СУЧАСНИЙ ЖИТТЄВИЙ СТАН ЛІСОВИХ КУЛЬТУРФІТОЦЕНОЗІВ КРИВОРІЖЖЯ

Abstract

According to the procedure V.A. Alekseev the current life state of cultivated forest community in Kryvorizhzhya was investigated. These cultivated forest communities represent the main types of artificial trees and bushes planted in the region and arranged in contrasting environmental conditions. Predicting the cumulative effect of the action of natural and anthropogenic factors, selected areas of environmental conditions cultivated forest communities: 1) favorable; 2) a relatively favorable; 3) relatively adverse; 4) adverse. In most cases, cultivated forest communities in region were established in 30–60 years of the last century with the use of the common oak ( Quercus robur L.) and European ash ( Fraxinus excelsior L.). In areas favorable and relatively favorable environmental conditions the current life state of cultivated forest communities in region was rated as “Healthy” (83–86 points by a scale V.A. Alekseev). In areas of relatively unfavorable and negative – as “weakened” (64–68 points by a scale V.A. Alekseev). In natural forest plant communities (favorable environmental conditions of the zone), wood first and third tiers have maximum numerical values of current life state. In addition, the state leaves these phytocenoses was the least vulnerable to the effects of natural factors. The cultivated forest communities in the region higher life status indicators are also identified for the first tier of trees. However, the third tier of trees characterized by minimum values of this parameter, which is likely to negatively affect the further development of cultivated forest communities. In addition, the crown condition of phytocenoses was the most vulnerable to the effects of anthropogenic and natural factors.