Ecological and Biological Features of the Distribution of the Siberian Apricot ( Prunus sibirica L.) in the Southern Par
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EMATIC STUDY OF ARID TERRITORIES
Ecological and Biological Features of the Distribution of the Siberian Apricot (Prunus sibirica L.) in the Southern Part of the Selenga River Basin S. N. Bazhaa, *, T. G. Baskhaevab, **, E. V. Danzhalovaa, Yu. I. Drobysheva, L. A. Ivanovc, ***, L. A. Ivanovac, S. V. Migalinac, Yu. A. Rupyshevd, ****, V. I. Ubugunovad, E. A. Bogdanova, S. Khadbaatare, *****, E. G. Tsyrempilovd, G. Tserenkhandf, and T. Shinekhuug, ****** a
Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, 119071 Russia bBuryat State University, Ulan-Ude, 670000 Russia c Botanical Garden, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620144 Russia dInstitute of General and Experimental Biology, Siberian Branch, Russian Academy of Sciences, Ulan-Ude, 670047 Russia eMongolian State University of Education, Ulan Bator, 2106489 Mongolia fInstitute of Botany of the Academy of Sciences of Mongolia, Ulan Bator, 210351 Mongolia gUral Federal University, Yekaterinburg, 620002 Russia *e-mail: [email protected] **e-mail:[email protected] ***e-mail: [email protected] ****e-mail: [email protected] *****e-mail: [email protected] ******e-mail: [email protected] Received March 20, 2020; revised April 29, 2020; accepted April 30, 2020
Abstract—The features of the distribution of the Siberian apricot (Prunus sibirica L.) in the southern (Mongolian) part of the Selenga river basin is discussed. It was found that there is a clear trend in the successional change of pine forests to shrubby vegetation represented by Siberian apricot communities. This trend is facilitated by the reduction in forest area after fires, felling, and grazing, which, in turn, leads to the change in the landscape and ecological conditions in forest ecotopes. In addition, the coenotic positions of Prunus sibirica are strengthened because of its physiological and biochemical adaptation to the pyrogenic factor, its consumption by livestock, and the variability of the functional parameters of the species. Keywords: Prunus sibirica L., Mongolia, forest–steppe, deforestation, overgrowth, postforest succession, functional features of plants DOI: 10.1134/S2079096120040022
INTRODUCTION The Siberian apricot (Prunus sibirica L.1) is a nemoral relic of the Tertiary period. It is the northernmost and hardiest representative of the small section Armeniaca (which originates from China and central Asia) of the Prunus genus (Flora SSSR, 1941; Reshchikov, 1958; Peshkova, 2001; Bukharova, 2007; The Plant List, 2013). It is a small tree or shrub up to the 3 m high with splayed branches (Flora SSSR, 1941; Koropachinskii and Vstovskaya, 2002). P. sibirica is a Dauro–Mongol–Manchu–northern Chinese species. Its area is sharply disjunctive and 1 Latin
names of plants are given according to The Global Biodiversity Information Facility (2020).
stretches from Transbaikalia (Selenginskaya and Nerchinskaya Dauria) through northern, eastern, and southeastern Mongolia up to Manchuria (the Songhua River basin) and the South Ussuriysk Territory, ski
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