Аңдатпа
The special Vegetation Temporal Index (VTI) is introduced for estimation of Kazakstan spring temperature-moisture conditions and crop yield forecast. VTI values are defined for each polygons (16/spl times/16 km) from 8 to 22 weekly's NDVI AVHRR/NOAA data (PSQ format). The validation was carried out on 1991, 1992, 1995, 1996 years data. It shown the good correlation between VTI values and corresponding spring wheat crop.