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Field photograph 
1999 
  
  
  
  
  
Figure 3. Degraded areas (red) caused by mining activities in the region of the Tepequém plateau increased by 388% 
from 1987 to 1994, comprising 1,070 ha, 2,550 ha, and 4,150 in 1987, 1991, and 1994 maps, respectively. After 
Garimpeiros left the region (around 1993/1994), vegetation starts recovering degraded mined areas, Maps based on 
images acquired in 1996 and 1999 showed that degraded areas decreasing to 3,660 ha and to 3,391 ha, respectively. 
Field photograph was taken in 1995 and shows an example of degraded area (see arrow in 1999-map for location). 
  
  
    
2 km 
  
  
  
Figure 4. Evolution of degraded areas: green and blue indicate vegetation regrowth from 1994 to 1996 and from 
1996 to 1999; comprising 490 ha and 759 ha, respectively. 
  
International Archives of Photogrammetry and Remote Sensing. Vol. XXXIII, Part B3. Amsterdam 2000. 69