Patterns of Sandy Steppe Vegetation in the Valleys of the Samara and Ural Rivers and Their Inflows (Orenburg Region)
A. Yu. KOROLYUK1, N. A. DULEPOVA1, S. M. YAMALOV2, M. V. LEBEDEVA2, Ya. M. GOLOVANOV2, A. A. ZVEREV3
1Central Siberian Botanical Garden, SB RAS, 630090, Novosibirsk, Zolotodolinskaya str., 101
2Botanical Garden-Institute, USC RAS, 450080, Ufa, Mendeleev str., 195/3
3Тomsk State University, 634050, Tomsk, Lenin ave., 36
Keywords: растительность, псаммофиты, Оренбургская обл, кластерный анализ, ординация, vegetation, psammophytes, Orenburg Region, cluster analysis, ordination
Abstract
The organization of psammophytic vegetation of Orenburg Region was studied. A cluster analysis with 6 similarity indices of the data set of 122 relevés comprising the sandy steppe vegetation was performed. The usage of Sokal - Sneath coefficient gave better differentiation of clusters. As a result 5 plant communities were distinguished and characterized. To analyze the data structure, a canonical correspondence analysis (CCA) was used. It allowed to evaluate the role of anthropogenic transformation and geographical differences in the organization of psammophytic vegetation.
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