Even in this case. an upper estimation of the areas restrictive to 
human occupation may be occurring. as a result of the whole 
process. Following theses results, in only 0.3% (1.2 square 
kilometres) of the study area is the occupation permitted. 
  
  
MABH PHYSICAL POTENTIAL 
580000 
  
7815000 
  
Legend: 
BÀ) Suitable areas 
4i Suitable areas with some 
restrictions 
Favourable areas with severe 
restrictions 
£1 Areas with severe restrictions 
in differents sectors 
Bl inadequated areas 
B Rock outcrop 
Note Thus map was produced considenng the slope, 
drainagen, and soil erosion potential of the 
MABH 
  
778 5000 
  
  
  
620000 
Sandra Costa 
Elaborated in August/1995 
  
  
  
  
  
  
  
  
Figure 3 — Physical potential map 
Rate (%) 
  
24 
5 0,3 
  
  
  
  
Classes 
  
O Suitable Areas 
C) Rock Outcrop 
C) Suitable Areas With 
Some Restrictions 
Cl Inadequated Areas 
@ Favourable Areas With 
Severe Restrictions 
Bl Areas With Severe 
restricions 
l'igure 4 - Percentage of each class in the study arca 
The map produced was superposed to the urban land-use map 
to estimate the percentage of urban class that is occurring in the 
same area of the classes of physical potential and to analyse the 
consequences of this. 
One result of this superposition is shown in table 2. According 
to this. 41.7% of the residential class is located in areas with 
severe restrictions. This means that environmental problems can 
be occurring because areas not recommended. from a physical 
viewpoint. have been occupied. Actually. in a local 
examination. most of the urban land-usc classes are in areas 
with severe restrictions. 
Some examples of the classes of the physical potential and of 
the urban land-use classes are presented in the next subsection. 
220 International Archives of Photogrammetry and Remote Sensing. Vol. XXXII, Part 7, Budapest, 1998 
4. 
re 
to 
E Wa |