The effect of the difference between front and back surface leaf reflectance in the SAIL model

Abstract

Canopy reflectance model is a useful tool to correct the effect of measuring conditions like as the changes in observation angle and solar irradiance angle. So that, if we use the corrected reflectance data by the model for estimating vegetation index such as NDVI, we can derive more accurate information of vegetative distribution from satellite data.
Nowadays, the famous model for canopy reflectance is the SAIL model. (Verhoef, 1984) This study notices that the leaf reflectance parameter of the SAIL model is considered only front surface of leaves. And so, we survey the influence on canopy reflectance. As a result of it, we find that it is not adequate to predict canopy reflectance by using only front surface reflectance of leaves.