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Figure 8. Sixty-four classes RGB-NDVI image. The 1977, 1986, 1993 classified NDVI are
assigned to RBG respectively. White, black and grey express no major change in
NDVI values between the three dates while colors illustrate change in vegetation
cover (magenta = important decrease in NDVI value in 1993; green = important
increase in NDVI value in 1993; yellow = important decrease in 1986 and 1993 ;
light blue = increase in 1986 and 1993; orange = important decrease in 1986 and
slight increase in 1993). (For color figure, see page 310)