Forest vegetation a part of the Privolzhskaya lesostep nature reserve «Verkhovya Sury»

Presents the results the study of the forest communities in the central part of the Volga Upland: a part of the Privolzhskaya Lesostep' Nature Reserve «Verkhov'ya Sury». On the basic of forest inventory dates the average values of taxation index are received. At same time all components of stands analyzed. On its basic the age row divided to the phases and periods. The investigation showed that received age row is the row of forest community’s transformation. Disturbance of the forest-forming process resulting to change of native stands to secondary. Since the clear-cut logging cutting begins, the square of leaved breeds (birch advantaged) increased steadily. As consequence of large-scale intermediate cutting, sanitary and voluntary-selective cutting, sparse pine timber stands are formed. At the same time transformation of the low canopies, happen. These factors caused change for the worse of pine (Pinus sylvestris L.) natural regeneration conditions. As result at now time formed of pine timber stands by natural regeneration expelled almost entirely.