we 
Graph of forest area variations 
  
Legend 
forests determined by computerized 
interpretation 
  
  
  
T borders of forests taken from 
the topographical map 
  
  
  
decrease in forest area 
for the period of 1974-1993 
regions of forest vegeneration 
reneval 
  
water bodies 
  
  
  
  
353 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B7. Vienna 1996