@InProceedings{MoreiraAdamBarrRudo:2009:EmImTM,
               author = "Moreira, Mauricio Alves and Adami, Marcos and Barros, Marco 
                         Aur{\'e}lio and Rudorff, Bernardo Friedrich Theodor",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais} and {Instituto 
                         Nacional de Pesquisas Espaciais} and {Instituto Nacional de 
                         Pesquisas Espaciais} and {Instituto Nacional de Pesquisas 
                         Espaciais}",
                title = "Emprego de imagens do TM/Landsat-5 e da abordagem de 
                         classifica{\c{c}}{\~a}o h{\'{\i}}brida para mapear {\'a}reas 
                         de citros no estado de S{\~a}o Paulo",
            booktitle = "Anais...",
                 year = "2009",
               editor = "Epiphanio, Jos{\'e} Carlos Neves and Galv{\~a}o, L{\^e}nio 
                         Soares",
                pages = "309--316",
         organization = "Simp{\'o}sio Brasileiro de Sensoriamento Remoto, 14. (SBSR)",
            publisher = "Instituto Nacional de Pesquisas Espaciais (INPE)",
              address = "S{\~a}o Jos{\'e} dos Campos",
             keywords = "Citrus crop, Remote Sensing, mapped area.",
             abstract = "Brazil is the world´s largest citrus producer with more than 800 
                         thousand hectares of cultivated area generating around 400 
                         thousands jobs. According to the Brazilian official statistics 
                         S{\~a}o Paulo State has more than 650 thousand hectares of 
                         cultivated citrus area. However, this statistic is based on 
                         traditional and subjective methods. Therefore, the present work 
                         has the objective to propose an alternative method based on medium 
                         spatial resolution remote sensing imagery interpretation and on 
                         Geographic Information System (GIS) technologies to provide an 
                         objective and reliable agricultural statistic on cultivated citrus 
                         area in S{\~a}o Paulo State for the crop year of 2007. 
                         Multitemporal images from the TM sensor onboard of Landsat-5 
                         satellite were digitally processed and visually interpreted on the 
                         computer screen using the Spring software which is a GIS with 
                         images processing capabilities. The resultant thematic map 
                         provided the spatial distribution of cultivated citrus and allowed 
                         calculating the cultivated area at local and regional levels. It 
                         was not possible to distinguish among different citrus types. 
                         Further studies need to be performed to evaluate the mapping 
                         accuracy and the precision of the agricultural statistic on 
                         cultivated citrus. Compared to the official statistic the present 
                         result was underestimated by 11.3% which might be partially 
                         related to the sugarcane expansion on citrus plantations and due 
                         to the fact that newly planted citrus areas are difficult to be 
                         identified on remote sensing images.",
  conference-location = "Natal",
      conference-year = "25-30 abr. 2009",
                 isbn = "978-85-17-00044-7",
             language = "pt",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "dpi.inpe.br/sbsr@80/2008/11.17.18.40.16",
                  url = "http://urlib.net/ibi/dpi.inpe.br/sbsr@80/2008/11.17.18.40.16",
           targetfile = "309-316.pdf",
                 type = "Agricultura",
        urlaccessdate = "15 jun. 2024"
}