EVALUATION OF THE LAYOUT OF THE DIFFERENT PINE PLANTATIONS IN THE VAIŠVYDAVA FORESTRY

Abstract

The master's thesis analyzes which layout variants of Scots pine are optimal for the conditions of Lithuania's forest ecosystems. The research was conducted in the Vaišvydava forestry unit of the Dubrava Regional Division, within a demonstration-experimental and educational plantation complex, where four layout variants of Scots pine seedlings were planted. The data was processed using Microsoft Excel. The aim of the study was to determine which layout variant of Scots pine seedlings ensures the best quantitative and qualitative parameters, as well as the best condition, in 27-year-old plantations.

Data analysis showed that the initial layout of the seedlings had an impact on tree diameter and stem volume. Specifically, as the spacing between rows increased and the spacing within the rows decreased, the values of these indicators increased, while seedling survival rates decreased. When evaluating the quality parameters and condition of the Scots pine plantations, it was found that the best results were obtained in the fourth layout variant, where the spacing between rows was 2 meters, and the spacing within the rows was 0.84 meters.