Table 2a. Clearings, completeness. See table 1 for details of the interpretations. 
  
  
  
  
  
  
  
  
  
  
  
Interpretation Number of clearings in | Total number | Number Accuracy 
field-checked new map | of clearings correctly 
interpreted interpreted 
in study 
Northwest quadrant 79 
1. Air photos 9 200 m (C) - 67 53 73% 
2. Air photos 9 200 m (A) - 49 43 67% 
3. SPOT PAN (B) - 70 51 68% 
6. SPOT XS (B) - 53 43 65% 
Southwest quadrant 135 
4. Air photos 9 200 m (B) - 50 49 53% 
5. SPOT PAN (A) - 86 74 67% 
7. SPOT XS (A) - 75 68 65% 
8. SPOT XS digital data - - - 65-77%" 
  
  
  
  
  
  
  
P? Not fully comparable to the others. Interpreted in two classes according to the confidence in the 
classification. For comparison with the others, the accuracy lies somewhere between 65 and 77 %. 
Table 2b. Clearings, shape consistency. 
  
  
  
  
  
  
  
  
  
  
  
  
Inter- Total # clearings | # interpreted 
pretation interpreted in clearings with 
study erroneous shape 
Northwest 
1 67 5 
2 49 2 
3 70 7 
6 53 5 
Southwest 
4 50 8 
5 86 19 
7 75 16 
  
  
  
  
  
  
Figure 1: Clearings, geometric accuracy. Comparing the delimitations from different materials. From 
left - first: SPOT PAN; second: SPOT XS; third: the manuscript for the new topographic map; 
fourth: all three superimposed. Scale 1:25 000. 
  
560