Charakterystyka ekologiczna siedlisk polnych województwa krakowskiego przy zastosowaniu autekologicznej metody Ellenberga. Część I. Charakterystyka mezoregionów [Ecological description of field habitats situated in Kraków province according to the autoecological method of Ellenberg. Part I. Description of mesoregions

Twelve physiographic regions, determined in Krak6w province, were analysed using 1398 Braun-Blanquet phytosociological surveys of grain and root crops. The evaluation was made accord ing to the Ellenberg method in which, weeds were considered to be indices of thermal (T) humidity (W), soil reaction (R), nitrogen content (N), and soil biological activity (G) conditions. The method proved to be useful to demonstrate differences between studied mesoregions