@Article{WatrinCrusShim:2005:AnEvCo,
               author = "Watrin, Orlando dos Santos and Crus, Carla Bernadete Madureira and 
                         Shimabukuro, Yosio Edemir",
          affiliation = "Instituto Nacional de Pesquisas Espaciais, Divis{\~a}o de 
                         Sensoriamento Remoto (INPE, DSR)",
                title = "An{\'a}lise evolutiva da cobertura vegetal e do uso da terra em 
                         projetos de assentamentos na fronteira agr{\'{\i}}cola 
                         amaz{\^o}nica, utilizando geotecnologias",
              journal = "Geografia (Rio Claro)",
                 year = "2005",
               volume = "30",
               number = "1",
                pages = "59--76",
                month = "jan.",
             keywords = "geoprocessamento, an{\'a}lise multitemporal, din{\^a}mica da 
                         paisagem, Amaz{\^o}nia Oriental, geoprocessing, multi-temporal 
                         analysis, landscape dynamics, southeastern Brazilian Amazonia.",
             abstract = "A microrregi{\~a}o do Sudeste Paraense constitui hoje uma das 
                         {\'a}reas cr{\'{\i}}ticas de desflorestamento na Amaz{\^o}nia, 
                         fruto das grandes transforma{\c{c}}{\~o}es socioecon{\^o}micas 
                         que tem atravessado. Neste trabalho {\'e} avaliada espacialmente 
                         a din{\^a}mica da cobertura vegetal e uso da terra nos Projetos 
                         de Assentamentos Agroextrativista Praialta e Piranheira, Lago Azul 
                         e S{\~a}o Francisco. Para isso, imagens TM/Landsat de 1984, 1988, 
                         1992, 1996 e 2000 foram analisadas considerando a 
                         classifica{\c{c}}{\~a}o supervisionada por regi{\~o}es de 
                         imagens fra{\c{c}}{\~a}o (vegeta{\c{c}}{\~a}o, solo e sombra), 
                         geradas a partir de modelo linear de mistura espectral. 
                         Verificou-se que a redu{\c{c}}{\~a}o das {\'a}reas de floresta 
                         prim{\'a}ria est{\'a} associada aos per{\'{\i}}odos de 
                         amplia{\c{c}}{\~a}o das atividades agropecu{\'a}rias, cuja 
                         intensidade {\'e} vari{\'a}vel com o projeto de assentamento e o 
                         per{\'{\i}}odo analisado. As pastagens representam o padr{\~a}o 
                         dominante do uso da terra, cujos incrementos em {\'a}rea chegam, 
                         por vezes, a duplicar entre anos consecutivos. Para a 
                         din{\^a}mica da paisagem, os maiores percentuais de estabilidade 
                         ocorreram principalmente para as classes Floresta Prim{\'a}ria e 
                         Capoeira Alta. As maiores taxas de convers{\~a}o entre classes 
                         ocorreram para unidades de pastagem, em especial para a classe 
                         Pasto Sujo. Os processos de antropiza{\c{c}}{\~a}o, ocorridos 
                         nas {\'a}reas de estudo, apresentaram trajet{\'o}rias distintas, 
                         fruto das particularidades do fluxo de migra{\c{c}}{\~a}o e de 
                         estrat{\'e}gias de distribui{\c{c}}{\~a}o de terras. The 
                         southeastern region of Par{\'a}, Brazil, constitutes today one of 
                         the critical areas of deforestation in Amazonian region, due to 
                         the great socioeconomic transformations that have occurred. In 
                         this context, the present work evaluates the spatial dynamics of 
                         the land cover and land use in the Agroextrativista Praialta and 
                         Piranheira, Lago Azul and S{\~a}o Francisco settlement projects. 
                         For this, Landsat/TM images from 1984, 1988, 1992, 1996, and 2000 
                         were analyzed considering the supervised classification by regions 
                         of fraction images (vegetation, soil, and shade), generated by the 
                         Linear Spectral Mixing Model. It was verified that the reduction 
                         of primary forest areas is associated with the intensification 
                         periods of agricultural and cattle raising activities, with 
                         variable intensity according to different settlement projects and 
                         the analyzed time periods. Pasture represents the dominant pattern 
                         of local land use, increasing in area, sometimes, doubling in 
                         consecutive years. For the dynamics of the landscape, the higher 
                         percentage of stability occurred for the classes Floresta 
                         Prim{\'a}ria (Primary Forest) and Capoeira Alta. Higher 
                         percentage of conversion to pasture, especially Pasto Sujo (Weedy 
                         Pasture), were observed for all the classes mapped. The 
                         antropization processes, which occurred in the study areas, have 
                         shown distinct trajectories due to the particularities of the 
                         migration flow and the strategies of land distribution.",
           copyholder = "SID/SCD",
                 issn = "0100-7912 and 1983-8700",
             language = "pt",
           targetfile = "watrin-analise.pdf",
        urlaccessdate = "12 maio 2024"
}