Formation of stocks wood twig food in pine plantations after the passage of ground fire

Abstract

The studies found that under the influence of the pyrogenic factor there are significant changes in the composition of all tiers of forest communities. The changes have a direct impact on the transformation of post-forest vegetation, its diversity and dynamics. After passing through the ground fire to a general weakening and destruction of small-growing, stunted trees. The remaining trees in the stand lose some needles, especially in the lower third of the crown. All this leads to an increase in light under the canopy of the remaining tree stand, which a ffects the formation of under crown vegetation. Restore damaged by fire stand depends on the intensity of the fire and stretched for quite a long period of time – up to 10 years, and in some cases and more. After the fire, there is almost complete destruction of the living ground cover. Reduced competition from moss-lichen tiers leads to the emergence and proliferation of herbaceous vegetation. In herbaceous vegetation in the first years after the fire, there are a considerable number of nitrophilous species that gradually replaced typical forest species. Mineralization of soil and increase light gives rise to a significant number of young growth of Scots pine. Further reduction of the main stand canopy reduces the viability of pine undergrowth, which is stored only in the form a “window”. Increasing the lig ht also leads to the grow th of underbrush species. Increasing the undergrowth increases food and shelter habitat quality hunting animals. Since studies have found an increase in stocks of wood-twig food in 1.5–2.8 times in comparison with the control.