The influence of species composition changes and quality of forestry operations on North-west Russian regions forest dynamics
Analysis of covered by forest lands of a number of North-west Russian regions was done on the base of officially published data. Relation between areas covered by coniferous and broadleaves groups of species were used as indicator of forestry operations quality. For the analysis the special matrix model was developed which offer the possibility to estimate the probabilities of species composition changes. For North-west Russian regions forest dynamics was revealed sharply changes after the year 1993. After this year proportion and area of coniferous forests decline significantly.