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Vegetation Classification and Map of Hastings
We purchased IKONOS coverage of Hastings. 9/27/2000. This satellite coverage produces reflectivity data on each 4m x 4m pixel in 7 wavelengths. We used principal component analysis (TMT Mips) to classify each pixel based on similarity using all 7 wavelengths. The pixels were then aggregated using similarity of nearest neighbors. We set the number of different units in the classification at 50. We then did ground truthing and comparisons to areas where species frequency and cover data were available. We then aggregated similar areas based on the ground truthing. We kept 18 vegetation units. Some units (Annual Grass, Annual thatch) may have had more than one unit. For example, some chamise chaparral could be dominated by Adenostoma, with varying degrees of co-dominance by Artemesia. Finer classification of these larger units is always possible, but the map with about 18 units is probably of most use to a range of reserve users. The coverage of Hastings is presented from ArcView 3.x and ArcView coverage of Hastings is available for those requiring more detailed information. The original Hastings IKONOS images are on file at the Hastings offices.
Exported Image of Hastings Vegetation Classification Map (JPG, 0.6Mb)
Exported Image of Key to Hastings Vegetation Classification Map (JPG, 100K)
