L 500 meters I 
  
Pe 5 6 89 
  
Legend 
  
Figure 3 - Phytogeologic map of the study area: low-vegetated terrains upon hydrothermally altered 
materials (1); low-vegetated terrains upon biotite-granite-derived lateritic soils with duricrusts (2); densely 
vegetated terrains upon biotite granite-derived soils (3); low-vegetated terrains upon biotite granite-derived 
soils (4); and fault cutting across the area (5). 
12 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B7. Vienna 1996 
KEY 
ABST 
This p 
Theme 
Scenes 
firstly, 
of sma 
with sj 
RÉSU 
Une te 
séries 
passag 
import 
Despit 
human 
of sucl 
emissi 
estima 
the pa 
growtl 
sink, : 
specie 
such a 
Satelli 
defore 
1980; 
Howe 
poorly 
studie: