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inclination of slopes) but also the present morphogenetic processes often resulting in forms (canyons, ‘Tilke’, land-slides, talus-cones et c.).
Theplanning of towns, settlements andindustrial o b j e c t s, the projecting of urban, rural and industrial buildings and communication lines (roads and railways) reąuires the knowledge of both the main relief features (including inclination) and the distribution of unsuitable forms as scarps, walls, steep slopes, gorges, canyons, karstic sink-holes, inundated terraces, active alluvial fans, land-slides, hollows due to mining subsidence and other forms.
The knowledge of the relief is also necessary in the planning of water-undertakings, for the projecting of ameliorations and canals, e.g., the knowledge of the relief and the morphogenetic processes occurring in valleys and river basins where dams have been constructed (ratę of erosion and denudation, land-slides, karstic phenomena etc.).
The knowledge of the relief and forms both favourable and unfavour-able to various types of economy as well as the knowledge of the distribution of the landforms facilities a better planning and the morę rational use of the particular areas. The knowledge of both the rules of development of the young forms and the conditions of their development makes it possible to deal with unfavourable processes and forms (e.g. ravines, land-slides, sink holes etc.), to control and to transform naturę.
In some respect, however, the geomorphological map’s content is too complicated to be easily understood by a practician-non-geographer. For this reason, special maps may be constructed from the detailed geomorphological map forming a basis for all the geomorphological stu-dies and special works (just as the geological map forms a basis for every geological special study). There may be maps showing the distribution of the particular forms unsuitable for a particular type of economic activity (e.g. land-slides, ravines, talus cones, active alluvial fans, sink-holes) as well as improvement maps and ąualification maps.
The construction of the improvement maps depends on the fact that all forms occurring in the particular area and registered on the geomorphological map are assesed on their value and their use in a particular type of economic activity, e.g., surfaces of planation, accumulation plains, slopes, ravines, land-slides etc. for agriculture, building, Communications and other. Thus every form is considered either favourable or unfavour-able to a particular kind of economy.
Forms classified on this basis are being transfered by means of two signs (one of them showing favourable forms, the other one unfavourable forms) from the geomorphological map to the special improvement map. This map shows the economic evaluation of areas (forms and form com-plexes) for the particular types of economic activity from a geomorphological point if view.
The use madę of the geomorphological map by planning and economic institutions indicates not merely its scientific and theoretical value but also its practical one. Because of that scientific and practical significance of the map every geomorphologist who is examining and mapping a particular area has to take notice of every form, process and phenomenon from both a theoretical and a scientific point of view (age, origin) and a practical one (its economic evaluation, its use in economic purposes). There is no ąuestion but the twofold aspect is favourable to the further development of geomorphology.
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