Опыт использования ГИС при оценке природоохранной ценности городских лесов (на примере парка «Савин Наволок», г. Петрозаводск, Республика Карелия)

Abstract

The information about the state and nature conservation value of the recreational forests of the Savin Navolok Park is presented. Maps of vegetation and localization of rare and protected species of vascular plants, mosses, lichens and fungi have been compiled. Nine types of forest have been identified in the Park where birch herb-rich forests (31.8 %), spruce forests (25.2 %), and pine forests (16.3 %) prevail. About a quarter of the studied territory (25.6 %) is covered by mixed coniferous-deciduous forests, aspen and willow forests. The flora of the Park is characterized by high species diversity: 258 species of vascular plants, 40 species of mosses and 45 species of lichens have been identified. In comparison with adjacent territories, distinctive feature of the studied flora is the presence of a large number of species of the southern taiga subzone (19.7 %), including nemoral species on the northern border of their distribution range (Corydalis solida, Pulmonaria obscura, Tilia cordata, etc.). In the Savin Navolok Park, 8 species protected in the Republic of Karelia are registered: Galium odoratum, Humulus lupulus, Lentaria afflata, Neckera pennata, Punctularia strigosozonata, Thalictrum kemens, among which species Calypso bulbosa and Cypripedium calceolus are listed in the Red Data Book of Russian Federation. Species Chaenotheca brachypoda and Ulmus glabra are included in the list of taxa of the Republic of Karelia that need special attention to their state in the natural environment and are recommended for biological surveillance. According to the Federal Law “On Specially Protected Natural Areas”, the natural complexes of the Savin Navolok Park satisfies the criteria for give this territory the status of a specially protected natural area in the rank of a natural monument or a state botanical reserve of regional significance “Savin Navolok”.