%SCiSkisisii&ii-:-,,":'. 
Sympoi 
Specti 
in the 
S.Gandic 
Departmen 
ABSTRAC' 
Thematic M 
vegetation i 
Key words:' 
RESUME: ( 
utilisant des 
Les canaux 
Mots clés: T 
1. INTROE 
The applic; 
spectral res 
A fair am< 
ground-bas 
establishin, 
interest su< 
fertilizer tr 
etc. Air - 
satellites, e: 
frequent w< 
The Thei 
better achi< 
greater pote 
regions wii 
resolution ] 
essential. Ir 
B1 (0.45 -( 
pm) allow z 
increased qi 
very import 
agricultural 
(Toll, 1985 
different ch 
classificatio 
The prese 
out in an 
measuremer 
2. STUDY S 
Approxi 
the sout 
eminent! 
expands 
proximit 
is a high 
citrics ar 
rice are s 
substituti 
the refen 
But th 
pressure ■ 
and its s 
alteration 
parcelat 
spatial r 
In thi 
have b 
tty. 
WSeÊsÊÈ