Perculiarities of boreal oak (<i>Quercus boretalis</i> Mich.) growth in forest ecosystems of Ukraine

Abstract

The process of growth of full (normal) tree stands (plantations) of red boreal oak in otters, sudibrovs and subhors in the age range of 10–100 years is analyzed. The need for the implementation of the tables for the growth of the specified species is due to their absence in the Forest Taclish Reference Book. Comparative analysis of growth of full (normal) tree stands of red boreal oak and corresponding indices of full tree stands of common ash is carried out. It has been proved that the growth of tree stands of boreal oak differs greatly from the growth of tree stands of common ash not only in the same types of forest growth conditions but also in the same bonitet. The implementation of the relevant tables eliminates the discrepancy in the determination of the main tax rates, which is due to the application of oak plantations of red boreal oak tables of growth, developed for the tree-planting of common ash. The major difference in the basic taxonomic parameters in the growth of these species is, first of all, in a significant reduction of their stocks according to the estimation using growth tables for common ash, especially at maturity. It has been proved the necessity of implementation the tables of growth of red boreal oak for precise and impartial assessment of its tree stands during taxonomic and scientific researches of growth of this species so far as recommended for mentioned purposes tables of growth of common ash don’t enable to get reliable results. It has been accentuated that implementation of boreal oak is necessary for increasing productivity level of poor, according to riches, forest ecosystems, afforestation of eroded and low-valued lands, formation of new stable agrolandscapes which ensure increasing the woodiness and forming the sustainable agrosphere.