At Figure 2 one observes that, in a general sense, the classes
Primary Forest, Logged Forest, Degraded Forest, Bamboo
formations, Secondary Forest, Pasture and Overgrown Pasture
present a typical spectral behavior of vegetation, i.e. a low
reflectance at bands 1 and 2, corresponding to the visible
spectrum (VIS), high reflectance at band 3 (near infrared), and
again a low reflectance at bands 4 to 9, corresponding to middle
infrared, specially due to presence of water inside the leaves.
The classes Overgrown Pasture and Pasture have a slight
increase of reflectance in the SWIR, as related to classes
Primary Forest, Bamboo and Secondary Forest, due to a lower
water content in the leaves. This similar high reflectance in the
SWIR occurs at Bare Soil and Straw covered soil.