A soil-adjusted vegetation index (SAVI)

Publication Type:
Journal Article
Remote Sensing of Environment, 1988, 25 (3), pp. 295 - 309
Issue Date:
Filename Description Size
Thumbnail2009001129OK.pdf927.47 kB
Adobe PDF
Full metadata record
A transformation technique is presented to minimize soil brightness influences from spectral vegetation indices involving red and near-infrared (NIR) wavelengths. Graphically, the transformation involves a shifting of the origin of reflectance spectra plotted in NIR-red wavelength space to account for first-order soil-vegetation interactions and differential red and NIR flux extinction through vegetated canopies. For cotton (Gossypium hirsutum L. var DPI-70) and range grass (Eragrostics lehmanniana Nees) canopies, underlain with different soil backgrounds, the transformation nearly eliminated soil-induced variations in vegetation indices. A physical basis for the soil-adjusted vegetation index (SAVI) is subsequently presented. The SAVI was found to be an important step toward the establishment of simple °lobal" that can describe dynamic soil-vegetation systems from remotely sensed data. © 1988.
Please use this identifier to cite or link to this item: