Multitemporal diagnosis of land use and cover and water quality in the Jequitinhonha river basin in Minas Gerais as a support to surface water resources management
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Revista Espinhaço |
Texto Completo: | https://revistas.ufvjm.edu.br/revista-espinhaco/article/view/141 |
Resumo: | The Jequitinhonha river watershed has been affected by land cover and use changes, resulting in local water resources quality impairment, since the beginning of the exploitation cycle of gold and diamond, especially during 18th century. Despite low water availability and pressures on local waters, water resources management tools such as water usage charge and qualitative granting of permits have not yet been fully implemented in the watershed. In this context, this paper aims to relate the evolution of land use and occupation in the basin with the water quality parameters that make up the Water Quality Index (WQI), identifying the main sources of pressure on water resources. Land cover and use were classified using data provided by MapBiomas Project in 2000 and 2014, while water quality data were obtained from the monitoring program conducted by the Minas Gerais Institute for Water Management (IGAM). Data analysis was conducted through descriptive statistical analysis and construction of multiple regression models. The results showed that agriculture and livestock activities were the ones that most influenced the water quality in the watershed during the study period (2000 and 2014), especially on Nitrate, Total Solids and pH values. In addition, the results in the dry season were more significant compared to the rainy season, probably due to greater environmental stability in the drought. Thus, the deterioration of environmental quality in the watershed, mainly due to the increase of areas with anthropogenic activities to the detriment of natural areas, has impaired its water quality. |
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Multitemporal diagnosis of land use and cover and water quality in the Jequitinhonha river basin in Minas Gerais as a support to surface water resources managementDiagnóstico multitemporal do uso e cobertura da terra e qualidade das águas na bacia do rio Jequitinhonha em Minas Gerais como subsídio à gestão dos recursos hídricos superficiaisUso da terraQualidade das águasGestão de recursos hídricosrio JequitinhonhaLand Usewater qualitywater resources managementJequitinhonha riverThe Jequitinhonha river watershed has been affected by land cover and use changes, resulting in local water resources quality impairment, since the beginning of the exploitation cycle of gold and diamond, especially during 18th century. Despite low water availability and pressures on local waters, water resources management tools such as water usage charge and qualitative granting of permits have not yet been fully implemented in the watershed. In this context, this paper aims to relate the evolution of land use and occupation in the basin with the water quality parameters that make up the Water Quality Index (WQI), identifying the main sources of pressure on water resources. Land cover and use were classified using data provided by MapBiomas Project in 2000 and 2014, while water quality data were obtained from the monitoring program conducted by the Minas Gerais Institute for Water Management (IGAM). Data analysis was conducted through descriptive statistical analysis and construction of multiple regression models. The results showed that agriculture and livestock activities were the ones that most influenced the water quality in the watershed during the study period (2000 and 2014), especially on Nitrate, Total Solids and pH values. In addition, the results in the dry season were more significant compared to the rainy season, probably due to greater environmental stability in the drought. Thus, the deterioration of environmental quality in the watershed, mainly due to the increase of areas with anthropogenic activities to the detriment of natural areas, has impaired its water quality.A bacia hidrográfica do rio Jequitinhonha tem sido afetada por alterações na cobertura e no uso da terra e, consequentemente, na qualidade dos recursos hídricos locais desde o ciclo de exploração minerária de ouro e diamante, especialmente durante o século XVIII. Apesar da baixa disponibilidade hídrica e pressões sobre os recursos hídricos locais, os instrumentos de gestão dos recursos hídricos, tais como a cobrança e outorga qualitativa ainda não foram efetivados na bacia. Neste contexto, este trabalho busca relacionar a evolução do uso e ocupação da terra na bacia com os parâmetros de qualidade da água que compõem o Índice de Qualidade da Água (IQA), identificando as principais fontes de pressão sobre os recursos hídricos. A classificação do uso e cobertura da terra foi realizada por meio de dados disponibilizados pelo Projeto MapBiomas no ano 2000 e 2014, enquanto os dados de qualidade das águas foram obtidos junto ao programa de monitoramento realizado pelo Instituto Mineiro de Gestão das Águas (IGAM). A análise dos dados foi conduzida por meio de análise estatística descritiva e construção de modelos de regressão múltipla. Os resultados evidenciaram que as atividades de agricultura e pecuária foram as que mais influenciaram a qualidade das águas na bacia no período estudado (2000 e 2014), especialmente sobre os valores de Nitrato, Sólidos totais e pH. Além disto, os resultados no período seco foram mais significativos em relação ao período chuvoso, provavelmente devido a maior estabilidade ambiental na seca. Deste modo, a deterioração da qualidade ambiental na bacia, principalmente, devido ao aumento de áreas com atividades antrópicas em detrimento das áreas naturais tem comprometido a qualidade de suas águas.UFVJM2019-12-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArtigo avaliado pelos Paresapplication/pdfhttps://revistas.ufvjm.edu.br/revista-espinhaco/article/view/14110.5281/zenodo.3583328Revista Espinhaço ; Revista Espinhaço #152317-0611reponame:Revista Espinhaçoinstname:Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM)instacron:UFVJMporhttps://revistas.ufvjm.edu.br/revista-espinhaco/article/view/141/152Copyright (c) 2022 Revista Espinhaço https://creativecommons.org/licenses/by-nc-nd/4.0info:eu-repo/semantics/openAccessJúnior, Hélio de MagalhãesLopes, Frederico AzevedoMacedo, Diego Rodrigues2022-07-22T18:47:59Zoai:ojs.pkp.sfu.ca:article/141Revistahttps://revistaespinhaco.com/index.php/revista/indexPUBhttps://revistas.ufvjm.edu.br/revista-espinhaco/oairevista.espinhaco@gmail.com || doug.sathler@gmail.com2317-06112317-0611opendoar:2022-07-22T18:47:59Revista Espinhaço - Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM)false |
dc.title.none.fl_str_mv |
Multitemporal diagnosis of land use and cover and water quality in the Jequitinhonha river basin in Minas Gerais as a support to surface water resources management Diagnóstico multitemporal do uso e cobertura da terra e qualidade das águas na bacia do rio Jequitinhonha em Minas Gerais como subsídio à gestão dos recursos hídricos superficiais |
title |
Multitemporal diagnosis of land use and cover and water quality in the Jequitinhonha river basin in Minas Gerais as a support to surface water resources management |
spellingShingle |
Multitemporal diagnosis of land use and cover and water quality in the Jequitinhonha river basin in Minas Gerais as a support to surface water resources management Júnior, Hélio de Magalhães Uso da terra Qualidade das águas Gestão de recursos hídricos rio Jequitinhonha Land Use water quality water resources management Jequitinhonha river |
title_short |
Multitemporal diagnosis of land use and cover and water quality in the Jequitinhonha river basin in Minas Gerais as a support to surface water resources management |
title_full |
Multitemporal diagnosis of land use and cover and water quality in the Jequitinhonha river basin in Minas Gerais as a support to surface water resources management |
title_fullStr |
Multitemporal diagnosis of land use and cover and water quality in the Jequitinhonha river basin in Minas Gerais as a support to surface water resources management |
title_full_unstemmed |
Multitemporal diagnosis of land use and cover and water quality in the Jequitinhonha river basin in Minas Gerais as a support to surface water resources management |
title_sort |
Multitemporal diagnosis of land use and cover and water quality in the Jequitinhonha river basin in Minas Gerais as a support to surface water resources management |
author |
Júnior, Hélio de Magalhães |
author_facet |
Júnior, Hélio de Magalhães Lopes, Frederico Azevedo Macedo, Diego Rodrigues |
author_role |
author |
author2 |
Lopes, Frederico Azevedo Macedo, Diego Rodrigues |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Júnior, Hélio de Magalhães Lopes, Frederico Azevedo Macedo, Diego Rodrigues |
dc.subject.por.fl_str_mv |
Uso da terra Qualidade das águas Gestão de recursos hídricos rio Jequitinhonha Land Use water quality water resources management Jequitinhonha river |
topic |
Uso da terra Qualidade das águas Gestão de recursos hídricos rio Jequitinhonha Land Use water quality water resources management Jequitinhonha river |
description |
The Jequitinhonha river watershed has been affected by land cover and use changes, resulting in local water resources quality impairment, since the beginning of the exploitation cycle of gold and diamond, especially during 18th century. Despite low water availability and pressures on local waters, water resources management tools such as water usage charge and qualitative granting of permits have not yet been fully implemented in the watershed. In this context, this paper aims to relate the evolution of land use and occupation in the basin with the water quality parameters that make up the Water Quality Index (WQI), identifying the main sources of pressure on water resources. Land cover and use were classified using data provided by MapBiomas Project in 2000 and 2014, while water quality data were obtained from the monitoring program conducted by the Minas Gerais Institute for Water Management (IGAM). Data analysis was conducted through descriptive statistical analysis and construction of multiple regression models. The results showed that agriculture and livestock activities were the ones that most influenced the water quality in the watershed during the study period (2000 and 2014), especially on Nitrate, Total Solids and pH values. In addition, the results in the dry season were more significant compared to the rainy season, probably due to greater environmental stability in the drought. Thus, the deterioration of environmental quality in the watershed, mainly due to the increase of areas with anthropogenic activities to the detriment of natural areas, has impaired its water quality. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-12-07 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artigo avaliado pelos Pares |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistas.ufvjm.edu.br/revista-espinhaco/article/view/141 10.5281/zenodo.3583328 |
url |
https://revistas.ufvjm.edu.br/revista-espinhaco/article/view/141 |
identifier_str_mv |
10.5281/zenodo.3583328 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://revistas.ufvjm.edu.br/revista-espinhaco/article/view/141/152 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2022 Revista Espinhaço https://creativecommons.org/licenses/by-nc-nd/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2022 Revista Espinhaço https://creativecommons.org/licenses/by-nc-nd/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UFVJM |
publisher.none.fl_str_mv |
UFVJM |
dc.source.none.fl_str_mv |
Revista Espinhaço ; Revista Espinhaço #15 2317-0611 reponame:Revista Espinhaço instname:Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM) instacron:UFVJM |
instname_str |
Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM) |
instacron_str |
UFVJM |
institution |
UFVJM |
reponame_str |
Revista Espinhaço |
collection |
Revista Espinhaço |
repository.name.fl_str_mv |
Revista Espinhaço - Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM) |
repository.mail.fl_str_mv |
revista.espinhaco@gmail.com || doug.sathler@gmail.com |
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