Assessment of the prospects of decorative forms and varieties of mountain pine (Pinus mugo) for greening of Siberian cities

The article concludes the issues of expanding the range of woody plants for greening the territory of Siberia and the sustainable formation of the urban environment using the example of the city of Bratsk. As a result, studies were carried out on the prospects of various forms and varieties of mountain pine for use in green construction and expanding the floristic diversity of cities and towns in Siberia. More than 200 specimens of mountain pine of different ages, in different growing conditions, belonging to 17 varieties and small forms of the species were examined. The research into the prospects of mountain pines was carried out from 2015 to 2023 in different areas of urban development, in green areas of various types and purposes. A large number of private collections of dendrointroducers were also examined in country houses, garden plots, and cottage plots. Private gardens in the absence of special scientific institutions offer ample opportunities for introduction studies of many foreign species. During many years of research, the degree of ripening of shoots of forms and varieties of mountain pine, winter hardiness, resistance to sunburn in early spring, ability to reproduce were determined, morphometric data of the studied specimens was collected and systematized, quantitative indicators of annual growth of shoots, which characterize the condition and prospects for the use  of these varieties and forms for landscaping the cities of Siberia were studied. The article provides data on the use of mountain pine in different growing conditions and use in various types of plantings. During the study, a classification  of life forms of mountain pines was developed, which subdivides all studied forms and varieties into full-sized, mediumsized, dwarf and miniature shrubs. This classification most accurately reflects the variational range of biomorphological characteristics of modern mountain pine varieties. Based on the analysis of the indicators of the integral assessment of the success of introduction, each form and variety was assigned a certain class of prospects, characterizing their use in green building. The forms and cultivars that received a high class of prospects as a result of the study are recommended for use in various forms of urban landscaping and private gardening in summer cottages and household plots.

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