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Why confining to vegetation indices? Exploiting the potential of improved spectral observations using radiative transfer models

Authors

Atzenaberger,  C.
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Berger [Richter],  Katja
0 Pre-GFZ, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Vuolo,  F.
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Darvishzadeh,  R.
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Schlerf,  M.
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Citation

Atzenaberger, C., Berger [Richter], K., Vuolo, F., Darvishzadeh, R., Schlerf, M. (2011): Why confining to vegetation indices? Exploiting the potential of improved spectral observations using radiative transfer models - Remote Sensing for Agriculture, Ecosystems, and Hydrology XIII, SPIE Remote Sensing, 2011 (Prague, Czech Republic 2011), 263-278.
https://doi.org/10.1117/12.898479


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5027970
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.