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The peculiarities of distribution of oak stands in the Western Forest-Steppe of Ukraine are analyzed in the work. The analysis of forest typological structure of stands with the participation of common oak in the conditions of the Western Ukrainian forest-steppe forestry district is performed. The structure of oak stands areas in the context of edatopes and forest types has been studied; their quality and completeness, composition and origin have been identified as well. The largest share of oak forest stands in the Western Forest-Steppe is found to be concentrated in fertile site type conditions – 79.3 %. Fairly fertile site types of forest vegetation conditions make up 20.5 % of the area of oak stands. According to the degree of soil moisture, common oak in the Western Ukrainian forest-steppe forestry district prefers fresh conditions, where 65.6 % of oak forests in the region are concentrated. In total, common oak is involved in the formation of 47 forest types in the study area, in 19 of which it is considered to be type-forming species. Most oak stands are of the first class of stand quality (49.9 %), and a significant part (35.7 %) of plantations is of the second class. The average stand quality is estimated as I.3. Oak stands stocking in the Western Forest-Steppe, for the most part, is medium-sized. Their average stocking is 0.73. Stand stocking of the largest share (39.3 %) is 0.7. Medium-sized stocking of stands in total amounts to 55.9 % of the total area of oak forest stands in the study area. The share of high-density stand stocking in the complete structure of oak stands of the Western Ukrainian forest-steppe forestry district is 42.3 %. Furthermore, plantations, where oak constitutes only 4 units i.e. 20 % of the total area, are found to dominate in the Western Forest-Steppe. The average ratio of oak share in plantations is 5.7. The age structure of the oak forests of the Western Forest-Steppe is revealed to be uneven, with a significant predominance of medieval stands – 54.2 %. Mature stands occupy only 8.0 % of the area of oak forest stands of the Western Forest-Steppe. The average age of oak stands in the Western Ukrainian forest-steppe forestry district is 61.2 years. Furthermore, artificial plantations are found to prevail in the studied region (69.5 %), usually created by planting forest cultures. Oak stands of natural seedling-origin make up 27.3 % of the area of oak forests of the Western Forest-Steppe, natural vegetative-regenerated origin stands amount to 3.2 %.

Аналіз лісотаксаційної структури дубових лісостанів Західного Лісостепу