VEGETATION MAPPING ON HARDWOOD RANGELANDS IN CALIFORNIA

Spectral Mixture Analysis (SMA) was used to distinguish the fractional abundance of green foliage, dry grass, and soil in Airborne Visible I nfrared Imaging Spectrometer (AVIRIS) data. Three maximum likelihood c lassifications were performed using topographic data only, SMA fractio ns only, and both topographic and SMA fractions. The predictions were compared to a held based vegetation map and to an aerial photograph of the scene. The combined data set produced the highest correspondence with the vegetation map for an overall correlation of 57 per cent for five classes. Part of the difference was attributed to misclassificati on in the held-based map.