BURN SEVERITY IN THE PANTANAL BIOME USING THE DIFFERENCE NORMALIZED BURN RATIO INDEX (∆NBR)

Pantanal biome has suffering of several fire foci all over its area, reaching four million hectares of native vegetation burned. In view of measuring this severity, we classified the burned areas with the difference Normalized Burn Ratio (∆NBR) index over this biome, in Brazil. The ∆NBR were carried out through Google Earth Engine, in a temporal reach from 2001 to 2021, using MODIS imagery. Afterwards data acquisiton and index calculation, were applied Man-Kendall test, followed by Pettitt test and Principal Component Analysis (PCA) as statistical approach. Based on this approach, the tendency, change and potential point of change were identified, in view of describing the year with highest burn severity. Our results suggests that no sudden variation over the considered years, implying no described trend. From PCA, were discriminated the expected clustering of variables, suggesting no further tendency for ∆NBR.