The publication of this Handbook was supported by the Russian Federation

Crop Scan radiometer) [16].
In cases of  vegetated surfaces, soil salinity closely correlates with the vegetation index and indices 
calculated from the brightness of  colour within the red and near-infrared spectra. The latter also 
reflects the condition of  vegetation, which can be either poor (due to high salinity) or good (due to 
low salinity of  soils) (Fig. D.4). Approaches to the assessment of  soil salinity by use of  the normalized 
difference vegetation index (NDVI) and the condition of  vegetation (primarily, agricultural crops) 
have been described in numerous publications (e.g., [2, 7, 13, 14] etc.).
Fig. D.4. The relationship between albedo and the normalized difference vegetation index (NDVI) 
in different surface categories: 1 – water; 2 – 5 – soils overmoistened to different degrees; 6 – soils in