Features of age dynamics of natural regeneration of Scots pine in the fresh pine sites of Kyiv Polissia

Authors

DOI:

https://doi.org/10.31548/forest2020.01.045

Abstract

The dynamics of the natural regeneration of pine stands on a recently felled site in the conditions of fresh oak-pine sites in the Kyiv Polissia from the moment of the self-sowing to the formation of forest coenosis is analyzed. The features of growth and current sanitary state of natural regeneration are characterized. It is established that the amount of natural regeneration of pine on a 10-year clear cut is 1.5-2 times higher than the initial density of traditional planted forest under such forest sites and is sufficient to reproduce high-yielding pine trees in the study area. In comparison with planted pine more age and territorial biological diversity of natural regeneration has been observed. This, in turn, will increase the resilience of forest ecosystems in the face of global climate change, leading to forest degradation and widespread pine dieback.

The results of the studies indicate a favorable effect on the conservation and growth of the natural regeneration of the pine forest microclimate of the adjacent forest walls, first of all, the mother plantations adjacent to the eastern side.

The dynamics of the amount of natural regeneration of pine depends, to a large extent, on the peculiarities of the change of coenosis features on the area. During the first four years, as the non-forest herbaceous formations increase, there is a 20% increase in the loss of self-seeding. A decrease in the intensity of loss of natural regeneration of pine has been found, beginning from the fifth year, it is mainly caused by the restoration of the area and features of forest coenosis on individual facies with the highest density of undergrowth after its closure.

A number of conclusions and suggestions have been made regarding the use of natural forest regeneration for the reproduction of biologically stable pine stands in the study area. In particular, it is determined under what factors it is possible to obtain a satisfactory natural regeneration of pine in the conditions of a fresh oak-pine site of the southern part of the Kyiv Polissia.

Keywords: Scots pine, seed bearing, self-sowing, natural regeneration, natural restoration, forest potential.

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Published

2020-03-31

Issue

Section

FORESTRY