Figure 2 A color composite image of monthly GVI 
data. April(red), August(green) and 
December(blue) 
Figure 3 A color composite image of monthly GVI 
data. May(red), June(green) and July 
(blue) 
Figure 5 A color composite image of 1st to 3rd 
principal component. 1st PC(red), 2nd 
PC(green) and 3rd PC(blue) 
Figure 6 A color composite image of 4th to 6th 
principal component, 4th PC(red), 5th 
PC(green) and 6th PC(blue) 
Figure 7 Sixteen clusters from monthly GVI data 
in 1983 
Figure 10 Seven groups of land cover merged 
from sixteen clusters