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7 October 2011 Why confining to vegetation indices? Exploiting the potential of improved spectral observations using radiative transfer models
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Abstract
Vegetation indices (VI) combine mathematically a few selected spectral bands to minimize undesired effects of soil background, illumination conditions and atmospheric perturbations. In this way, the relation to vegetation biophysical variables is enhanced. Albeit numerous experiments found close relationships between vegetation indices and several important vegetation biophysical variables, well known shortcomings and drawbacks remain. Important limitations of VIs are illustrated and discussed in this paper. As most of the limitations can be overcome using physically-based radiative transfer models (RTM), advantages and limits of RTM are also presented.
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Clement Atzberger, Katja Richter, Francesco Vuolo, Roshanak Darvishzadeh, and Martin Schlerf "Why confining to vegetation indices? Exploiting the potential of improved spectral observations using radiative transfer models", Proc. SPIE 8174, Remote Sensing for Agriculture, Ecosystems, and Hydrology XIII, 81740Q (7 October 2011); https://doi.org/10.1117/12.898479
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