Carte hemerobique de la Suisse, `degres d'artificialisation ou de naturite'; essai d'evaluation de l'impact de l'homme sur la nature Hemerobic chart of Switzerland (degrees of artificialization or naturalness); evaluation of the impact of human activities
Béguin, Claude; von Felten, Andrea
A hemerobic chart of Switzerland represented by thirteen degrees of artficialness has been compiled with the aid of two geographic data banks (on the one hand plant communities, on the other hand human construction). This chart, based on a kilometric raster, is tested and commented on. In its most densely populated areas, Switzerland enters into the metropolization process. Zürich, Basle, Bern and Geneva appear to be shattered hemerobic centers of gravity. In contrast, the Alps and the Prealps display large natural territories. A model (RIMINI) verifies the hypothesis of a correlation between the degree of artificialness, the altitude and/or the declivity. The hemerobic chart of Switzerland, for example, facilitates the localization and the selection of the km2 continuums for the establishment of ecological net works. Compared to the melliferous potentiality chart, it reveals the positiv impact of man on the nature. Finally, by using the research on landscape perception which underlines the importance of the complexity and structure of the environment (most often shaped by man), the authors try to understand better the esthetic qualities of the human influence (degrees of artificialness) in harmony with a respectful management of the landscape.