@InProceedings{BreunigGalvForm:2011:CaEsTe,
               author = "Breunig, F{\'a}bio Marcelo and Galv{\~a}o, L{\^e}nio Soares and 
                         Formaggio, Antonio Roberto",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais - INPE} and {Instituto 
                         Nacional de Pesquisas Espaciais - INPE} and {Instituto Nacional de 
                         Pesquisas Espaciais - INPE}",
                title = "Caracteriza{\c{c}}{\~a}o espectral e temporal da 
                         vegeta{\c{c}}{\~a}o nativa do Parque Estadual do Turvo e da 
                         Terra Ind{\'{\i}}gena do Guarita – RS, com produtos MODIS",
            booktitle = "Anais...",
                 year = "2011",
               editor = "Epiphanio, Jos{\'e} Carlos Neves and Galv{\~a}o, L{\^e}nio 
                         Soares",
                pages = "1765--1772",
         organization = "Simp{\'o}sio Brasileiro de Sensoriamento Remoto, 15. (SBSR).",
            publisher = "Instituto Nacional de Pesquisas Espaciais (INPE)",
              address = "S{\~a}o Jos{\'e} dos Campos",
             keywords = "remote sensing, vegetation indices, reflectance, sensoriamento 
                         remoto, {\'{\i}}ndices de vegeta{\c{c}}{\~a}o, 
                         reflect{\^a}ncia.",
             abstract = "We use the Moderate Resolution Imaging Spectroradiometer (MODIS) 
                         to characterize both the spectral and temporal variations in 
                         reflectance and in vegetation indices of the Mixed Ombrophilous 
                         and Deciduous Seasonal Forests from the Parque Estadual do Turvo 
                         (PE Turvo) and Terra Ind{\'{\i}}gena do Guarita (TI Guarita). 
                         The two study areas are located in northwest of Rio Grande do Sul 
                         state, Brazil. The Normalized Difference Vegetation Index (NDVI) 
                         and Enhanced Vegetation Index (EVI) were studied. A total of 241 
                         MODIS 16-days composite images were used. Scatter plots between 
                         the reflectance of the red and near infrared (NIR) bands, the NDVI 
                         and the EVI were generated. Correlations for both forest areas 
                         were computed and the magnitude of the relationships was 
                         evaluated. To identify specific temporal features, Morlet-6 
                         wavelet transformation was used. Results showed that PE Turvo 
                         always presented a lower reflectance in the red and a higher in 
                         the NIR than TI Guarita. The NDVI presented lower values for PE 
                         Turvo due to the higher influence of red band reflectance on this 
                         index when compared to EVI. In general, EVI was less sensitive to 
                         the presence of bare soil in TI Guarita than NDVI. Finally, 
                         wavelet analysis allowed identifying two periods where NDVI and 
                         EVI spectra gave indications of physiological changes in 
                         vegetation, which were coincident with lower precipitation. These 
                         results are not conclusive and more studies are necessary in order 
                         to improve the knowledge about those sub-tropical forests.",
  conference-location = "Curitiba",
      conference-year = "30 abr. - 5 maio 2011",
                 isbn = "{978-85-17-00056-0 (Internet)} and {978-85-17-00057-7 (DVD)}",
             language = "pt",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "3ERPFQRTRW/3A45QL2",
                  url = "http://urlib.net/ibi/3ERPFQRTRW/3A45QL2",
           targetfile = "p0272.pdf",
                 type = "An{\'a}lise Florestal e Vegeta{\c{c}}{\~a}o",
        urlaccessdate = "16 jun. 2024"
}