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The article presents the results of the first conducted, sub-tree inventory of street plantations of 3 cities of Poltava geobotanical district. It was established that 48 species of dendrophytes, mainly deciduous trees, were used for landscaping of street plantations of alley type. The species diversity and condition of the existing plantations were assessed, the obtained data provided the basis for the development of recommendations for expanding the range of species suitable for use in street plantations.According to the materials submitted in the District Assortment of Trees and Shrubs of Ukraine, the proposed range of species was assessed in terms of suitability for the formation of green areas of urban settlements of Poltava Geobotanical District. 483 species recommended for the Forest-Steppe zone were identified and the bio-ecological features and potential sustainability of the proposed range were analyzed, which allowed to exclude 224 species from the list of suitable for use in street plantations and to propose 67 new cultivars for the region. The current list of potentially suitable species includes 326 cultivars.Possibilities of production of planting material by local enterprises for expansion of the range of trees, bushes and lianas which are recommended for use in gardening of streets of settlements of the region are estimated. It was found that the potential increase in dendrophyte diversity due to planting materialproduced within the region is 212 cultivars adapted to local conditions.Given the potential and available resources, it is proposed to update the range of cultivars for street plantings to include 278 most suitable species, which are listed in the Recommendations for expanding therange of trees, shrubs and vines for street plantings Poltava Geobotanical District, 67 of them are offeredfor the first time. The formed list contains species, forms and varieties adapted to local conditions, takesinto account their bio-ecological features, results of introductory research, features of urban settlements, decorativeness and safety for the population. The recommendations also provide brief agronomic advice on growing 23 promising species of aboriginal flora and introducers. |
