Abstract
This paper describes a procedure for the integration of airphoto analysis and vegetation data. Often the level of detail available in an airphoto is not coincident with that of the classes developed for the vegetation data. The term 'photoclass' was adopted to define the smallest distinct assemblage of plant species that could be discerned at a specific scale on a specific set of airphotos or other imagery. The photoclasses developed for a set of imagery represent the vegetation as interpreted from the image, whereas the vegetation classes represent the vegetation as interpreted in the field. By describing each photoclass and vegetation class, and then showing their relationship using an image interpretation matrix, the level of detail of each photoclass can be determined.

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