Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/29910
Título: Temporal variation of normalized difference vegetation index (NDVI) and calculation of the crop coefficient (KC ) from ndvi in areas cultivated with irrigated soybean
Título(s) alternativo(s): Variação temporal do Índice de Vegetação por Diferença Normalizada (NDVI) e obtenção do coeficiente de cultura (Kc ) a partir do NDVI em áreas cultivadas com soja irrigada
Palavras-chave: MOD13Q1
Phenological stages
Temporal profiles
Estádios fenológicos
Perfis temporais
Data do documento: 2016
Editor: Universidade Federal de Santa Maria
Citação: OLIVEIRA, T. C. de; FERREIRA, E.; DANTAS, A. A. A. Temporal variation of normalized difference vegetation index (NDVI) and calculation of the crop coefficient (KC ) from ndvi in areas cultivated with irrigated soybean. Ciência Rural, Santa Maria, v. 46, n. 9, p. 1683-1688, 2016.
Resumo: Vegetation indices obtained by remote sensing products have various applications in agriculture. An important application of the Normalized Difference Vegetation Index (NDVI) is obtaining the crop coefficient (Kc). The aims of this study were to analyze NDVI temporal profiles and to obtain Kc from the NDVI vegetation index product MOD13Q1. The analysis is based on the phenological stages of irrigated soybean crops in the municipality of Planura/MG during the 2010/2011 growing season. Areas planted with irrigated soybean were identified through fieldwork. Temporal series of the MOD13Q1 products were used to analyze NDVI, allowing the extraction of NDVI values for all points in the period studied. The NDVI temporal profiles showed a similar pattern to each other and corresponded to the crop cycle. The KcNDVI values for the MOD13Q1 products were well correlated to the FAO Kc values (r2=0.72). Thus, NDVI can be used as an alternative for obtaining crop coefficient (Kc).
URI: http://repositorio.ufla.br/jspui/handle/1/29910
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