@Article{Valeriano:2003:ReEsCu,
               author = "Valeriano, M{\'a}rcio de Morisson",
                title = "Reflect{\^a}ncia espectral de culturas agr{\'{\i}}colas anuais 
                         (II): modelagem",
              journal = "Espa{\c{c}}o e Geografia",
                 year = "2003",
               volume = "6",
               number = "1",
                pages = "29--47",
             keywords = "AGRICULTURA, dossel, reflect{\^a}ncia espectral, {\'{\i}}ndice 
                         de {\'a}rea foliar (IAF), vegeta{\c{c}}{\~a}o, culturas 
                         agr{\'{\i}}colas, modelos, Suits, SAIL, modelagem, canopy, 
                         spectral reflectance, modeling.",
             abstract = "Apresenta-se uma revis{\~a}o do hist{\'o}rico de desenvolvimento 
                         dos modelos de reflect{\^a}ncia baseados na transfer{\^e}ncia 
                         radiativa em meios t{\'u}rbidos. S{\~a}o abordados os 
                         desdobramentos e modifica{\c{c}}{\~o}es desses modelos, desde a 
                         adapta{\c{c}}{\~a}o da teoria K-M a massa vegetais, passando 
                         {\`a}s equa{\c{c}}{\~o}es de Duntley, ao modelo AGR e, enfim, 
                         aos conhecidos modelos Suits e depois SAIL. Os modelos Suits e 
                         SAIL, consagrados em experimentos, calculam a reflect{\^a}ncia da 
                         vegeta{\c{c}}{\~a}o a partir de vari{\'a}veis 
                         biof{\'{\i}}sicas e espectrais do dossel e de par{\^a}metros 
                         relativos {\`a} geometria de 
                         ilumina{\c{c}}{\~a}o/observa{\c{c}}{\~a}o. A 
                         descri{\c{c}}{\~a}o dos doss{\'e}is vegetais {\'e} feita 
                         atrav{\'e}s dos {\'{\i}}ndices de {\'a}rea de seus 
                         componentes, sobretudo {\'a}rea foliar, juntamente com a 
                         arquitetura da planta. Os dados espectrais dos componentes de 
                         dossel foram considerados fundamentais como base quantitativa para 
                         estudos sobre as rela{\c{c}}{\~o}es espectro-agron{\^o}micas. 
                         ABSTRACT: A brief review on the development of the reflectance 
                         models based on radiative transfer in turbid medium is presented. 
                         The variants and modifications of these models are concerned, from 
                         the application of the K-M theory, the Duntley equations, the AGR 
                         model, to the well known Suits and SAIL models. Suits and SAIL 
                         models, tested in field trials, calculate the spectral reflectance 
                         of vegetation as a function of canopy biophysical and spectral 
                         parameters and of the viewing/illuminating geometry. The canopies 
                         are described through the area index of their components, mainly 
                         leaf area, with the plant architecture. Canopy single component 
                         spectral data were considered of great importance as quantitative 
                         basis for studies concerning spectral-agronomic relationships.",
           copyholder = "SID/SCD",
                 issn = "1516-9375",
                label = "self-archiving-INPE-MCTIC-GOV-BR",
             language = "pt",
           targetfile = "reflectancia espectral (II).pdf",
        urlaccessdate = "2024, May 03"
}