305 
A total of 
.75, 2, 2.25, 
reflectance 
R ] ) were 
tdices were 
lex (NDVI) 
ation index 
U less than 
of (750-850 
g. 6(b)) are 
ie effects of 
e simulated 
leters used 
rtnan-Kuels 
here means 
significantly 
Figure 6 Vegetation indices vs fraction of absorbed photosynthetically active radiation