This group also includes forests of scientific, historical and socio-cultural values. The second group comprises forests in densely populated areas, protection forests and forests of limited exploitation values. The third group comprises forests of densely wooded regions with mainly exploitation value. These forests are managed under sustainable forestry management for meeting national economic and export demands. Oak dominates within group of high density broadleaved species.
Stone birch belongs also to high density broadleaved species.
Such a collective name involves several species of Birches with dark-coloured bark and very hard wood. They are found in Eastern Siberia and the Far East. As regards areas covered, stands of Stone birch take second place after oak forests within the group of high density broadleaved species. In 1993 the volume of merchantable wood harvested amounted to 174 million m 3 . A considerable discrepancy has remained between the European-Urals and Asian parts of Russia with respect to both growing stock and final harvesting.