Figure 3

Result of the hierarchical clustering of the forest-steppe zone into ten clusters (bottom left subfigure) achieved on all macroclimatic variables, and the distribution of these clusters in the geographic space (main figure). The colors of the main figure and the subfigure match. Regions originally delineated by Erdős et al.¹ but not used as input by the clustering are labeled and displayed with solid black lines for comparison purposes.