VEGETATION OF THE STOW "PEONY STEPPE" (ULYANOVSK REGION)
S.A. Senator1, V.M. Vasjukov2, L.A. Novikova3, A.E. Mitroshenkova4, N.S. Rakov2, S.V. Saksonov2
1Tsitsyn Main Botanical Garden N.V. Tsitsyn, RAS, 4, Botanicheskaya str., Moscow, 127276, Russia
stsenator@yandex.ru
2Samara Federal Research Center of the RAS, Institute of Ecology of the Volga River Basin of the RAS, 10, Komzina str., Tolliatti, 445003, Russia
3Penza State University, 40, Krasnaya str., Penza, 440026, Russia
4Samara State Academy of Social Sciences and Humanities, 26, Antonova-Ovseenko str., Samara, 443090, Russia
Keywords: flora, rare steppe communities, Red Data Book, valuable botanical object, Ulyanovsk region
Abstract
The data on the vegetation of a valuable botanical object “Peony steppe” are presented. The stow is located in the vicinities of the village Belogorovka (Radischevskiy district of Ulyanovsk region) and is proposed for inclusion in the regional network of protected areas. In the structure of the vegetation cover the patterns of rare plant communities distribution were revealed depending on the main geomorphological and edaphic factors: semi-shrub calciferous steppes were more oft en confined to the tops and upper parts of the slopes; feather-grass and herbaceous calciphyte steppes were developed in the middle and lower parts of the slopes; restoration of many rare species of different herbaceous steppes is often carried out with some disturbance. Flora of the stow “Peony steppe” contains 248 species of vascular plants, including 9 species listed in Red Data Book of the Russian Federation: Fritillaria ruthenica , Globularia punctata , Hedysarum grandifl orum , Iris aphylla , I. pumila , Paeonia tenuifolia , Stipa pennata , S. pulcherrima , Th ymus dubjanskyi ( Th . cimicinus auct. p. max. p.) and more than 20 species listed in Red Data Book of the Ulyanovsk region: Adonanthe vernalis , Alyssum lenense , Asperula exasperata , Astragalus cornutus , Cephalaria uralensis , Euphorbia pseudagraria , Goniolimon elatum , Helictotrichon desertorum , Linum perenne , Polygala sibirica , Scabiosa isetensis , Stipa korshinskyi et al. The stow is characterized by presence of rare calcifi c steppe and forest vegetation including community with Paeonia tenuifolia .
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