FORMATION OF THE CENOTIC STRUCTURE OF THE FLORA OF PINE FORESTS OF THE RUSSIAN PLAIN DEPENDING ON THE ZONAL AFFILIATION OF SPECIES

Kin N.

RJEE Vol. 8 (1). 2023 | DOI: 10.21685/2500-0578-2023-1-5
Abstract | PDF (Rus) | Additional files

Receipt date 12.11.2022 | Publication date 26.03.2023

 

FORMATION OF THE CENOTIC STRUCTURE OF THE FLORA OF PINE FORESTS OF THE RUSSIAN PLAIN DEPENDING ON THE ZONAL AFFILIATION OF SPECIES

 

N.O. Kin
Institute of Steppe Ural Branch of Russian Academy of Sciences, Orenburg, Russia
kin_no@mail.ru

 

Abstract. Background. The steppe and forest-steppe pine forests are represented by an extra-zonal vegetation type. Boreal and nemoral species in the flora of pine forests are not characteristic of subarid territories. The purpose: to reveal the distribution of species of various zonal groups in cenotic complexes of the flora of pine forests of the Russian Plain. Materials and methods. Floristic research covered 4 pine forests: Usmansky and Khrenovskoy – in the typical forest-steppe Oka-Don lowland; Krasnosamarsky and Buzuluksky – in the steppe zone of Zavolzhye. For each species belonging to ecological-cenotic and latitudinal-geographical group is established. The formation of the cenotic structure depending on zonal affiliation is considered for the native fraction of the flora of the studied pine forests. Results. In spite of the significant number of boreal and nemoral species in the floras of the studied pine forests, their distribution in the pine forest cenoses is limited. As the humidity of landscapes increases, plurizonal species become more important in the composition of their cenoses. Steppe species are rare in most cenotic complexes, with the exception of the steppe. Conclusions. The number of species participating in the composition of latitudinal-geographic groups and forming the cenotic structure of the floras of pine forests of the Russian Plain depends on the zonal features of their location. Nevertheless, the proportion participation of latitudinal groups in the composition of cenotic components in the flora of the pine forests under study is almost the same.

 

Keywords: flora of pine forests, southern border of Pinus sylvestris L., cenotic complexes, latitudinal and geographic groups

 

Financing: the study was carried out as part of the research work of the Official Research Center of the Ural Branch of the Russian Academy of Sciences (Institute of Steppe Ural Branch of Russian Academy of Sciences) “Problems of steppe nature management in the face of modern challenges: optimization of the interaction of natural and socio-economic systems”, No. ГР АААА–А21–121011190016-1.

 

For citation: Kin N.O. Formation of the cenotic structure of the flora of pine forests of the Russian plain depending on the zonal affiliation of species. Russian Journal of Ecosystem Ecology. 2022;8(1). (In Russ.). Available from: https://doi.org/10.21685/2500-0578-2023-1-5