Sympos 
Presen 
Frencl 
Michel L 
Ministry oj 
Jean-Piei 
Company i 
ABSTRACT : 
rities as 
(at 1/50.0 
of thè wate 
classifica 
ture of th 
RÉSUMÉ : C 
scientifiq 
l'étude do 
actuel et 
zones humi 
ont apport 
températur 
1. INTR0DU 
The aims o 
the presen 
and land c 
of Sologne 
of 130,000 
ted in the 
There are 
tect these 
important ■ 
and fishing 
and cattle 
seemed a g 
tative and 
an aid to 
laboration 
authoritie 
2. METHOD 
Two Landsa 
tape and 6/ 
false colo 
1/50.000 s 
tion (pixe 
30m in the 
to establi 
for Landsa 
The seco: 
land cover 
topographic 
maps and a 
last natio: 
sible to o 
hereafter : 
ting to de 
ter surfac 
humidity ii 
a control 1 
sing : cla; 
areas near 
The chanj 
rison of ii 
data callei