Impact of topographical factors and the land use and cover in the water quality of the basin of the Roseira stream, Jundiaí, São Paulo - Brazil
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.5380/raega.v51i0.70081 http://hdl.handle.net/11449/222289 |
Resumo: | The different forms of land use and cover, combined with the topography of a basin, modulate the occurrence and extent of erosion in water supply areas. This study aimed to examine the influence of topographic factors (slope and altimetry), combined with land use and land cover, on the turbidity of the Roseira Stream Basin, a sub-basin in the Jundiaí-Mirim River Basin, in the State of Sao Paulo, Brazil. According to the results, in general, most of the sampling points presented turbidity indexes above that stipulated in the law for Class I rivers, with the most downstream areas of the sub-basin being the most critical places with respect to this parameter. Pearson's linear correlation coefficients (r) and determination (R2) showed a negative correlation between turbidity and slope (R2 = 0.52). We concluded that disorderly urbanization in the flatter parts of the basin is a determining factor for the observed turbidity levels, despite the natural conditions of the basin in terms of topography and forest cover, indicating a restriction to the formation of runoff and sediment dragging. |
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Impact of topographical factors and the land use and cover in the water quality of the basin of the Roseira stream, Jundiaí, São Paulo - BrazilImpacto dos fatores topográficos e do uso e cobertura da terra na qualidade das águas da bacia do córrego da Roseira, Jundiaí, São Paulo - BrasilAltimetryPearson correlation coefficientSlopeTurbidityThe different forms of land use and cover, combined with the topography of a basin, modulate the occurrence and extent of erosion in water supply areas. This study aimed to examine the influence of topographic factors (slope and altimetry), combined with land use and land cover, on the turbidity of the Roseira Stream Basin, a sub-basin in the Jundiaí-Mirim River Basin, in the State of Sao Paulo, Brazil. According to the results, in general, most of the sampling points presented turbidity indexes above that stipulated in the law for Class I rivers, with the most downstream areas of the sub-basin being the most critical places with respect to this parameter. Pearson's linear correlation coefficients (r) and determination (R2) showed a negative correlation between turbidity and slope (R2 = 0.52). We concluded that disorderly urbanization in the flatter parts of the basin is a determining factor for the observed turbidity levels, despite the natural conditions of the basin in terms of topography and forest cover, indicating a restriction to the formation of runoff and sediment dragging.Universidade Estadual Paulista - UNESP Instituto de Ciência e Tecnologia de SorocabaUniversidade Estadual Paulista - UNESP Instituto de Ciência e Tecnologia de SorocabaUniversidade Estadual Paulista (UNESP)de Lima Andrade, Erik [UNESP]de Faria, Carol Christina [UNESP]Maia, Lauro Pessoa [UNESP]Takikawa, Bruno Yuji [UNESP]da Silva Manoel, Márcia Pereira [UNESP]Ribeiro, Admilson Írio [UNESP]de Medeiros, Gerson Araujo [UNESP]2022-04-28T19:43:44Z2022-04-28T19:43:44Z2021-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article58-80http://dx.doi.org/10.5380/raega.v51i0.70081RA'E GA - O Espaco Geografico em Analise, v. 51, p. 58-80.2177-27381516-4136http://hdl.handle.net/11449/22228910.5380/raega.v51i0.700812-s2.0-85113600280Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRA'E GA - O Espaco Geografico em Analiseinfo:eu-repo/semantics/openAccess2022-04-28T19:43:44Zoai:repositorio.unesp.br:11449/222289Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:58:35.142677Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Impact of topographical factors and the land use and cover in the water quality of the basin of the Roseira stream, Jundiaí, São Paulo - Brazil Impacto dos fatores topográficos e do uso e cobertura da terra na qualidade das águas da bacia do córrego da Roseira, Jundiaí, São Paulo - Brasil |
title |
Impact of topographical factors and the land use and cover in the water quality of the basin of the Roseira stream, Jundiaí, São Paulo - Brazil |
spellingShingle |
Impact of topographical factors and the land use and cover in the water quality of the basin of the Roseira stream, Jundiaí, São Paulo - Brazil de Lima Andrade, Erik [UNESP] Altimetry Pearson correlation coefficient Slope Turbidity |
title_short |
Impact of topographical factors and the land use and cover in the water quality of the basin of the Roseira stream, Jundiaí, São Paulo - Brazil |
title_full |
Impact of topographical factors and the land use and cover in the water quality of the basin of the Roseira stream, Jundiaí, São Paulo - Brazil |
title_fullStr |
Impact of topographical factors and the land use and cover in the water quality of the basin of the Roseira stream, Jundiaí, São Paulo - Brazil |
title_full_unstemmed |
Impact of topographical factors and the land use and cover in the water quality of the basin of the Roseira stream, Jundiaí, São Paulo - Brazil |
title_sort |
Impact of topographical factors and the land use and cover in the water quality of the basin of the Roseira stream, Jundiaí, São Paulo - Brazil |
author |
de Lima Andrade, Erik [UNESP] |
author_facet |
de Lima Andrade, Erik [UNESP] de Faria, Carol Christina [UNESP] Maia, Lauro Pessoa [UNESP] Takikawa, Bruno Yuji [UNESP] da Silva Manoel, Márcia Pereira [UNESP] Ribeiro, Admilson Írio [UNESP] de Medeiros, Gerson Araujo [UNESP] |
author_role |
author |
author2 |
de Faria, Carol Christina [UNESP] Maia, Lauro Pessoa [UNESP] Takikawa, Bruno Yuji [UNESP] da Silva Manoel, Márcia Pereira [UNESP] Ribeiro, Admilson Írio [UNESP] de Medeiros, Gerson Araujo [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
de Lima Andrade, Erik [UNESP] de Faria, Carol Christina [UNESP] Maia, Lauro Pessoa [UNESP] Takikawa, Bruno Yuji [UNESP] da Silva Manoel, Márcia Pereira [UNESP] Ribeiro, Admilson Írio [UNESP] de Medeiros, Gerson Araujo [UNESP] |
dc.subject.por.fl_str_mv |
Altimetry Pearson correlation coefficient Slope Turbidity |
topic |
Altimetry Pearson correlation coefficient Slope Turbidity |
description |
The different forms of land use and cover, combined with the topography of a basin, modulate the occurrence and extent of erosion in water supply areas. This study aimed to examine the influence of topographic factors (slope and altimetry), combined with land use and land cover, on the turbidity of the Roseira Stream Basin, a sub-basin in the Jundiaí-Mirim River Basin, in the State of Sao Paulo, Brazil. According to the results, in general, most of the sampling points presented turbidity indexes above that stipulated in the law for Class I rivers, with the most downstream areas of the sub-basin being the most critical places with respect to this parameter. Pearson's linear correlation coefficients (r) and determination (R2) showed a negative correlation between turbidity and slope (R2 = 0.52). We concluded that disorderly urbanization in the flatter parts of the basin is a determining factor for the observed turbidity levels, despite the natural conditions of the basin in terms of topography and forest cover, indicating a restriction to the formation of runoff and sediment dragging. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-08-01 2022-04-28T19:43:44Z 2022-04-28T19:43:44Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.5380/raega.v51i0.70081 RA'E GA - O Espaco Geografico em Analise, v. 51, p. 58-80. 2177-2738 1516-4136 http://hdl.handle.net/11449/222289 10.5380/raega.v51i0.70081 2-s2.0-85113600280 |
url |
http://dx.doi.org/10.5380/raega.v51i0.70081 http://hdl.handle.net/11449/222289 |
identifier_str_mv |
RA'E GA - O Espaco Geografico em Analise, v. 51, p. 58-80. 2177-2738 1516-4136 10.5380/raega.v51i0.70081 2-s2.0-85113600280 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
RA'E GA - O Espaco Geografico em Analise |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
58-80 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808129478805684224 |