Vestnik of Orenburg State Pedagogical University. Electronic Scientific Journal. 2020. № 4(36). P. 209—220
03.00.00 BIOLOGICAL SCIENCES
UDC 581.9(571.12)
Kharitontsev Boris Stepanovich, Doctor of Biological Sciences, Associate Professor
Tobol Complex Scientific Station of the Ural Branch of the Russian Academy of Sciences Allayarova Venera Robertovna, Postgraduate student
Tobol Complex Scientific Station of the Ural Branch of the Russian Academy of Sciences
FEATURES OF STEPPIFICATION PROCESSES IN THE IRTYSH VALLEY WITHIN THE TOBOLSK DISTRICT OF THE TYUMEN REGION
Abstract
The steppe formation is characterized by both the penetration of steppe species into a certain territory and the formation of plant communities typical of the steppe zone. This process is usually extrazonal. The Irtysh Valley within the Tobolsk district, including the indigenous coast, floodplain and left-bank terraces is undergoing steppification under the influence of the steppe zone of the south of Western Siberia. The vegetation and flora of the insulated sections of the indigenous coast (9 descriptions) and the Left Bank (1 description) of the Irtysh have been studied. The following steppe associations have been identified: Cotoneasterum rososum, Stipetum gallatellosum, Elytrigetum veronicosum, Allietum artemiosum, Stipetum origanosum, Spiretum graminosum, Artemisetum fragariosum, Potentilletum artemiosum, Anemonetum trifoliosum. The participation of typical steppe feather grass (Stipa capillata L., etc.), wormwood (Artemisia glauca Pall. ex Willd., etc.), Potentilla (Potentilla nudicaulis Willd. ex Schltdl., etc.) indicates the autochthonous nature of these steppe areas with complex a picture of their genesis.
Key words
Steppification, valley of the Irtysh River, southern taiga, plant communities, steppe species, Pleistocene, Tobolsk district, Tyumen region.
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Bibliography link to this article:
Kharitontsev B. S., Allayarova V. R. Features of steppification processes in the Irtysh valley within the Tobolsk district of the Tyumen region. Vestnik of Orenburg State Pedagogical University. Electronic Scientific Journal, 2020, no. 4 (36), pp. 209—220. DOI: https://doi.org/10.32516/2303-9922.2020.36.11.