Variação do Índice de Vegetação por Diferença Normalizada na lagoa Itapeva, litoral norte do Rio Grande do Sul, Brasil, a partir de análise de séries temporais / Variations of the Normalized Difference Vegetation Index (NDVI) in the Itapeva-RS Lake, north coast of Rio Grande do Sul, Brazil, from Temporal Series Analysis

Variação do Índice de Vegetação por Diferença Normalizada na lagoa Itapeva, litoral norte do Rio Grande do Sul, Brasil, a partir de análise de séries temporais / Variations of the Normalized Difference Vegetation Index (NDVI) in the Itapeva-RS Lake, north coast of Rio Grande do Sul, Brazil, from Temporal Series Analysis

The objective of this study was to analyze the pattern spatial-temporal values of the Normalized DifferenceVegetation Index (NDVI) in Itapeva-RS lake, using Landsat TM5 and ETM + 7 images, from1985 through 2010. For the analysis of space-temporal behavior classes was used Normalized DifferenceVegeta...

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Bibliographic Details
Format: Article
Language:English
Published: Editora da Universidade Federal de Uberlândia 2013-10-01
Series:Sociedade & Natureza
Subjects:
NDVI
Time Series Analysis
Itapeva Lake.
Online Access:http://www.seer.ufu.br/index.php/sociedadenatureza/article/view/13777/pdf
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Summary:The objective of this study was to analyze the pattern spatial-temporal values of the Normalized DifferenceVegetation Index (NDVI) in Itapeva-RS lake, using Landsat TM5 and ETM + 7 images, from1985 through 2010. For the analysis of space-temporal behavior classes was used Normalized DifferenceVegetation Index (NDVI) classes and Temporal Series Analysis (TSA). To validate the observed patternswere collected water samples from six points in the Itapeva Lake for clorofila_a, Total suspendedsolids and Secchi disk transparency. These results were correlated with NDVI values. The NDVI classesmaps generated after analysis of TSA, showed dynamic patterns of seasonal and spatial associated withenvironmental variables that were actuating, allowing the establishment of three distinctive surfaces inItapeva Lake: north, center and south. The Temporal Series Analysis of images shows that the increaseand decrease of NDVI values are associated with periods of phytoplankton bloom. One concluded thatthe Temporal Series Analysis of Landsat images was satisfactory with regard to the behavior of spatialand temporal variation of NDVI classes.
ISSN:0103-1570
1982-4513

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