The principal applications for vegetation assess of the Landsat 7 ETM+ are: band 2 is designed to measure green reflectance peak of vegetation for vegetation discrimination and vigor assessment; band 3 designed to sense in a chlorophyll absorption region aiding in plant species differentiation; band 4 useful for determine vegetation types, vigor, and biomass content; band 5 indicative of vegetation moisture; band 6 useful in vegetation stress analysis and band 7 also sensitive to vegetation moisture content