Mapeamento do uso e cobertura vegetal do município de Floresta-PE

Detalhes bibliográficos
Autor(a) principal: SILVA, Emanuel Araújo
Data de Publicação: 2011
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Biblioteca Digital de Teses e Dissertações da UFRPE
Texto Completo: http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5463
Resumo: The loss of diversity of forest communities by human actions has been reducing dramatically the natural areas of the Caatinga biome, thus increasing the concern to evaluate changes in usage patterns and land cover. This study aimed to mapper the dynamic of change in land use and forest cover in the last 21 years (1987-2008), municipality of Floresta, Pernambuco Outback aiming to subsidize forest management, beyond to monitor the transformation processes in which the town has experienced over the period. It had been used LANDSAT 5 satellite images for the periods May 1987, 1997 and 2008. In addition, SPRING application were utilized for preparation of base map data and digital processing of images. The images were segmented and classified by the algorithm Bhattacharya, in order to produce thematic maps in the following land uses: dense vegetation, semi-dense vegetation, bare soil, agriculture (crop / livestock), water bodies and riparian vegetation. Afterward were made reliability analysis of supervised classification by the Kappa index, which based on general performance, obtained a probability greater than 98% of classes had been mapped properly. Then was obtained maps of the years 1987, 1997 and 2008. For a period of 21 years the forest cover decreased from 42.21% of the total territory in 1987 to 27.38% in 2008. The exposed soil had a gain of 8.61%, the agricultural class has accumulated a gain of 5.75%, water bodies, over the time, showed an increase of 4.03% and the riparian forest had a tendency to fall over the study periods with a total loss of 3.57%. These data reflect the changes that the council has been going on forest land use. The decrease of forest cover in the town of Floresta-PE between 1987 and 2008 was the main consequence of the interaction of climate and human impact forest resources, urban expansion requirement and agricultural activities. The results demonstrate the potential of Remote Sensing techniques and GIS mapping of land use, for its convenience and speed, may be useful to support sustainable forest management aiming at definition of subsidies to public policy.
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spelling FERREIRA, Rinaldo Luiz CaracioloSILVA, José Antônio Aleixo daSÁ, Iêdo BezerraMORAIS NETO, João Miguel deMOURA, Geber Barbosa de AlbuquerqueDUARTE, Simone Mirtes AraújoFELICIANO, Ana Lícia Patriotahttp://lattes.cnpq.br/2765651276275384SILVA, Emanuel Araújo2016-08-24T12:46:06Z2011-02-18SILVA, Emanuel Araújo. Mapeamento do uso e cobertura vegetal do município de Floresta-PE. 2011.69 f. Dissertação (Programa de Pós-Graduação em Ciências Florestais) - Universidade Federal Rural de Pernambuco, Recife.http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5463The loss of diversity of forest communities by human actions has been reducing dramatically the natural areas of the Caatinga biome, thus increasing the concern to evaluate changes in usage patterns and land cover. This study aimed to mapper the dynamic of change in land use and forest cover in the last 21 years (1987-2008), municipality of Floresta, Pernambuco Outback aiming to subsidize forest management, beyond to monitor the transformation processes in which the town has experienced over the period. It had been used LANDSAT 5 satellite images for the periods May 1987, 1997 and 2008. In addition, SPRING application were utilized for preparation of base map data and digital processing of images. The images were segmented and classified by the algorithm Bhattacharya, in order to produce thematic maps in the following land uses: dense vegetation, semi-dense vegetation, bare soil, agriculture (crop / livestock), water bodies and riparian vegetation. Afterward were made reliability analysis of supervised classification by the Kappa index, which based on general performance, obtained a probability greater than 98% of classes had been mapped properly. Then was obtained maps of the years 1987, 1997 and 2008. For a period of 21 years the forest cover decreased from 42.21% of the total territory in 1987 to 27.38% in 2008. The exposed soil had a gain of 8.61%, the agricultural class has accumulated a gain of 5.75%, water bodies, over the time, showed an increase of 4.03% and the riparian forest had a tendency to fall over the study periods with a total loss of 3.57%. These data reflect the changes that the council has been going on forest land use. The decrease of forest cover in the town of Floresta-PE between 1987 and 2008 was the main consequence of the interaction of climate and human impact forest resources, urban expansion requirement and agricultural activities. The results demonstrate the potential of Remote Sensing techniques and GIS mapping of land use, for its convenience and speed, may be useful to support sustainable forest management aiming at definition of subsidies to public policy.A perda da diversidade das comunidades florestais, por meio de ações antrópicas, vem reduzindo drasticamente as áreas naturais do bioma Caatinga, aumentando assim, a preocupação de avaliar as mudanças nos padrões de uso e cobertura da terra. Este trabalho teve como objetivo mapear a dinâmica de mudança do uso da terra e da cobertura florestal nos últimos 21 anos (1987 a 2008), no município de Floresta, Sertão de Pernambuco visando subsidiar a gestão florestal, além de monitorar os processos de transformações em que o município vem passando ao longo do período. Foram utilizadas imagens de satélite LANDSAT 5 nos períodos de 1987, 1997 e 2008. Utilizou-se o aplicativo SPRING para elaboração da base de dados cartográficos e do processamento digital das imagens. As imagens foram segmentadas e classificadas pelo algoritmo de Bhattacharya, com a finalidade de produzir mapas temáticos nos seguintes usos da terra: vegetação densa, vegetação semi-densa, solo exposto, agropecuária (cultivos/pecuária), corpos d´água e mata ciliar. Posteriormente efetuou-se a análise de confiança da classificação supervisionada através do índice de Kappa, que, com base no desempenho geral, obteve probabilidade maior do que 98% de ter mapeado as classes corretamente. Em seguida obtiveram-se mapas dos anos de 1987, 1997 e 2008. Para um período de 21 anos a cobertura florestal recuou de 42,21% do total do território em 1987, para 27,38% em 2008. O solo exposto teve um ganho de 8,61%, a classe agropecuária acumulou um ganho de 5,75%, os corpos d’água, ao longo do tempo, demonstraram um aumento de 4,03% e a mata ciliar teve tendência à queda ao longo dos períodos analisados com uma perda total de 3,57%. Esses dados refletem as transformações que o município de Floresta vem passando quanto o uso da terra. A diminuição da cobertura florestal do município entre 1987 e 2008 foi a principal consequência da interação clima e pressão antrópica por recursos florestais, necessidade de expansão urbana e atividades agropecuárias. Os resultados obtidos demonstram o potencial de técnicas de Sensoriamento Remoto e Geoprocessamento no mapeamento do uso da terra, por sua praticidade e rapidez, podem ser úteis para apoiar a gestão florestal sustentável visando subsídios para definição de políticas públicas.Submitted by (lucia.rodrigues@ufrpe.br) on 2016-08-24T12:46:06Z No. of bitstreams: 1 Emanuel Araujo Silva.pdf: 2530004 bytes, checksum: 635097b3eedb86b3bdd1cf64b6bea967 (MD5)Made available in DSpace on 2016-08-24T12:46:06Z (GMT). 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dc.title.por.fl_str_mv Mapeamento do uso e cobertura vegetal do município de Floresta-PE
title Mapeamento do uso e cobertura vegetal do município de Floresta-PE
spellingShingle Mapeamento do uso e cobertura vegetal do município de Floresta-PE
SILVA, Emanuel Araújo
Sensoriamento remoto
Uso e ocupação da terra
Semiárido
Caatinga
Semiarid
Remote sensing
Land use and occupation
CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL
title_short Mapeamento do uso e cobertura vegetal do município de Floresta-PE
title_full Mapeamento do uso e cobertura vegetal do município de Floresta-PE
title_fullStr Mapeamento do uso e cobertura vegetal do município de Floresta-PE
title_full_unstemmed Mapeamento do uso e cobertura vegetal do município de Floresta-PE
title_sort Mapeamento do uso e cobertura vegetal do município de Floresta-PE
author SILVA, Emanuel Araújo
author_facet SILVA, Emanuel Araújo
author_role author
dc.contributor.advisor1.fl_str_mv FERREIRA, Rinaldo Luiz Caraciolo
dc.contributor.advisor-co1.fl_str_mv SILVA, José Antônio Aleixo da
dc.contributor.advisor-co2.fl_str_mv SÁ, Iêdo Bezerra
dc.contributor.referee1.fl_str_mv MORAIS NETO, João Miguel de
dc.contributor.referee2.fl_str_mv MOURA, Geber Barbosa de Albuquerque
dc.contributor.referee3.fl_str_mv DUARTE, Simone Mirtes Araújo
dc.contributor.referee4.fl_str_mv FELICIANO, Ana Lícia Patriota
dc.contributor.authorLattes.fl_str_mv http://lattes.cnpq.br/2765651276275384
dc.contributor.author.fl_str_mv SILVA, Emanuel Araújo
contributor_str_mv FERREIRA, Rinaldo Luiz Caraciolo
SILVA, José Antônio Aleixo da
SÁ, Iêdo Bezerra
MORAIS NETO, João Miguel de
MOURA, Geber Barbosa de Albuquerque
DUARTE, Simone Mirtes Araújo
FELICIANO, Ana Lícia Patriota
dc.subject.por.fl_str_mv Sensoriamento remoto
Uso e ocupação da terra
Semiárido
Caatinga
Semiarid
topic Sensoriamento remoto
Uso e ocupação da terra
Semiárido
Caatinga
Semiarid
Remote sensing
Land use and occupation
CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL
dc.subject.eng.fl_str_mv Remote sensing
Land use and occupation
dc.subject.cnpq.fl_str_mv CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL
description The loss of diversity of forest communities by human actions has been reducing dramatically the natural areas of the Caatinga biome, thus increasing the concern to evaluate changes in usage patterns and land cover. This study aimed to mapper the dynamic of change in land use and forest cover in the last 21 years (1987-2008), municipality of Floresta, Pernambuco Outback aiming to subsidize forest management, beyond to monitor the transformation processes in which the town has experienced over the period. It had been used LANDSAT 5 satellite images for the periods May 1987, 1997 and 2008. In addition, SPRING application were utilized for preparation of base map data and digital processing of images. The images were segmented and classified by the algorithm Bhattacharya, in order to produce thematic maps in the following land uses: dense vegetation, semi-dense vegetation, bare soil, agriculture (crop / livestock), water bodies and riparian vegetation. Afterward were made reliability analysis of supervised classification by the Kappa index, which based on general performance, obtained a probability greater than 98% of classes had been mapped properly. Then was obtained maps of the years 1987, 1997 and 2008. For a period of 21 years the forest cover decreased from 42.21% of the total territory in 1987 to 27.38% in 2008. The exposed soil had a gain of 8.61%, the agricultural class has accumulated a gain of 5.75%, water bodies, over the time, showed an increase of 4.03% and the riparian forest had a tendency to fall over the study periods with a total loss of 3.57%. These data reflect the changes that the council has been going on forest land use. The decrease of forest cover in the town of Floresta-PE between 1987 and 2008 was the main consequence of the interaction of climate and human impact forest resources, urban expansion requirement and agricultural activities. The results demonstrate the potential of Remote Sensing techniques and GIS mapping of land use, for its convenience and speed, may be useful to support sustainable forest management aiming at definition of subsidies to public policy.
publishDate 2011
dc.date.issued.fl_str_mv 2011-02-18
dc.date.accessioned.fl_str_mv 2016-08-24T12:46:06Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
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dc.identifier.citation.fl_str_mv SILVA, Emanuel Araújo. Mapeamento do uso e cobertura vegetal do município de Floresta-PE. 2011.69 f. Dissertação (Programa de Pós-Graduação em Ciências Florestais) - Universidade Federal Rural de Pernambuco, Recife.
dc.identifier.uri.fl_str_mv http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5463
identifier_str_mv SILVA, Emanuel Araújo. Mapeamento do uso e cobertura vegetal do município de Floresta-PE. 2011.69 f. Dissertação (Programa de Pós-Graduação em Ciências Florestais) - Universidade Federal Rural de Pernambuco, Recife.
url http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5463
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language por
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dc.publisher.none.fl_str_mv Universidade Federal Rural de Pernambuco
dc.publisher.program.fl_str_mv Programa de Pós-Graduação em Ciências Florestais
dc.publisher.initials.fl_str_mv UFRPE
dc.publisher.country.fl_str_mv Brasil
dc.publisher.department.fl_str_mv Departamento de Ciência Florestal
publisher.none.fl_str_mv Universidade Federal Rural de Pernambuco
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