COMPARATIVE ANALYSIS OF INDICATORS OF LINEAR GROWTH OF PINE UNDERGROWTH BEFORE AND AFTER THE REGENERATION FELLING
UDC 630*232:630*221.411:630*174.754
Key words: regeneration felling, Pinus sylvestris L., linear growth.
For citation: Prishchepov A. A. Comparative analysis of indicators of linear growth of pine undergrowth before and after the regeneration felling. Proceedings of BSTU, issue 1, Forestry. Nature Management. Processing of Renewable Resources, 2021, no. 1 (240), pp. 13–19 (In Russian). DOI: https://doi.org/10.52065/2519-402X-2021-240-2-13-19.
Abstract
To carrying out of research three trial plots were laid on the territory of the forest fund of the Vileika Experimental Forestry in the areas with the same growing conditions (Pinetum pleuroziosum), where the first reception of regeneration felling was carried out and there is an pine undergrowth preliminary generation. One trial plot (control) was laid in an area with similar growing conditions, where regeneration felling was not carried out. On each trial plot, model specimens of pine undergrowth of preliminary generation were selected, in which the annual height growths were measured for the entire life period. The data obtained were subjected to statistical analysis using the Student's t-test to establish the reliability of differences between the values of the growth of pine undergrowth.
As a result of the research, it was found that during the life of pine undergrowth before the regeneration felling, the differences in linear growth rates on the experimental and control trial plots are not statistically distinguishable. During the period of life after the regeneration felling, the values of linear growth on the trial plots are on average 44.3% higher than on the control trial plot. It was also found that the first reception of regeneration felling contributed to an increase in the average annual linear growth of pine undergrowth by 33.5%.
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