@InProceedings{GuerraSchuSanc:2017:MaAuEx,
               author = "Guerra, J{\'u}lio Bandeira and Schultz, Bruno and Sanches, Ieda 
                         Del Arco",
          affiliation = "{} and {} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Mapeamento autom{\'a}tico da expans{\~a}o da agricultura anual 
                         no MATOPIBA entre 2002 e 2015 utilizando a plataforma Google Earth 
                         Engine",
            booktitle = "Anais...",
                 year = "2017",
               editor = "Gherardi, Douglas Francisco Marcolino and Arag{\~a}o, Luiz 
                         Eduardo Oliveira e Cruz de",
                pages = "6850--6857",
         organization = "Simp{\'o}sio Brasileiro de Sensoriamento Remoto, 18. (SBSR)",
            publisher = "Instituto Nacional de Pesquisas Espaciais (INPE)",
              address = "S{\~a}o Jos{\'e} dos Campos",
             abstract = "Over the past four decades, the Cerrado (Brazilian Savanna) has 
                         suffered a land use cover change process that transformed sparsely 
                         populated areas in major agricultural production centers. The 
                         region known as MATOPIBA, which is formed by the Brazilian state 
                         of Tocantins and some parts of the states of Maranh{\~a}o, 
                         Piau{\'{\i}} and Bahia, has 91% of its area in the biome 
                         Cerrado. It current represents the latest agricultural frontier in 
                         Brazil, an area of agriculture expansion and intensification, 
                         mainly focused in grains production. The agricultural activity has 
                         expanded quickly in MATOPIBA, but 72% of this native vegetation is 
                         still preserved. Because of the economic and environmental 
                         importance of this region, it is essential to monitor its 
                         agricultural areas. In this context, the main goal of this paper 
                         was to map the expansion of annual crops in MATOPIBA region, 
                         between July 2002 and June 2015 (thirteen crop years). A 
                         methodology based on NDVI/MODIS time series analysis and decision 
                         tree classifier was applied in order to map crop areas using the 
                         Google Earth Engine. The results shown the dynamics of crop areas 
                         in MATOPIBA and highlighted the rapid process of expansion between 
                         2002 and 2015, reaching an expansion rate of 130% in this period. 
                         Using Google Earth Engine cloud computing platform it took about 
                         two hours to perform automatic crop mapping of thirteen crop years 
                         by the complete processing (gap filling, filtering/smoothing, 
                         feature extraction and classification) of 1196 NDVI/MODIS-250m 
                         images (tiles) covering the Cerrado portion of MATOPIBA region, 
                         which extends over 665.000 km2.",
  conference-location = "Santos",
      conference-year = "28-31 maio 2017",
                 isbn = "978-85-17-00088-1",
                label = "59359",
             language = "pt",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "8JMKD3MGP6W34M/3PSMDLL",
                  url = "http://urlib.net/ibi/8JMKD3MGP6W34M/3PSMDLL",
           targetfile = "59359.pdf",
                 type = "Monitoramento agr{\'{\i}}cola",
        urlaccessdate = "27 abr. 2024"
}