected, its magnitude was not significant, with land use changes being the main factor for the negative changes in the flow of the Rio Grande tributary. |
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Trend in hydrological series and land use changes in a tropical basin at Northeast BrazilTendência em séries hidrológicas e de mudanças no uso e cobertura da terra em uma bacia tropical do Nordeste do Brasilestacionariedade; vazão; testes não paramétricos; rio Rio Grande.stacionariety; flow; nonparametric tests; Rio Grande river.Flow is one of the hydrological variables of greatest interest due to its connection with water availability and its multiple uses. However, in recent years this resource has been threatened by intense land use and climate change, affecting patterns previously considered to be stationary. The goal of this study was to evaluate trends in changes of patterns of flow, precipitation, and land use in a basin located in the Brazilian Cerrado. 33 years of rainfall, fluviometric, and land use data were used, covering the period of 1985 to 2018 on an annual scale. Mann-Kendall and Sen Slope’s nonparametric test was applied to evaluate the trends in temporal series, as well as the Spearman Rho and Pettit, which were used to analyze the correlations between variables and detect the point of change in the series, respectively. The results show statistically significant trends in flow reduction over time. At the same time, a considerable reduction in natural areas occurred, with an increase of +750% in agricultural areas. The results also show that although a tendency to reduce precipitation was detected, its magnitude was not significant, with land use changes being the main factor for the negative changes in the flow of the Rio Grande tributary.A vazão é umas das variáveis hidrológicas de maior interesse por sua importância econômica e ligação direta com a disponibilidade para os usos múltiplos da água. Nos últimos anos, no entanto, esse recurso tem sido ameaçado pelas grandes alterações no uso e ocupação do solo e pelas mudanças climáticas, com alterações nos padrões antes tido como estacionários. O objetivo deste estudo foi avaliar as tendências de mudança nos padrões de vazão, precipitação e de uso e ocupação do solo e sua correlação ao longo do tempo na bacia do Alto Rio Grande. Foram utilizados 33 anos de dados pluviométricos, fluviométricos e mapas de uso e ocupação do solo para o período de 1985–2018, em escala anual. Para indicar a presença ou não tendências nas séries históricas, foi aplicado o teste não param trico de Mann-Kendall; para avaliar a magnitude dessas tendências, foi utilizado o coeficiente Sen’s Slope, além dos testes de Spearman Rho e Pettitt para correlacionar as variáveis e detectar o ponto de mudança nas séries, respectivamente. Os resultados inferem tendências de redução no posto fluviométrico verificado, estatisticamente significante a 5% de probabilidade. Concomitantemente, houve considerável redução das áreas naturais e ascensão de +750% das áreas agrícolas. Os resultados mostram ainda que, embora tenha sido detectada uma tendência de redução na precipitação, sua magnitude não foi relevante quando relacionada vazão, sendo as mudanças do uso e ocupação do solo o principal fator para as mudanças negativas na vazão do afluente Rio Grande.Associação Brasileira de Engenharia Sanitária e Ambiental (ABES)2022-03-26info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/xmlhttps://www.rbciamb.com.br/Publicacoes_RBCIAMB/article/view/109710.5327/Z2176-94781097Revista Brasileira de Ciências Ambientais (RBCIAMB); v. 57 n. 1 (2022): RBCIAMB - ISSN 2176-9478 - Março; 137-147Revista Brasileira de Ciências Ambientais (RBCIAMB); Vol. 57 No. 1 (2022): RBCIAMB - ISSN 2176-9478 - March; 137-1472176-94781808-4524reponame:Revista Brasileira de Ciências Ambientais (Online)instname:Associação Brasileira de Engenharia Sanitária e Ambiental (ABES)instacron:ABESenghttps://www.rbciamb.com.br/Publicacoes_RBCIAMB/article/view/1097/743https://www.rbciamb.com.br/Publicacoes_RBCIAMB/article/view/1097/756Copyright (c) 2022 Brazilian Journal of Environmental Sciences (Online)http://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessda Silva, Lorena SouzaFerraz, Lorena Limade Sousa, Lucas FariasSilva Santos, Carlos AmiltonRocha, Felizardo Adenilson2023-11-09T17:39:24Zoai:ojs.www.rbciamb.com.br:article/1097Revistahttp://www.rbciamb.com.br/index.php/Publicacoes_RBCIAMBhttps://www.rbciamb.com.br/Publicacoes_RBCIAMB/oairbciamb@abes-dn.org.br||2176-94781804-4524opendoar:2023-11-09T17:39:24Revista Brasileira de Ciências Ambientais (Online) - Associação Brasileira de Engenharia Sanitária e Ambiental (ABES)false |
dc.title.none.fl_str_mv |
Trend in hydrological series and land use changes in a tropical basin at Northeast Brazil Tendência em séries hidrológicas e de mudanças no uso e cobertura da terra em uma bacia tropical do Nordeste do Brasil |
title |
Trend in hydrological series and land use changes in a tropical basin at Northeast Brazil |
spellingShingle |
Trend in hydrological series and land use changes in a tropical basin at Northeast Brazil da Silva, Lorena Souza estacionariedade; vazão; testes não paramétricos; rio Rio Grande. stacionariety; flow; nonparametric tests; Rio Grande river. |
title_short |
Trend in hydrological series and land use changes in a tropical basin at Northeast Brazil |
title_full |
Trend in hydrological series and land use changes in a tropical basin at Northeast Brazil |
title_fullStr |
Trend in hydrological series and land use changes in a tropical basin at Northeast Brazil |
title_full_unstemmed |
Trend in hydrological series and land use changes in a tropical basin at Northeast Brazil |
title_sort |
Trend in hydrological series and land use changes in a tropical basin at Northeast Brazil |
author |
da Silva, Lorena Souza |
author_facet |
da Silva, Lorena Souza Ferraz, Lorena Lima de Sousa, Lucas Farias Silva Santos, Carlos Amilton Rocha, Felizardo Adenilson |
author_role |
author |
author2 |
Ferraz, Lorena Lima de Sousa, Lucas Farias Silva Santos, Carlos Amilton Rocha, Felizardo Adenilson |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
da Silva, Lorena Souza Ferraz, Lorena Lima de Sousa, Lucas Farias Silva Santos, Carlos Amilton Rocha, Felizardo Adenilson |
dc.subject.por.fl_str_mv |
estacionariedade; vazão; testes não paramétricos; rio Rio Grande. stacionariety; flow; nonparametric tests; Rio Grande river. |
topic |
estacionariedade; vazão; testes não paramétricos; rio Rio Grande. stacionariety; flow; nonparametric tests; Rio Grande river. |
description |
Flow is one of the hydrological variables of greatest interest due to its connection with water availability and its multiple uses. However, in recent years this resource has been threatened by intense land use and climate change, affecting patterns previously considered to be stationary. The goal of this study was to evaluate trends in changes of patterns of flow, precipitation, and land use in a basin located in the Brazilian Cerrado. 33 years of rainfall, fluviometric, and land use data were used, covering the period of 1985 to 2018 on an annual scale. Mann-Kendall and Sen Slope’s nonparametric test was applied to evaluate the trends in temporal series, as well as the Spearman Rho and Pettit, which were used to analyze the correlations between variables and detect the point of change in the series, respectively. The results show statistically significant trends in flow reduction over time. At the same time, a considerable reduction in natural areas occurred, with an increase of +750% in agricultural areas. The results also show that although a tendency to reduce precipitation was detected, its magnitude was not significant, with land use changes being the main factor for the negative changes in the flow of the Rio Grande tributary. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-03-26 |
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://www.rbciamb.com.br/Publicacoes_RBCIAMB/article/view/1097 10.5327/Z2176-94781097 |
url |
https://www.rbciamb.com.br/Publicacoes_RBCIAMB/article/view/1097 |
identifier_str_mv |
10.5327/Z2176-94781097 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.rbciamb.com.br/Publicacoes_RBCIAMB/article/view/1097/743 https://www.rbciamb.com.br/Publicacoes_RBCIAMB/article/view/1097/756 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2022 Brazilian Journal of Environmental Sciences (Online) http://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2022 Brazilian Journal of Environmental Sciences (Online) http://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/xml |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Engenharia Sanitária e Ambiental (ABES) |
publisher.none.fl_str_mv |
Associação Brasileira de Engenharia Sanitária e Ambiental (ABES) |
dc.source.none.fl_str_mv |
Revista Brasileira de Ciências Ambientais (RBCIAMB); v. 57 n. 1 (2022): RBCIAMB - ISSN 2176-9478 - Março; 137-147 Revista Brasileira de Ciências Ambientais (RBCIAMB); Vol. 57 No. 1 (2022): RBCIAMB - ISSN 2176-9478 - March; 137-147 2176-9478 1808-4524 reponame:Revista Brasileira de Ciências Ambientais (Online) instname:Associação Brasileira de Engenharia Sanitária e Ambiental (ABES) instacron:ABES |
instname_str |
Associação Brasileira de Engenharia Sanitária e Ambiental (ABES) |
instacron_str |
ABES |
institution |
ABES |
reponame_str |
Revista Brasileira de Ciências Ambientais (Online) |
collection |
Revista Brasileira de Ciências Ambientais (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Ciências Ambientais (Online) - Associação Brasileira de Engenharia Sanitária e Ambiental (ABES) |
repository.mail.fl_str_mv |
rbciamb@abes-dn.org.br|| |
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