@InProceedings{BreunigGalv:2015:CaEsFr,
               author = "Breunig, F{\'a}bio Marcelo and Galv{\~a}o, L{\^e}nio Soares",
          affiliation = "{} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Caracteriza{\c{c}}{\~a}o espectral de fragmentos florestais com 
                         imagens Worldview-2 em fun{\c{c}}{\~a}o da 
                         eleva{\c{c}}{\~a}o",
            booktitle = "Anais...",
                 year = "2015",
               editor = "Gherardi, Douglas Francisco Marcolino and Arag{\~a}o, Luiz 
                         Eduardo Oliveira e Cruz de",
                pages = "1121--1128",
         organization = "Simp{\'o}sio Brasileiro de Sensoriamento Remoto, 17. (SBSR)",
            publisher = "Instituto Nacional de Pesquisas Espaciais (INPE)",
              address = "S{\~a}o Jos{\'e} dos Campos",
             abstract = "Discrimination of forest species and/or canopy structure is 
                         important based on spectral reflectance. In this paper, we present 
                         a spectral reflectance characterization of some forest fragments 
                         having primary and secondary native species from inspecting a 
                         Worldview-2 8-band image acquired on July 26, 2013. We also study 
                         variations in deciduousness in the fragments with elevation data. 
                         The site is located in the Frederico Westphalen municipality, Rio 
                         Grande do Sul State, South Brazil. The Advanced Spaceborne Thermal 
                         Emission and Reflection Radiometer (ASTER) global digital 
                         elevation model (GDEM) was used. The image was atmospherically 
                         corrected using the Fast Line-of-sight Atmospheric Analysis of 
                         Hypercubes (FLAASH) code. It was masked to eliminate the 
                         non-forest areas. The average reflectance spectra of four forest 
                         fragments having different size (large, medium, small and 
                         Faguense) were obtained. To evaluate the spectral response as a 
                         function of elevation, the ASTER GDEM was sliced. To estimate the 
                         shadow, green vegetation and non-photosynthetic vegetation (NPV), 
                         the linear spectral unmixing model was applied to the Worldview-2 
                         image. The results showed two groups of spectral response. The 
                         Faguense forest presented lower reflectance in the NIR band and 
                         higher in the red one than the other fragments. This result can 
                         indicate more presence of deciduous species, as also deduced from 
                         higher NPV fraction values obtained from the linear unmixing model 
                         in the Faguense forest. This behavior seems to be related to local 
                         topographic conditions because the Faguense forest is located at 
                         lower altitudes (420-450m) than the other fragments (510-570m). 
                         Further studies based on time series and field inspection for 
                         species identification are necessary to confirm this hypothesis.",
  conference-location = "Jo{\~a}o Pessoa",
      conference-year = "25-29 abr. 2015",
                 isbn = "978-85-17-0076-8",
                label = "209",
             language = "pt",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "8JMKD3MGP6W34M/3JM47PG",
                  url = "http://urlib.net/ibi/8JMKD3MGP6W34M/3JM47PG",
           targetfile = "p0209.pdf",
                 type = "Floresta e vegeta{\c{c}}{\~a}o",
        urlaccessdate = "28 abr. 2024"
}