%0 Conference Proceedings
%4 sid.inpe.br/marte2/2017/10.23.16.57.43
%2 sid.inpe.br/marte2/2017/10.23.16.57.44
%@isbn 978-85-17-00088-1
%F 59608
%T Avaliação da atividade fotoquímica de diferentes tipos de cobertura vegetal a partir do Índice de Refletância Fotoquímica
%D 2017
%A Souza, José Carlos,
%A Sousa, Jocy Ana Paixão de,
%A Lopes, Elfany Reis do Nascimento,
%A Padovanni, Naia Godoy,
%A Morais, Maria Cintia Matias,
%A Sales, Jomil Costa,
%A Lourenço, Roberto Wagner,
%@electronicmailaddress jcsouza1974@gmail.com
%E Gherardi, Douglas Francisco Marcolino,
%E Aragão, Luiz Eduardo Oliveira e Cruz de,
%B Simpósio Brasileiro de Sensoriamento Remoto, 18 (SBSR)
%C Santos
%8 28-31 maio 2017
%I Instituto Nacional de Pesquisas Espaciais (INPE)
%J São José dos Campos
%P 211-217
%S Anais
%1 Instituto Nacional de Pesquisas Espaciais (INPE)
%X The Photochemistry Reflectance Index is an extremely important remote sensing product in evaluating the spectral behavior of vegetation, with the potential to evaluate the phytosanitary conditions of vegetation. Calculated from the relation between the spectral bands of green and blue and is an indicator of the use efficiency of photosynthetic radiation in the production process of photosynthesis. The PRI applies to the estimation of the photochemical activity of different phytophysiognomies of natural vegetation cover and different land uses in relation of agricultural production. In this study, using images from RapidEyes satellite, aimed to evaluate the photosynthetic activity of forest areas, grasslands, reforestation and short amount agriculture by the Photochemical Reflectance Index (PRI). The study was applied in the hydrografic basin of the Una river in Ibiuna, State of Sao Paulo. The results indicated photochemical production conditions very similar among the evaluated classes (forests, passage, agriculture and reforestation). However, the results of descriptive statistic and histograms, indicated the forests with the best conditions in photochemical reflectance (average - 0.51; standard deviation - 0.01; coefficient of variation - 1.96) and the agriculture showed the lowest production of photochemical reflectance ( average 0.48; standard deviation 0.02; coefficient of variation 4.16).
%9 Processamento de imagens
%@language pt
%3 59608.pdf