@MastersThesis{Valeriano:1992:EsCaAp,
author = "Valeriano, M{\'a}rcio de Morisson",
title = "Reflect{\^a}ncia espectral do trigo irrigado (Triticum aestivum,
L.) por espectrorradiometria de campo e aplica{\c{c}}{\~a}o do
modelo SAIL",
school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
year = "1992",
address = "Sao Jose dos Campos",
month = "1992-04-07",
keywords = "agricultura, irriga{\c{c}}{\~a}o, {\'{\i}}ndice de {\'a}rea
foliar, reflet{\^a}ncia espectral, spectrorradiometro,
an{\'a}lise espectral, trigo, emisssion spectra, irrigation, leaf
area index, IAF, spectral reflectace, spectroradiometers, spectrum
analysisi, wheat.",
abstract = "A reflect{\^a}ncia espectral de doss{\'e}is de trigo (Triticum
aestivum, L.) foi analisada em fun{\c{c}}{\~a}o de suas
vari{\'a}veis biof{\'{\i}}sicas, baseando-se em dados
experimentais e em resultados do modelo SAIL, cujo potencial na
investiga{\c{c}}{\~a}o destas rela{\c{c}}{\~o}es foi avaliado.
O modelo SAIL calcula a reflect{\^a}ncia da vegeta{\c{c}}{\~a}o
a partir de par{\^a}metros biof{\'{\i}}sicos e espectrais do
dossel e de par{\^a}metros relativos a geometria de
ilumina{\c{c}}{\~a}o/observa{\c{c}}{\~a}o. Os dados referem-se
a 7 cultivares em 14 parcelas amostrais, localizadas em Planaltina
(DF), sob manejo e irriga{\c{c}}{\~a}o uniformes. As medidas
feitas com espectrorradi{\^o}metro abrangeram regi{\~o}es do
vis{\'{\i}}vel e do infravermelho pr{\'o}ximo do espectro
eletromagn{\'e}tico (de 547 a 823nm) e foram acompanhadas de
levantamentos de dados agron{\^o}micos efetuados em 13
{\'e}pocas ao longo do ciclo de desenvolvimento (maio a setembro
de 1989). As reflect{\^a}ncias do vermelho e do infravermelho
pr{\'o}ximo mostraram-se muito relacionadas ao IAF, atrav{\'e}s
de regress{\~a}o logar{\'{\i}}tmica, principalmente antes do
IAF m{\'a}ximo. As vari{\'a}veis levantadas no experimento foram
aplicadas no modelo ap{\'o}s serem complementadas por dados da
literatura e as simula{\c{c}}{\~o}es tiveram comportamento
semelhante ao dos dados observados. Os dados espectrais dos
componentes de dossel foram considerados fundamentais como base
quantitativa para estudos sobre as rela{\c{c}}{\~o}es
espectro-agronomicas. ABSTRACT: Experimental data and results of
SAIL model supported a study relating the spectral reflectance of
wheat canopies (Triticum aestivum, L.) to their biophysical
parameters which included an evaluation of the model potential for
investigating such relationships. The SAIL model calculates the
spectral reflectance of vegetation as a function of canopy
biophysical and spectral parameters and of the
viewing/illuminating geometry. Data were taken over 7 varieties on
14 plots, placed in Planaltina (DF), under homogeneous management
and irrigation schedules. The measurements taken from
spectroradiometer in the visible to the near-infrared portion of
the electromagnetic spectrum (from 547 to 823nm) and the agronomic
data were determined together on 13 dates throughout the growing
season (from May to September, 1989). The red and the
near-infrared reflectance showed strong relationship to the leaf
area index (LAI) under logarithmic regression, mainly before LAI
reaches its maximum. The model was applied with experimental field
data complemented by data found in literature, and the model
simulations and the measured data had similar behavior. Canopy
single component spectral data were considered of great importance
as quantitative basis for studies concerning spectral-agronomic
relationships.",
committee = "Epiphanio, Jos{\'e} Carlos Neves (presidente) and Assad, Eduardo
Delgado (orientador) and Netto, Jos{\'e} da Silva Madeira and
Formaggio, Antonio Roberto",
copyholder = "SID/SCD",
englishtitle = "Field spectroradiometry and sail model application to irrigated
wheat (Triticum aestivum, L.) canopies spectral reflectance",
label = "3178",
language = "pt",
pages = "149",
ibi = "6qtX3pFwXQZ3r59YD6/GP2AD",
url = "http://urlib.net/ibi/6qtX3pFwXQZ3r59YD6/GP2AD",
targetfile = "publicacao.pdf",
urlaccessdate = "2024, May 04"
}