This silvicultural practice consisting of regeneration,
young stand tending, thinning from below using thinning
guidelines expressed as sufficient stand density, drainage of
peatlands and in some cases fertilization lead to an increase
in forest growth of 40% between 1950 and 1990 (Fig. 1).
In spite of young stand management aiming at coniferdominated stands, intensively naturally regenerating
hardwoods guaranteed mixed stand structures in most cases.