"Ion Ionescu de la Brad" University of Agricultural Sciences and Veterinary Medicine, Iași
Abstract
Soil formation is a process of biological nature, because humus, the specific
and fundamental soil component, is organic. Soil mapping required the knowledge of soil
classification, climate, rock relief and plant species from canopy, which determined the soil
formation and evolution. The flower habitat is the most important element from the point of
view of soil mapping, because it allows getting practical and synthesis deductions of zonal,
interzonal and azonal soil distribution. Frequently, in soil mapping, they specify only the genus
of dominant plants (for instance, Festuca sp.and Carex sp.), without the species. For the
classification of plants from the spontaneous flora, it is necessary to specify both the species of
plants found in the studied habitat and their abundance and dominance. The paper presents
only a few plant species belonging to the same genus, which developed on certain soil types
with different characteristics
