Gradients of climate and ecoareal of Calluna vulgaris (L.) hull in pine forests of Russian plain and Western Siberia

Parameters of hydrothermal climate regime at vegetation period and also the projective cover and growth of Calluna vulgaris (L.) Hull. cenopopulations in geographically substituting pine forest types in the for-forest-steppe subzone of Russian Plain and Western Siberia have been studied. The likeness and differences of the heather ecoareals in these regions have been revealed, its full absence on the high bogs in Western Siberia particularly.