@InProceedings{JungesPintFont:2013:VaInPe,
               author = "Junges, Amanda Heemann and Pinto, Daniele Guterres and Fontana, 
                         Denise Cybis",
                title = "Variabilidade interanual dos perfis temporais de NDVI/MODIS de 
                         {\'a}reas agr{\'{\i}}colas cultivadas com cereais de 
                         esta{\c{c}}{\~a}o fria para produ{\c{c}}{\~a}o de gr{\~a}os 
                         no Rio Grande do Sul",
            booktitle = "Anais...",
                 year = "2013",
               editor = "Epiphanio, Jos{\'e} Carlos Neves and Galv{\~a}o, L{\^e}nio 
                         Soares",
                pages = "23--30",
         organization = "Simp{\'o}sio Brasileiro de Sensoriamento Remoto, 16. (SBSR)",
            publisher = "Instituto Nacional de Pesquisas Espaciais (INPE)",
              address = "S{\~a}o Jos{\'e} dos Campos",
             abstract = "This study aimed to analyze the temporal NDVI/MODIS profiles 
                         variability in winter cereals cropping areas to establish 
                         relationship with wheat yield in Rio Grande do Sul State, Brazil. 
                         The data set comprised 17 NDVI/MODIS images, from April to 
                         December of the 2000-2008 series. Firstly, crop masks were 
                         elaborated by subtracting the minimum NDVI image (April to May) 
                         from the maximum NDVI image (June to October). Then, an 
                         unsupervised classification of NDVI/MODIS images was carried out, 
                         considering the crop masking areas. The class that temporal 
                         NDVI/MODIS profiles were in agree with crop calendar was named as 
                         winter cereals to grain production and the interannual variability 
                         was analized. The results showed that NDVI values were low (0,40) 
                         early in the crop cycle and increased up to August, September and 
                         first fortnight of October, according to the region. Maximum NDVI 
                         value and major interannual variability occurred in period before 
                         the flowering stage. It was possible to indicated difference 
                         between temporal NDVI/MODIS profiles in years of low and high 
                         wheat yield. The maximum yield in the series was associated with 
                         temporal NDVI/MODIS profile with more plant biomass 
                         accumulation.",
  conference-location = "Foz do Igua{\c{c}}u",
      conference-year = "13-18 abr. 2013",
                 isbn = "{978-85-17-00066-9 (Internet)} and {978-85-17-00065-2 (DVD)}",
                label = "1286",
             language = "pt",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "3ERPFQRTRW34M/3E7GKA9",
                  url = "http://urlib.net/ibi/3ERPFQRTRW34M/3E7GKA9",
           targetfile = "p1286.pdf",
                 type = "Agricultura",
        urlaccessdate = "23 maio 2024"
}