Computer classification of LANDSAT data from July 24, 1973 has resulted in measurements and maps of forest types for two New Hampshire counties. Signatures were developed from training sites and applied to test areas and then to the counties. Acreages of hardwood and softwood type and total forested area derived through this process compare favorably with Forest Service statistics for the same areas. Computer generated maps located hardwood, softwood and mixed wood types accurately when compared with low level aerial photography. Additional measurements made using data from August 29, 1973 and September 21, 1972 for one of the counties are reasonably consistent with those from July, 1973 data. Our techniques have such advantages as low cost and objectivity, making them particularly applicable in states having forest taxation laws based on general productivity.
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