@InProceedings{OliveiraFéNoGaGrRoMa:2017:AcDAMo,
author = "Oliveira, Julianne de Castro and F{\'e}ret, Jean-Baptiste and
Nouvellon, Yann and Gastellu-Etchegorry, Jean-Philippe and Grau,
Eloi and Rodriguez, Luiz Carlos Estraviz and Maire, Guerric le",
title = "Accuracy of the DART model to simulate very high spatial
resolution satellite images on different genotypes of Eucalyptus
stands",
booktitle = "Anais...",
year = "2017",
editor = "Gherardi, Douglas Francisco Marcolino and Arag{\~a}o, Luiz
Eduardo Oliveira e Cruz de",
pages = "4651--4658",
organization = "Simp{\'o}sio Brasileiro de Sensoriamento Remoto, 18. (SBSR)",
publisher = "Instituto Nacional de Pesquisas Espaciais (INPE)",
address = "S{\~a}o Jos{\'e} dos Campos",
abstract = "Fast-growing Eucalyptus plantations cover about 5.6 million ha in
Brazil, and are among the most productive forest plantations in
the world. Various Eucalyptus genotypes is cultivated, having
distinct biophysical and biochemical characteristics. The use of
remote sensing images to estimate Eucalyptus stand characteristics
is challenging, due to the lack of knowledge on how they influence
the reflectance signal. This study uses the DART radiative
transfer model to evaluate the effects of forest parameters on
their reflectance behavior. The first step was to test the model
reliability for the simulation of reflectance images corresponding
to Eucalyptus forests. We parameterized DART to simulate
reflectance images in four bands (blue, green, red and NIR), using
extensive measurements from plantations with 54 months old in
Itatinga (SP), Brazil. A trial including 16 contrasted genotypes
was planted in 10 blocks. Inventories were conducted and leaves,
trunk and litter optical properties were measured. Simulations
accuracy was evaluated by comparing the mean top of canopy (TOC)
reflectance of DART with TOC extracted from a Pleiades satellite
image. Results showed a good performance of DART with mean
reflectance absolute error lower than 2 % for all bands. The
second step consisted in a sensitivity analysis to explore which
stand parameters influence more canopy reflectance; LAI, leaf
reflectance, trees dimensions and row azimuth were most sensitive
parameters. These results open perspectives on the use of DART in
inversion mode to extract parameters over spatio-temporal
scales.",
conference-location = "Santos",
conference-year = "28-31 maio 2017",
isbn = "978-85-17-00088-1",
label = "59309",
language = "en",
organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
ibi = "8JMKD3MGP6W34M/3PSM3FJ",
url = "http://urlib.net/ibi/8JMKD3MGP6W34M/3PSM3FJ",
targetfile = "59309.pdf",
type = "Floresta e outros tipos de vegeta{\c{c}}{\~a}o",
urlaccessdate = "27 abr. 2024"
}