Fechar
Metadados

@MastersThesis{Silva:2018:TrFlDi,
               author = "Silva, Alindomar Lacerda",
                title = "Transi{\c{c}}{\~a}o florestal e din{\^a}mica de uso e cobertura 
                         da terra no centro-sul paulista",
               school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                 year = "2018",
              address = "S{\~a}o Jos{\'e} dos Campos",
                month = "2018-04-18",
             keywords = "uso e cobertura da terra, mudan{\c{c}}as de uso e cobertura da 
                         terra (MUCT), transi{\c{c}}{\~a}o florestal, m{\'e}tricas de 
                         paisagem, regenera{\c{c}}{\~a}o, reflorestamento, land use and 
                         land cove change (LUCC), transi{\c{c}}{\~a}o florestal, forest 
                         transition, landscape metrics, regeneration, reforestation.",
             abstract = "Mudan{\c{c}}as de uso e cobertura da terra s{\~a}o processos 
                         complexos, dos quais a perda e eventual recupera{\c{c}}{\~a}o da 
                         cobertura florestal s{\~a}o dois elementos de reconhecida 
                         import{\^a}ncia. O Sensoriamento Remoto, neste sentido, se 
                         caracteriza como importante ferramenta para investigar processos 
                         como esses, e quando combinado com estat{\'{\i}}sticas 
                         demogr{\'a}ficas e agr{\'{\i}}colas tem sido utilizado para 
                         examinar associa{\c{c}}{\~o}es entre a varia{\c{c}}{\~a}o da 
                         cobertura florestal e outros processos. A teoria de 
                         transi{\c{c}}{\~a}o florestal tem por objeto essas 
                         varia{\c{c}}{\~o}es quando ocorrem aumentos da cobertura 
                         florestal em regi{\~o}es que passaram por processos de 
                         desflorestamento persistentes. O bioma Mata Atl{\^a}ntica, que 
                         foi submetido {\`a} convers{\~a}o de florestas para a 
                         agricultura resultando na perda da quase totalidade de sua 
                         cobertura florestal original, atualmente apresenta 
                         ind{\'{\i}}cios de recupera{\c{c}}{\~a}o florestal em algumas 
                         {\'a}reas. Nesse contexto, os objetivos deste estudo foram (1) 
                         examinar a hip{\'o}tese de transi{\c{c}}{\~a}o florestal em uma 
                         {\'a}rea da regi{\~a}o centro-sul do estado de S{\~a}o Paulo, 
                         em que {\'e} observada uma expressiva expans{\~a}o de 
                         cana-de-a{\c{c}}{\'u}car e silvicultura; e (2) investigar a 
                         associa{\c{c}}{\~a}o das mudan{\c{c}}as de uso e cobertura da 
                         terra na regi{\~a}o e transforma{\c{c}}{\~o}es de larga escala 
                         da paisagem com base na combina{\c{c}}{\~a}o de imagens de 
                         sat{\'e}lites, dados censit{\'a}rios e m{\'e}tricas de 
                         paisagem. Foram utilizadas 21 imagens dos sat{\'e}lites Landsat 
                         entre 1973 e 2017 e desenvolvida uma metodologia para identificar 
                         e quantificar perdas e ganhos de {\'a}reas de fisionomia 
                         florestal, discriminando-se tamb{\'e}m fragmentos remanescentes, 
                         de florestas secund{\'a}rias (regenera{\c{c}}{\~a}o) e 
                         plantadas comerciais (silvicultura ou reflorestamento) e 
                         calculando-se m{\'e}tricas de paisagem para fragmentos de 
                         florestas remanescentes e secund{\'a}rias. Dados dos censos 
                         agr{\'{\i}}colas de 1995 e 2006 foram analisados para 
                         identificar os principais usos agr{\'{\i}}colas e investigar 
                         mudan{\c{c}}as em {\'a}reas de pastagens, 
                         cana-de-a{\c{c}}{\'u}car, produtos da silvicultura e culturas 
                         permanentes. os resultados do trabalho revelaram que a cobertura 
                         florestal total (incluindo as florestas remanescentes, as 
                         florestas secund{\'a}rias e as florestas plantadas) correspondeu 
                         a 19.9% da {\'a}rea de estudo no per{\'{\i}}odo de 1995-2005 
                         (per{\'{\i}}odo I) e 23.6% em 2006-2013 (per{\'{\i}}odo II); a 
                         s{\'e}rie temporal de imagens cobrindo o per{\'{\i}}odo de 1973 
                         a 2017 foi utilizada para elucidar d{\'u}vidas na 
                         discrimina{\c{c}}{\~a}o das {\'a}reas de floresta. As florestas 
                         plantadas contribu{\'{\i}}ram com a maior parte dos ganhos de 
                         cobertura florestal, com aumento de 180% entre 1995 e 2013, 
                         alcan{\c{c}}ando 195.300 ha ou 7.8% da {\'a}rea de estudo em 
                         2013. A an{\'a}lise da distribui{\c{c}}{\~a}o espacial dos 
                         fragmentos revelou que cerca de metade dos fragmentos 
                         remanescentes e de regenera{\c{c}}{\~a}o eram observados a menos 
                         de 50 m dos corpos d{\'a}gua, sugerindo que a 
                         preserva{\c{c}}{\~a}o e recupera{\c{c}}{\~a}o das matas de 
                         galeria pode melhorar a conectividade entre fragmentos. A 
                         an{\'a}lise dos censos mostrou que a {\'a}rea de 
                         cana-de-a{\c{c}}{\'u}car cresceu em 26,5% nos 
                         munic{\'{\i}}pios da {\'a}rea de estudo e sua 
                         produ{\c{c}}{\~a}o (quantidade de toneladas mo{\'{\i}}das) 
                         29%, enquanto a de pastagens diminu{\'{\i}}u em 23% e a de 
                         culturas permanentes, como laranja, tangerina e lima, em 32,4%. A 
                         xii combina{\c{c}}{\~a}o de dados de sensoriamento remoto e de 
                         Censos mostrou que as transforma{\c{c}}{\~o}es da paisagem 
                         apresentaram um padr{\~a}o de expans{\~a}o da silvicultura na 
                         por{\c{c}}{\~a}o sul e centro sul da {\'a}rea de estudo, 
                         principalmente nos munic{\'{\i}}pios de Pardinho, Paranapanema e 
                         S{\~a}o Miguel Arcanjo, onde se concentrou o crescimento de 
                         {\'a}reas de cobertura florestal, e um padr{\~a}o de 
                         expans{\~a}o de {\'a}reas de cana de a{\c{c}}{\'u}car no norte 
                         e centro-norte da {\'a}rea de estudo, onde processos de 
                         regenera{\c{c}}{\~a}o e reflorestamento foram marginais. 
                         ABSTRACT: Land use and land cover changes are complex processes, 
                         among which loss and recovery of forest cover represent two 
                         aspects of recognized importance. Remote Sensing, in this sense, 
                         remote sensing make up an important set of tool to investigate 
                         such changes, which, in combination with demographic and 
                         agricultural statistics has been used to examine associations 
                         between forest cover variation and other processes. The Forest 
                         Transition Theory has as its object such variations in the case of 
                         net increases in Forest cover in regions of previously persistent 
                         deforestation. The Brazilian Atlantic Forest biome, which has been 
                         subjected to continuous forest conversion to agriculture resulting 
                         in the loss of nearly all of its original forest cover, is 
                         presently showing evidence of forest recovery in some areas. In 
                         this context, the objectives of this study were (1) to examine the 
                         hypothesis of forest transition in an area in south-central 
                         S{\~a}o Paulo State, where significant expansion of sugarcane and 
                         also silviculture has been observed; and (2) to investigate the 
                         association of changes in land use and land cover in the region 
                         and large scale landscape transformations based on the combination 
                         of satellite images, census data and landscape metrics. A series 
                         of 21 Landsat images from 1973 to 2017 were used and a methodology 
                         was developed to identify and quantify areas presenting forest 
                         physiognomy, and to differentiate Atlantic Forest (AF) remnants, 
                         fragments of secondary forests (regeneration), and commercial 
                         forest plantations (silviculture). In addition, landscape metrics 
                         for fragments of remaining and secondary forests were calculated. 
                         Data from the 1995 and 2006 agricultural censuses were analyzed to 
                         single out main agricultural uses and investigate changes in 
                         pasture, sugarcane, forestry products and permanent crops. Results 
                         show that total forest cover accounted for 19.9% of the study area 
                         in 1995-2005 (period I) and 23.6% in 2006-2013 (period II), 
                         including AF remnants, forest regeneration and commercial forest 
                         plantations; the image time-series from 1973 to 2017 was used to 
                         elucidate doubts in the discrimination of forest areas. Commercial 
                         forest plantations contributed to the greatest share of forest 
                         cover gains, with a 180% increase between 1995 and 2013, reaching 
                         195,300 ha or 7.8% of the study area in 2013. The analysis of 
                         forest fragments spatial distribution revealed that about half of 
                         remnant and regeneration fragments occurred within 50 m of the 
                         water bodies, suggesting that the preservation and recovery of 
                         riparian vegetation can improve connectivity among fragments. 
                         Analysis of Census data showed that sugarcane areas grew by 26.5% 
                         in the municipalities of the study area and total sugarcane 
                         production increased by 29%, while pasture areas decreased by 23% 
                         and permanent crops, such as orange, mandarin and lime, by 32.4%. 
                         The combination of remotely sensing and census data showed that 
                         the landscape transformations presented a pattern of silviculture 
                         expansion in the south and southwestern portions of the study 
                         area, mainly in the xiv municipalities of Pardinho, Paranapanema 
                         and S{\~a}o Miguel Arcanjo, and a pattern of sugarcane expansion 
                         in the north and northeast portion of the study area, where 
                         processes of regeneration and reforestation were marginal.",
            committee = "Sanches, Ieda Del'Arco (presidente) and Alves, Di{\'o}genes Salas 
                         (orientador) and Ferreira, Matheus Pinheiro (orientador) and 
                         K{\"o}rting, Thales Sehn and Silva, Ramon Felipe Bicudo da",
         englishtitle = "Forest transition and land use/cover dynamics in south-central 
                         S{\~a}o Paulo",
             language = "pt",
                pages = "122",
                  ibi = "8JMKD3MGP3W34R/3QNAT3P",
                  url = "http://urlib.net/rep/8JMKD3MGP3W34R/3QNAT3P",
           targetfile = "publicacao.pdf",
        urlaccessdate = "01 dez. 2020"
}


Fechar