was applied for correcting the infrared reflectance for
soil background (equation 9). This assumption holds for
many soil types.
3. For a green vegetation, the inverse of a special
case of the Mitscherlich function, namely the one
passing the origin (equation 15), was used for descri
bing the regression function of LAI on the infrared
reflectance corrected for background. In this semi-
empirical model two parameters of a physical nature
have to be estimated empirically.
4. Model simulations with the SAIL model indicated
that the accuracy of results obtained with the model
for correcting for soil background corresponds to the
accuracy of results obtained if soil reflectances are
known.
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