TEMPORAL EVOLUTION OF DEFORESTATION IN THE WATERSHED OF THE ESTIVA RIVER, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n4p363-370
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Publication Date: | 2015 |
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Format: | Article |
Language: | por |
Source: | Engenharia na Agricultura |
Download full: | https://periodicos.ufv.br/reveng/article/view/544 |
Summary: | The watershed of the Estiva river (3,009.00 km2), a tributary of Uruçuí-Preto river located in the state of Piauí, Brazil, is undergoing a process of deforestation to opening new areas for soybean cultivation, which may be one of the practices that most causes environmental impacts in the region. Thus, the present work sought to analyze the temporal evolution of land use in the watershed of the Estiva river between the years of 1984 to 2010. Six satellite images of the TM sensor on the Landsat 5 satellite were used from years 1984, 1990 1996, 2003, 2006 and 2010. First the images were pre-processed for contrast and geometric corrections. After the initial corrections the images were classified according to an automatic supervised method using the Maximum Likelihood algorithm. The results showed there was an increase of 272.41% (658.26 km2) in land use and occupancy of soil by crops and a consequent advance in deforestation of 30.01% (686.50 km2) in the Cerrado areas and 24.60% of all native forest areas in the Estiva river watershed between the years 1984 to 2010. A total of approximately 680 km2 of the Cerrado area was deforested between 1984 to 2010 for the implementation of crops in the Estiva river watershed. |
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TEMPORAL EVOLUTION OF DEFORESTATION IN THE WATERSHED OF THE ESTIVA RIVER, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n4p363-370NOTA TÉCNICA: EVOLUÇÃO TEMPORAL DO DESMATAMENTO NA BACIA DO RIACHO DA ESTIVA, PIAUÍ - DOI: 10.13083/1414-3984/reveng.v23n4p363-370agriculturacerradosensoriamento remotoThe watershed of the Estiva river (3,009.00 km2), a tributary of Uruçuí-Preto river located in the state of Piauí, Brazil, is undergoing a process of deforestation to opening new areas for soybean cultivation, which may be one of the practices that most causes environmental impacts in the region. Thus, the present work sought to analyze the temporal evolution of land use in the watershed of the Estiva river between the years of 1984 to 2010. Six satellite images of the TM sensor on the Landsat 5 satellite were used from years 1984, 1990 1996, 2003, 2006 and 2010. First the images were pre-processed for contrast and geometric corrections. After the initial corrections the images were classified according to an automatic supervised method using the Maximum Likelihood algorithm. The results showed there was an increase of 272.41% (658.26 km2) in land use and occupancy of soil by crops and a consequent advance in deforestation of 30.01% (686.50 km2) in the Cerrado areas and 24.60% of all native forest areas in the Estiva river watershed between the years 1984 to 2010. A total of approximately 680 km2 of the Cerrado area was deforested between 1984 to 2010 for the implementation of crops in the Estiva river watershed.A bacia do riacho da Estiva (3.009,00 km2), afluente do rio Uruçuí-Preto, localizada no sul Estado do Piauí, sofre um processo de abertura de novas áreas e, consequentemente, supressão da vegetação nativa, devido á incorporação de novas áreas para o cultivo da soja, a qual pode ser potencialmente e efetivamente uma das práticas que mais provoca impactos ambientais na região. Dessa forma, objetivou-se com este trabalho analisar a evolução temporal do uso e ocupação do solo na bacia do riacho da Estiva entre os anos de 1984 a 2010. Foram utilizadas seis cenas do sensor TM do satélite Landsat 5 referentes aos anos 1984, 1990, 1996, 2003, 2006 e 2010. Inicialmente fez-se o pré-processamento das imagens, contraste e correções geométricas. Após as correções iniciais as imagens foram classificadas de forma automática supervisionada utilizando o algoritmo da Máxima Verossimilhança. Os resultados mostraram que houve um aumento de 272,41% (658,26 km2) do uso e ocupação do solo por culturas agrícolas e consequente avanço do desmatamento de 30,01% (686,50 km2) nas áreas de Cerrado e 24,60% de todas as áreas de mata nativa na bacia do riacho da Estiva entre os anos de 1984 a 2010. Tem-se assim que, aproximadamente, 680 km2 de Cerrado foram desmatados entre 1984 a 2010 para implantação de áreas agrícolas na bacia do riacho da Estiva.Universidade Federal de Viçosa - UFV2015-08-28info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufv.br/reveng/article/view/54410.13083/reveng.v23i4.600Engineering in Agriculture; Vol. 23 No. 4 (2015); 363-370Revista Engenharia na Agricultura - REVENG; v. 23 n. 4 (2015); 363-3702175-68131414-398410.13083/reveng.v23i4reponame:Engenharia na Agriculturainstname:Universidade Federal de Viçosa (UFV)instacron:UFVporhttps://periodicos.ufv.br/reveng/article/view/544/374Silva, João Batista LopesSousa, Pedro ArmandoSouza, Kaíse BarbosaAlmeida, Karla Nayara SantosPires, Luanna Chácarainfo:eu-repo/semantics/openAccess2023-01-19T13:22:37Zoai:ojs.periodicos.ufv.br:article/544Revistahttps://periodicos.ufv.br/revengPUBhttps://periodicos.ufv.br/reveng/oairevistaengenharianagricultura@gmail.com||andrerosa@ufv.br||tramitacao.reveng@gmail.com|| reveng@ufv.br2175-68131414-3984opendoar:2023-01-19T13:22:37Engenharia na Agricultura - Universidade Federal de Viçosa (UFV)false |
dc.title.none.fl_str_mv |
TEMPORAL EVOLUTION OF DEFORESTATION IN THE WATERSHED OF THE ESTIVA RIVER, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n4p363-370 NOTA TÉCNICA: EVOLUÇÃO TEMPORAL DO DESMATAMENTO NA BACIA DO RIACHO DA ESTIVA, PIAUÍ - DOI: 10.13083/1414-3984/reveng.v23n4p363-370 |
title |
TEMPORAL EVOLUTION OF DEFORESTATION IN THE WATERSHED OF THE ESTIVA RIVER, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n4p363-370 |
spellingShingle |
TEMPORAL EVOLUTION OF DEFORESTATION IN THE WATERSHED OF THE ESTIVA RIVER, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n4p363-370 Silva, João Batista Lopes agricultura cerrado sensoriamento remoto |
title_short |
TEMPORAL EVOLUTION OF DEFORESTATION IN THE WATERSHED OF THE ESTIVA RIVER, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n4p363-370 |
title_full |
TEMPORAL EVOLUTION OF DEFORESTATION IN THE WATERSHED OF THE ESTIVA RIVER, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n4p363-370 |
title_fullStr |
TEMPORAL EVOLUTION OF DEFORESTATION IN THE WATERSHED OF THE ESTIVA RIVER, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n4p363-370 |
title_full_unstemmed |
TEMPORAL EVOLUTION OF DEFORESTATION IN THE WATERSHED OF THE ESTIVA RIVER, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n4p363-370 |
title_sort |
TEMPORAL EVOLUTION OF DEFORESTATION IN THE WATERSHED OF THE ESTIVA RIVER, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n4p363-370 |
author |
Silva, João Batista Lopes |
author_facet |
Silva, João Batista Lopes Sousa, Pedro Armando Souza, Kaíse Barbosa Almeida, Karla Nayara Santos Pires, Luanna Chácara |
author_role |
author |
author2 |
Sousa, Pedro Armando Souza, Kaíse Barbosa Almeida, Karla Nayara Santos Pires, Luanna Chácara |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Silva, João Batista Lopes Sousa, Pedro Armando Souza, Kaíse Barbosa Almeida, Karla Nayara Santos Pires, Luanna Chácara |
dc.subject.por.fl_str_mv |
agricultura cerrado sensoriamento remoto |
topic |
agricultura cerrado sensoriamento remoto |
description |
The watershed of the Estiva river (3,009.00 km2), a tributary of Uruçuí-Preto river located in the state of Piauí, Brazil, is undergoing a process of deforestation to opening new areas for soybean cultivation, which may be one of the practices that most causes environmental impacts in the region. Thus, the present work sought to analyze the temporal evolution of land use in the watershed of the Estiva river between the years of 1984 to 2010. Six satellite images of the TM sensor on the Landsat 5 satellite were used from years 1984, 1990 1996, 2003, 2006 and 2010. First the images were pre-processed for contrast and geometric corrections. After the initial corrections the images were classified according to an automatic supervised method using the Maximum Likelihood algorithm. The results showed there was an increase of 272.41% (658.26 km2) in land use and occupancy of soil by crops and a consequent advance in deforestation of 30.01% (686.50 km2) in the Cerrado areas and 24.60% of all native forest areas in the Estiva river watershed between the years 1984 to 2010. A total of approximately 680 km2 of the Cerrado area was deforested between 1984 to 2010 for the implementation of crops in the Estiva river watershed. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-08-28 |
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.ufv.br/reveng/article/view/544 10.13083/reveng.v23i4.600 |
url |
https://periodicos.ufv.br/reveng/article/view/544 |
identifier_str_mv |
10.13083/reveng.v23i4.600 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.ufv.br/reveng/article/view/544/374 |
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 |
Universidade Federal de Viçosa - UFV |
publisher.none.fl_str_mv |
Universidade Federal de Viçosa - UFV |
dc.source.none.fl_str_mv |
Engineering in Agriculture; Vol. 23 No. 4 (2015); 363-370 Revista Engenharia na Agricultura - REVENG; v. 23 n. 4 (2015); 363-370 2175-6813 1414-3984 10.13083/reveng.v23i4 reponame:Engenharia na Agricultura instname:Universidade Federal de Viçosa (UFV) instacron:UFV |
instname_str |
Universidade Federal de Viçosa (UFV) |
instacron_str |
UFV |
institution |
UFV |
reponame_str |
Engenharia na Agricultura |
collection |
Engenharia na Agricultura |
repository.name.fl_str_mv |
Engenharia na Agricultura - Universidade Federal de Viçosa (UFV) |
repository.mail.fl_str_mv |
revistaengenharianagricultura@gmail.com||andrerosa@ufv.br||tramitacao.reveng@gmail.com|| reveng@ufv.br |
_version_ |
1800211145651388416 |