Use of the Normalized Difference Vegetation Index (NDVI) to Analyze the Distribution and Vigor of Vegetation in the Northern Pantanal
DOI:
https://doi.org/10.5433/2447-1747.2020v29n1p175Keywords:
Orbital images, Geotechnologies, Wetland.Abstract
Considering the complexity of macrohabitats in the Pantanal and their relationship with hydrological variations, the study aimed to compare the phytophysiognomy variation and the temporal behavior of the Normalized Difference Vegetation Index (NDVI) considering the flood pulse of the Northern Pantanal (15º42’27”/16º48’52”S and 55º2’2”/56º0’17”W). We used SIG Arcgis 10.2.2 and MODIS images (MOD13Q) for mapping of leaf mass variation (2010 to 2012). For the total area (7,553.28 square kilometers) there was an increase of twice the high vigor vegetation from the dry to the rainy season. The highest values recorded for NDVI in flood and high waters corroborate the statement that the flood correlates with the increase in vegetation vigor, which becomes denser in the Forested Savannah (43%) and the Semideciduous Seasonal Alluvial Forest (35%) and smaller in the Grassy-Woody Savannah and Park (22%). In the low waters, the vegetation decreases its leaf mass and the Grassy-Woody Savannah and Park Savannah classes occupy a wide area of the plain (81%), in contrast to Forested Savannah (13%) and Semideciduous Seasonal Alluvial Forest (7%) show a reduction in leaf cover. The NDVI were efficient in the analysis and interpretation of leaf variation in a region where the flood creates diversified vegetation landscapes.Downloads
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