SOIL MAPPING ACCURACY FROM BLACK AND WHITE, COLOR, AND INFRARED AERIAL PHOTOGRAPHY

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Abstract
The accuracy obtainable from four types of aerial photographic film in the mapping and description of soil and terrain features was measured. Black and white film gave a soil mapping accuracy of 72% and was just as good as the color or infrared films for the description of specific terrain features in mountain lands. The accuracy of the soil map in the mountain lands and the description of terrain features in an alluvial valley increased to over 80% with the color film. Infrared film, both color and black and white, gave slightly more accurate soil maps in the valley. The use of a film like Kodak Special Ektachrome MS Aerographic Type SO-151 is recommended for future soil surveys. Black and white prints and color prints and transparencies can all be obtained from the same roll of this film type.

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