suggested in 
estrictions and 
Df the city 
stical data 
Dlications by 
economic and 
statistical 
so-called 
lormal street 
le city and how 
Lrated from the 
each unit can 
-s an inventory 
.nd 1972, and 
1970 (FABRICIUS 
n. The size 
rom the photos. 
ial photos: 
ted under a 
unit, acquired 
Lly big trees, 
lg of trees 
which result 
;limate effects 
dust particles 
'eplaced by 
t young trees, 
etely dif- 
f inally, big 
by new build- 
be revised 
an areas need 
arately from 
m aerial photo 
ways easily 
trees which 
the mentioned 
lie impossibil- 
sible trees, 
Figure 1 
City-map of Freiburg im Breisgau +/ 
showing city districts, statist, 
districts and statistical blocks > /q/A 
SCALE: 1 : 12 5°o 
Nil ;//