Post-pyrogenic tree species regeneration under the Tikhvin Ridge landscape conditions, North-West Russia

Abstract

The effect of ground fires on the success of later regeneration of tree species in the landscape locations of gentle hilly ridges of terminal moraines and ozovo-cam complexes of the North-Eastern part of the Leningrad Region was assessed. The study of the juvenile generation of tree species was carried out by a reconnaissance survey of forest areas traversed by wildfires on the transects of the tracks. The quantitative and heights of the re-growing tree species were taken into account. The method of correlation analysis was used to determine the degree of influence of external factors - soil conditions, the area of the plot passed by the fire on forest regeneration processes. The dependence between soil factors and categories of size of spruce and pine undergrowth in stands with a predominance of coniferous and deciduous species was determined. The size of the area covered by pyrogenic effects, depending on the granulometric composition of soils, has a significant impact on the regeneration of coniferous and deciduous species. Depending on the proportion of participation of pine and spruce and deciduous species, we can prognosticate the further development and formation of stands by species composition and prescribe forest management measures.