Abstract
The results of floristic, coenotic and biotopic research of the phytocenosis cultures variety of the vegetation cover of the park-monument of landscape art of local value «Park-square» (Chernivtsi, Myron Korduba Street) are resented. Species composition of aboriginal (11 species) and introduced (19) woody plants is established. A complex evaluation of exotic dendroflora on the main biomorphological, bioecological and decorative indicators was carried out. It was revealed that most plants belong to a group of decorative and highly decorative plants in the absence of low-decoterative plants. It is established that the phytocenosis cultures of the park-square are characterized by the highest class of perspective and use with maximum recreational load. It has been investigated, that under condition of optimization of structure of existing plantings with participation of beautiful flowering bushes and decorative herbaceous species, the increase of their general esthetic estimation will be provided. The coenotic and ecological purpose for the lawns of the park was characterized. The park's lawn cover is assigned to the association Lolio-Plantaginetum majoris (Linkola 1921) Beger alliance Polygono-Coronopodion Sissingh 1969 order Polygono arenastri-Poetalia annuae Tx. in Géhu et al. 1972 corr. Rivas-Mart. et al. 1991 class Polygono-Poеtea annuae Rivas-Mart. 1975, and intended for mesophytic, hemihydrocontrastphilic, hemiaerophobic, subacidophilic, semi-autotrophic, acarbonphilic, nitrophilic conditions. On the territory of the park, 19 species of alien plants xenophytes were identified with the predominance of kenophytes of North American origin, epecophytes that are confined to anthropogenic-transformed growing areas. The most dangerous among alien plants is a quarantine allergic species Ambrosia artemisiifolia, single species of which are found at the park territory and is assigned to the association groups Lolio-Plantaginetum majoris. Threats of biomonoforming of park phytocenosis cultures were analyzed and the priority of studying of alien plants in the protected areas of the city was justified.
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