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Fig. 6. RGB color composite image of the 1977, 1986, 1993 NDVI assigned to RBG.
White, black and grey express no major change in NDVI values between the three
dates while colors illustrate change in vegetation cover (magenta = decrease in
NDVI value in 1993; green = increase in NDVI value focussed in 1993).
(see also page 205)