Abstract
A reductionistic concept is being pursued in the 1∶25 000 geomorphological mapping of the Federal Republic of Germany. Complex landscape elements with a base length greater than 100 m are broken down into partial elements and re-interpreted in terms of quantificational or abstractly defined, theoretically neutral map symbols. The genetic aspect is expressed by areal colouring. In this way it aims to achieve an interdisciplinary utilization of such information. This reduction has proved to be too drastic insofar as it gives rise to irretrievable loss of information. The claim that use-oriented, ecologically relevant information would be derivable from the GMM-25 has not been substantiated. As ecologically justifiable evaluation must also consider as its most fundamental indicators the quality and distribution of biotopes. These are not even rudimentarily included in the GMM-25. The uncontextualized blending of information units which only make sense in heterogeneous contexts to produce a single map is antithetical to the principle of subject related selection of relevant characteristics and prevents comprehension of the systematic relationships.
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