Identificação de áreas de clareira na floresta amazônica por meio de dados lidar, imagens de média resolução espacial e inteligência artificial
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Manancial - Repositório Digital da UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/23365 |
Resumo: | Tropical forests are naturally subject to disturbances, in addition to occurring naturally, they can be caused by global warming, forest fires and deforestation. Thus, it is important to conduct this study, since the practices of selective extraction in tropical forests provide the opening of gaps in the forest canopy, which need studies in order to assess the dynamics and regeneration of these spaces. This study aimed to identify the presence of gaps through medium spatial resolution images and LiDAR sensor, using artificial intelligence in areas of selective forest exploration in the Amazon biome. The study area is located at Fazenda Cauaxi, municipality of Paragominas-PA, in which the forest management activity is performed. To identify the clearings, an orbital image from the Sentinel-2A satellite was used, acquired by the Multi-Spectral Instrument (MSI) sensor, in 2017. For classification of clearings by means of the satellite image, the algorithms were used Random Forest (RF), Support Vectors Machine (SVM) e Artificial Neural Network (ANN), the supervised classification of orbital images was developed in Language R. In addition to the Sentinel-2A images, the study also included the use of LiDAR data to detect and analyze the dynamics of the clearings for the years 2014 and 2017, in order to allow the comparison of the results obtained by both methods. For the detection of gaps with LiDAR data, version 0.0.2 of the ForestGapR package was used. The results indicated that for the classification with Sentinel-2A image, all the algorithms presented values above 0.90 of global accuracy and values above 0.88 of Kappa, when verifying the machine learning algorithms and their respective adjustments, the RF was the one with the highest values, demonstrating an accuracy in the classification process of 0.9938, presenting as the best classifier for the identification of clearings in areas of selective exploration in the Amazon. For the dynamics of gaps in the forest canopy, using LiDAR data, for the years 2014 and 2017, the number of clearings increased by 10,098.00 in 3 years and an increase of 127,521.00 m² of total area. Regarding the comparison of methods, for Sentinel-2A image 229,402.97 m² of gaps were identified, while with LiDAR data 301,090.00 m² of gaps were detected, a difference of 71,687.03 m² of gaps between the methods. When relating the percentage of gaps identified with the use of MSI/Sentinel-2A images to those detected with LiDAR data under similar conditions, the potential of medium resolution images, when associated with artificial intelligence techniques, in the identification of disorders in the forest. Thus, the use of Sentinel products associated with complex processing techniques allows obtaining parameters of forest cover, including for the Amazon region. Finally, this study demonstrates the importance of identifying and analyzing clearings, through remote sensing applications, for monitoring deforestation and illegal logging in the forest, enabling sustainable management in the Brazilian Amazon. |
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2021-12-17T18:20:57Z2021-12-17T18:20:57Z2020-02-20http://repositorio.ufsm.br/handle/1/23365Tropical forests are naturally subject to disturbances, in addition to occurring naturally, they can be caused by global warming, forest fires and deforestation. Thus, it is important to conduct this study, since the practices of selective extraction in tropical forests provide the opening of gaps in the forest canopy, which need studies in order to assess the dynamics and regeneration of these spaces. This study aimed to identify the presence of gaps through medium spatial resolution images and LiDAR sensor, using artificial intelligence in areas of selective forest exploration in the Amazon biome. The study area is located at Fazenda Cauaxi, municipality of Paragominas-PA, in which the forest management activity is performed. To identify the clearings, an orbital image from the Sentinel-2A satellite was used, acquired by the Multi-Spectral Instrument (MSI) sensor, in 2017. For classification of clearings by means of the satellite image, the algorithms were used Random Forest (RF), Support Vectors Machine (SVM) e Artificial Neural Network (ANN), the supervised classification of orbital images was developed in Language R. In addition to the Sentinel-2A images, the study also included the use of LiDAR data to detect and analyze the dynamics of the clearings for the years 2014 and 2017, in order to allow the comparison of the results obtained by both methods. For the detection of gaps with LiDAR data, version 0.0.2 of the ForestGapR package was used. The results indicated that for the classification with Sentinel-2A image, all the algorithms presented values above 0.90 of global accuracy and values above 0.88 of Kappa, when verifying the machine learning algorithms and their respective adjustments, the RF was the one with the highest values, demonstrating an accuracy in the classification process of 0.9938, presenting as the best classifier for the identification of clearings in areas of selective exploration in the Amazon. For the dynamics of gaps in the forest canopy, using LiDAR data, for the years 2014 and 2017, the number of clearings increased by 10,098.00 in 3 years and an increase of 127,521.00 m² of total area. Regarding the comparison of methods, for Sentinel-2A image 229,402.97 m² of gaps were identified, while with LiDAR data 301,090.00 m² of gaps were detected, a difference of 71,687.03 m² of gaps between the methods. When relating the percentage of gaps identified with the use of MSI/Sentinel-2A images to those detected with LiDAR data under similar conditions, the potential of medium resolution images, when associated with artificial intelligence techniques, in the identification of disorders in the forest. Thus, the use of Sentinel products associated with complex processing techniques allows obtaining parameters of forest cover, including for the Amazon region. Finally, this study demonstrates the importance of identifying and analyzing clearings, through remote sensing applications, for monitoring deforestation and illegal logging in the forest, enabling sustainable management in the Brazilian Amazon.As florestas tropicais estão naturalmente submetidas a distúrbios, além de ocorrerem naturalmente podem ser decorrentes do aquecimento global, incêndios florestais e desmatamento. Dessa forma, é importante a realização desse estudo, uma vez que as práticas de extração seletiva nas florestas tropicais propiciam a abertura de clareiras no dossel florestal, as quais necessitam de estudos a fim de avaliar a dinâmica e regeneração desses espaços. Este estudo objetivou identificar a presença de clareiras por meio de imagens de média resolução espacial e sensor LiDAR, utilizando inteligência artificial em áreas de exploração seletiva da floresta no bioma Amazônia. A área de estudo localiza-se na Fazenda Cauaxi, município de Paragominas-PA, na qual é desempenhada a atividade de manejo florestal. Para a identificação das clareiras, utilizou-se imagem orbital do satélite Sentinel-2A, adquirida pelo sensor Multi-Spectral Instrument (MSI), no ano de 2017. Para a classificação de clareiras por meio da imagem de satélite foram utilizados os algoritmos Random Forest (RF), Support Vectors Machine (SVM) e Artificial Neural Network (ANN), a classificação supervisionada de imagem orbitais foi desenvolvida em Linguagem R. Além das imagens Sentinel-2A, o estudo englobou ainda a utilização de dados LiDAR para a detecção e análise da dinâmica das clareiras para os anos de 2014 e 2017, a fim permitir a comparação dos resultados obtidos por ambos os métodos. Para a detecção de clareiras com dados LiDAR, utilizou-se a versão 0.0.2 do pacote ForestGapR. Os resultados indicaram que para a classificação com imagem Sentinel-2A, todos os algoritmos apresentaram valores superiores a 0,90 de acurácia global e valores superiores a 0,88 de Kappa, ao verificar os algoritmos de aprendizado de máquina e seus respectivos ajustes, o RF foi o que apresentou os maiores valores, demonstrando uma acurácia no processo de classificação de 0,9938, apresentando como o melhor classificador para a identificação de clareiras em áreas de exploração seletiva na Amazônia. Já para a dinâmica das clareiras no dossel da floresta, utilizando dados LiDAR, para os anos de 2014 e 2017, aumentou 10.098,00 m² o número de clareiras em 3 anos e um aumento de 127.521,00 m² de área total. Em relação a comparação dos métodos, para imagem Sentinel-2A foi identificado 229.402,97 m² de clareiras, enquanto que com dados LiDAR foi detectado 301.090,00 m² de clareiras, uma diferença de 71.687,03 m² de clareiras entre os métodos. Ao relacionar os percentuais de clareiras identificadas com o uso de imagens MSI/Sentinel-2A aos detectados com dados LiDAR em condições similares, observou-se o potencial das imagens de média resolução, quando associadas a técnicas de inteligência artificial, na identificação de distúrbios na floresta. Assim, o uso de produtos Sentinel associados as técnicas de processamento complexas permitem a obtenção de parâmetros da cobertura florestal, inclusive para a região Amazônica. E por fim, esse estudo demostra a importância da identificação e análise de clareiras, através das aplicações de sensoriamento remoto, para o monitoramento do desmatamento e retirada ilegal de madeira na floresta, possibilitando um manejo sustentável na Amazônia Brasileira.porUniversidade Federal de Santa MariaCentro de Ciências RuraisPrograma de Pós-Graduação em Engenharia FlorestalUFSMBrasilRecursos Florestais e Engenharia FlorestalAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessClareiras no dossel florestalAmazôniaInteligência artificialSensoriamento remotoGaps in the forest canopyAmazonArtificial intelligenceRemote sensingCNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTALIdentificação de áreas de clareira na floresta amazônica por meio de dados lidar, imagens de média resolução espacial e inteligência artificialIdentification of gap areas in the amazon forest through lidar data, medium space resolution images and artificial intelligenceinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisPereira, Rudiney Soareshttp://lattes.cnpq.br/9479801378014588Silva, Emanuel AraújoKurtz, Silvia Margareti de Juli Moraishttp://lattes.cnpq.br/4737002366422187Oliveira, Bruna Andriéli Simões de500200000003600600600a7274a7d-8dcd-466b-9a0d-c2b629e2ca881a79c38f-8826-44e7-b9a5-5ad9c3bc01b3e6d1c135-94cf-4a16-b760-f232683b9690639d17ed-f716-4989-8c23-16bcf543ef84reponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALDIS_PPGEF_2020_OLIVEIRA_BRUNA.pdfDIS_PPGEF_2020_OLIVEIRA_BRUNA.pdfDissertação de Mestradoapplication/pdf3140020http://repositorio.ufsm.br/bitstream/1/23365/1/DIS_PPGEF_2020_OLIVEIRA_BRUNA.pdf78f1b4a4189807dfb602ac6a38996eccMD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; 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dc.title.por.fl_str_mv |
Identificação de áreas de clareira na floresta amazônica por meio de dados lidar, imagens de média resolução espacial e inteligência artificial |
dc.title.alternative.eng.fl_str_mv |
Identification of gap areas in the amazon forest through lidar data, medium space resolution images and artificial intelligence |
title |
Identificação de áreas de clareira na floresta amazônica por meio de dados lidar, imagens de média resolução espacial e inteligência artificial |
spellingShingle |
Identificação de áreas de clareira na floresta amazônica por meio de dados lidar, imagens de média resolução espacial e inteligência artificial Oliveira, Bruna Andriéli Simões de Clareiras no dossel florestal Amazônia Inteligência artificial Sensoriamento remoto Gaps in the forest canopy Amazon Artificial intelligence Remote sensing CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
title_short |
Identificação de áreas de clareira na floresta amazônica por meio de dados lidar, imagens de média resolução espacial e inteligência artificial |
title_full |
Identificação de áreas de clareira na floresta amazônica por meio de dados lidar, imagens de média resolução espacial e inteligência artificial |
title_fullStr |
Identificação de áreas de clareira na floresta amazônica por meio de dados lidar, imagens de média resolução espacial e inteligência artificial |
title_full_unstemmed |
Identificação de áreas de clareira na floresta amazônica por meio de dados lidar, imagens de média resolução espacial e inteligência artificial |
title_sort |
Identificação de áreas de clareira na floresta amazônica por meio de dados lidar, imagens de média resolução espacial e inteligência artificial |
author |
Oliveira, Bruna Andriéli Simões de |
author_facet |
Oliveira, Bruna Andriéli Simões de |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Pereira, Rudiney Soares |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/9479801378014588 |
dc.contributor.referee1.fl_str_mv |
Silva, Emanuel Araújo |
dc.contributor.referee2.fl_str_mv |
Kurtz, Silvia Margareti de Juli Morais |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/4737002366422187 |
dc.contributor.author.fl_str_mv |
Oliveira, Bruna Andriéli Simões de |
contributor_str_mv |
Pereira, Rudiney Soares Silva, Emanuel Araújo Kurtz, Silvia Margareti de Juli Morais |
dc.subject.por.fl_str_mv |
Clareiras no dossel florestal Amazônia Inteligência artificial Sensoriamento remoto |
topic |
Clareiras no dossel florestal Amazônia Inteligência artificial Sensoriamento remoto Gaps in the forest canopy Amazon Artificial intelligence Remote sensing CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
dc.subject.eng.fl_str_mv |
Gaps in the forest canopy Amazon Artificial intelligence Remote sensing |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
description |
Tropical forests are naturally subject to disturbances, in addition to occurring naturally, they can be caused by global warming, forest fires and deforestation. Thus, it is important to conduct this study, since the practices of selective extraction in tropical forests provide the opening of gaps in the forest canopy, which need studies in order to assess the dynamics and regeneration of these spaces. This study aimed to identify the presence of gaps through medium spatial resolution images and LiDAR sensor, using artificial intelligence in areas of selective forest exploration in the Amazon biome. The study area is located at Fazenda Cauaxi, municipality of Paragominas-PA, in which the forest management activity is performed. To identify the clearings, an orbital image from the Sentinel-2A satellite was used, acquired by the Multi-Spectral Instrument (MSI) sensor, in 2017. For classification of clearings by means of the satellite image, the algorithms were used Random Forest (RF), Support Vectors Machine (SVM) e Artificial Neural Network (ANN), the supervised classification of orbital images was developed in Language R. In addition to the Sentinel-2A images, the study also included the use of LiDAR data to detect and analyze the dynamics of the clearings for the years 2014 and 2017, in order to allow the comparison of the results obtained by both methods. For the detection of gaps with LiDAR data, version 0.0.2 of the ForestGapR package was used. The results indicated that for the classification with Sentinel-2A image, all the algorithms presented values above 0.90 of global accuracy and values above 0.88 of Kappa, when verifying the machine learning algorithms and their respective adjustments, the RF was the one with the highest values, demonstrating an accuracy in the classification process of 0.9938, presenting as the best classifier for the identification of clearings in areas of selective exploration in the Amazon. For the dynamics of gaps in the forest canopy, using LiDAR data, for the years 2014 and 2017, the number of clearings increased by 10,098.00 in 3 years and an increase of 127,521.00 m² of total area. Regarding the comparison of methods, for Sentinel-2A image 229,402.97 m² of gaps were identified, while with LiDAR data 301,090.00 m² of gaps were detected, a difference of 71,687.03 m² of gaps between the methods. When relating the percentage of gaps identified with the use of MSI/Sentinel-2A images to those detected with LiDAR data under similar conditions, the potential of medium resolution images, when associated with artificial intelligence techniques, in the identification of disorders in the forest. Thus, the use of Sentinel products associated with complex processing techniques allows obtaining parameters of forest cover, including for the Amazon region. Finally, this study demonstrates the importance of identifying and analyzing clearings, through remote sensing applications, for monitoring deforestation and illegal logging in the forest, enabling sustainable management in the Brazilian Amazon. |
publishDate |
2020 |
dc.date.issued.fl_str_mv |
2020-02-20 |
dc.date.accessioned.fl_str_mv |
2021-12-17T18:20:57Z |
dc.date.available.fl_str_mv |
2021-12-17T18:20:57Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/23365 |
url |
http://repositorio.ufsm.br/handle/1/23365 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.cnpq.fl_str_mv |
500200000003 |
dc.relation.confidence.fl_str_mv |
600 600 600 |
dc.relation.authority.fl_str_mv |
a7274a7d-8dcd-466b-9a0d-c2b629e2ca88 1a79c38f-8826-44e7-b9a5-5ad9c3bc01b3 e6d1c135-94cf-4a16-b760-f232683b9690 639d17ed-f716-4989-8c23-16bcf543ef84 |
dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Rurais |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Engenharia Florestal |
dc.publisher.initials.fl_str_mv |
UFSM |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Recursos Florestais e Engenharia Florestal |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Rurais |
dc.source.none.fl_str_mv |
reponame:Manancial - Repositório Digital da UFSM instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Manancial - Repositório Digital da UFSM |
collection |
Manancial - Repositório Digital da UFSM |
bitstream.url.fl_str_mv |
http://repositorio.ufsm.br/bitstream/1/23365/1/DIS_PPGEF_2020_OLIVEIRA_BRUNA.pdf http://repositorio.ufsm.br/bitstream/1/23365/2/license_rdf http://repositorio.ufsm.br/bitstream/1/23365/3/license.txt http://repositorio.ufsm.br/bitstream/1/23365/4/DIS_PPGEF_2020_OLIVEIRA_BRUNA.pdf.txt http://repositorio.ufsm.br/bitstream/1/23365/5/DIS_PPGEF_2020_OLIVEIRA_BRUNA.pdf.jpg |
bitstream.checksum.fl_str_mv |
78f1b4a4189807dfb602ac6a38996ecc 4460e5956bc1d1639be9ae6146a50347 2f0571ecee68693bd5cd3f17c1e075df c198c2197494a009747b78f67ea66448 84b2d14b353ed1ca8fd923be8b93eb21 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 MD5 MD5 |
repository.name.fl_str_mv |
Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM) |
repository.mail.fl_str_mv |
|
_version_ |
1801223684240703488 |