Review Of Models And Measurements Of Multispectral Reflectance By Plant Canopies Recommendations For Future Research

Different vegetation canopy reflectance models have been reviewed. Several models based on the one-dimensional radiative transfer equation developed by Kubelka and Munk are discussed with respect to their suitability for remote sensing applications. Another class of models based on radiative transfer within a finite number of uniform layers has been treated as well. Out of numerous results obtained from canopy reflectance measurements, examples are given concerning cause-effect relationships, non-Lambertian reflectance, model verification, crop yield estimation and the assessment of the influence of the atmosphere and the observation geometry. Recommendations for future research are discussed, which are dealing with crop growth monitoring, model inversion and application of atmospheric correction models. The effect of the polarization of scattered radiation should be also investigated in relation to the increased interest in data acquisition under varying view angles.

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