a) b 
ui. han | 
; lis Ô e : : : 
g' ' : ' e © m ; 
Sri & wl | 
= : m : ; : ; ; : 
2-17 7 ; : : ; 8 : ; ; ; 
Sa] | Sg k k i ? | 
2 : 1 : à > 0.5 4 i Y | i 
9 21 : x & ; A : : 
$31]: = ; 
i | : D Qa : : : ; 
a. 4 4 ' 1 1 4 4 ‘ ’ 
E dme qu | | NE: z | 
37i 0 * ó 8 
-29 ! : ; ; T ; i ; : 
ë ; : ; 1 0.3 4 ; 1 1 i i 
31 4 : : : ; : ; ; y 
= A = 2 
-33 v ; : ; : ; : ; 
35 ; ; i — — 0.2 : i ; i 
"Water Dead trees Forest Scirpus sp. Eichhornia sp. Water Dead trees Forest Scirpus sp. Eichhornia sp. 
C) HH A HV v VH O VV C] HH A HV V VH O VV 
  
  
  
  
  
Figure 5. a) Mean o? values for all polarizations to each class. b) Coefficient of variation for all polarizations to each class. 
  
  
  
  
  
  
  
„10 -10 
d rr S 
-12 + e Fi 7 um + 
n] né eue 2» ^ -14 | X à 
S m = Tee [| 
„16 + mn ^ A. A : s -J6 JN, A A . 
= A^ Eichhornia sp. = au Eichhornia sp. 
18 4 A A e -18 4 A A e 
A A A A 
~.20 4 Forest =~ -20 + ^ Forest 
8 à A 8 5 At A 
B 2 Dead trees A Dead trees 
-24 4 -24 + 
f soute A 
21, yv Scirpus sp. -26 — vY* Scirpus sp. 
234$ Ÿ "v y -28 4 v v 
vov v Water v 7 Water 
-30 4 v -30 — 
-32 4 -32 4 
-34 T T T T T T T T T T T -34 T T T T T T T T T T T 
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.2 0.3 0.4 0.5 0.6 0.7 0.8 
Coefficient of Variation Coefficient of Variation 
„10 -10 
-12 4 -12 4 
-14 À -14 4 
m Ld 
-16 4 : . -16 4 : : 
. Eichhornia sp. a Eichhornia sp. 
18 4 e e -18 4 e e. e e 
~.20 jk oad’ sb Forest —-20 [^ f Forest 
Pe: a JANET: ^ 
7-22 ] n — 22 À = + 
P. Dead trees Dead trees 
-24 4 + -24 4 + 
AN Ad Scirpus sp. 26 a A Scirpus sp. 
A v A A > 
:28 -| £ PEN „928.4 A, 
A Water ak a Water 
-30 . i 301 vw A 
21 yw 3214 
v 
-34 ess -34 RE er Pre ET 
0.2 0.3 04 0.5 0.6 0.7 0.8 0.2 0.3 0.4 0.5 0.6 0.7 0.8 
Coefficient of Variation 
  
  
  
  
  
  
  
  
Coefficient of Variation 
  
Figure 6. Coefficient of variation and the four polarizations plot for all samples of the classes. 
  
  
  
  
  
  
VSI CSI BMI 
Class Mean S Mean S Mean S 
Dead trees 0.19 0.06 0.44 0.09 35.5 19.6 
Forest 0.27 0.05 0.50 0.07 59.4 21.9 
Scirpus sp. 0.25 0.05 0.46 0.08 63.5 13.0 
Eichhornia sp. 0.25 0.05 0.51 0.07 49.0 11.7 
  
  
  
  
  
  
  
  
  
  
Table 6. Biophysical indices mean values and standard deviation (s) for all classes. 
533 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B7. Vienna 1996