Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/940360
Unidade da Embrapa/Coleção:: Embrapa Monitoramento por Satélite - Artigo em periódico indexado (ALICE)
Data do documento: 23-Nov-2012
Tipo do Material: Artigo em periódico indexado (ALICE)
Autoria: VICTORIA, D. de C.
PAZ, A. R. DA
COUTINHO, A. C.
KASTENS, J.
BROWN, J. C.
Informaçães Adicionais: DANIEL DE CASTRO VICTORIA, CNPM; ADRIANO ROLIM DA PAZ, UNIVERSIDADE FEDERAL DA PARAÍBA; ALEXANDRE CAMARGO COUTINHO, CNPTIA; JUDE KASTENS, KANSAS APPLIED REMOTE SENSING; J. CHRISTOPHER BROWN, UNIVERSITY OF KANSAS.
Título: Cropland area estimates using Modis NDVI time series in the state of Mato Grosso, Brazil.
Edição: 2012
Fonte/Imprenta: Pesquisa Agropecuária Brasileira, Brasilia, DF, v. 47, n. 9, p. 1270-1278, set. 2012.
Idioma: en
Palavras-chave: Cropland masks
Cultivated area
Fourier.
Conteúdo: The objective of this work was to evaluate a simple, semi‑automated methodology for mapping cropland areas in the state of Mato Grosso, Brazil. A Fourier transform was applied over a time series of vegetation index products from the moderate resolution imaging spectroradiometer (Modis) sensor. This procedure allows for the evaluation of the amplitude of the periodic changes in vegetation response through time and the identification of areas with strong seasonal variation related to crop production. Annual cropland masks from 2006 to 2009 were generated and municipal cropland areas were estimated through remote sensing. We observed good agreement with official statistics on planted area, especially for municipalities with more than 10% of cropland cover (R2 = 0.89), but poor agreement in municipalities with less than 5% crop cover (R2 = 0.41). The assessed methodology can be used for annual cropland mapping over large production areas in Brazil.
NAL Thesaurus: Vegetation index.
Ano de Publicação: 2012
Aparece nas coleções:Artigo em periódico indexado (CNPM)

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