Clevers, Jan 
  
Table 1: Results for a logistic curve fitting to LAI measurements of wheat fields at the Alpilles experiment. 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
——plot 210 
—— plot 300 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
eva plot 210 
plot 300 
Field-id M a ti b t, rmse 
101 1.201 0.06426 52.7 0.4456 147.4 0.17 
120 1.995 0.08193 53.4 0.3872 143.9 0.28 
210 2.274 0.06485 43.4 0.4212 144.7 0.13 
300 6.948 0.04504 86.0 0.0695 110.2 0.05 
LAl-destructive measurements Fitted curves to LAI 
AN 
4 —5$— plot 101 = 
3 T a pa 8: — 
  
  
  
Figure 1: LAI field measurements for wheat fields in 
1997 (day of year) at the Alpilles test site 
Figure 2: Logistic curves fitted to the LAI field 
measurements for wheat fields in 1997 at the Alpilles 
test site. 
  
WDVI wheat 
  
Day of Year 
  
  
—*—plot 101 
—#—plot 120 
—#—plot 208 
—plot 210 
—#— pilot 300 
  
  
  
  
  
Figure 3: WDVI estimates for wheat fields derived 
from the 1997 SPOT images at the Alpilles test 
site. 
LAI estimated from SPOT data 
  
  
  
LAI 
" 
  
  
  
  
200 
  
  
  
—*—plot 101 
—R- plot 120 
—#—plot 208 
—-plot 210 
—#—plot 300 
  
  
  
  
LAI comparison 
  
o 
  
N 
  
LAI (destructive) 
  
  
  
  
2 
LAI (derived from SPOT) 
  
  
  
Figure 4: Estimated LAI values derived from SPOT 
images in 1997 for wheat fields at the Alpilles test 
site. 
Figure 5: Comparison between the LAI derived 
from SPOT data and field measurement of LAI 
for wheat fields in 1997 at the Alpilles test site. 
  
276 International Archives of Photogrammetry and Remote Sensing. Vol. XXXIII, Part B7. Amsterdam 2000.