Communities of the Molinio-Arrhenatheretea class in the Biysk-Chumysh Upland region (Altai Krai)

N.V Ovcharova,A.V Matsyura

doi:10.15421/2020_227

Abstract

The article reveals the study of the syntaxonomic diversity of meadow vegetation in the Biysk-Chumysh Upland region (Altai Krai) based on the analysis of 230 complete geobotanical descriptions. The levels of hydration and use (grazing, idle land) are proved to be the main ecological factors. The variety of the Molinio-Arrhenatheretea class in the Biysk-Chumysh Upland (Altai Krai) is represented by three orders. The Molinietalia order is representative of wet meadows, whose floristic composition is mostly comprised of water resistant species. The Arrhenatheretalia order is representative of well-hydrated meadows. The Galietalia veri encompasses the communities of steppe meadows, the cenoflora of which unites the species of true meadows and meadow steppes.

Highlights

The Biysk-Chumysh Upland is divided by a well-developed valley-ravine network and has the characteristics of an undulating plain, the height of which gradually increases from 280-300 m in the north to 350-400 m in the south
The meadow phytocenoses of the Molinio-Arrhenatheretea class are represented by three orders (Molinietalia, Arrhenatheretalia, Galietalia veri), which comprise wet, true and steppe meadows, respectively
The Molinietalia order encompasses wet meadows, which are mostly formed in the northern part of the Biysk-Chumysh Upland, in the floristic composition of which water-resistant species predominate

Summary

Introduction

The Biysk-Chumysh Upland is divided by a well-developed valley-ravine network and has the characteristics of an undulating plain, the height of which gradually increases from 280-300 m in the north to 350-400 m in the south. The well-drained territory of the Biysk-Chumysh Upland is the reason for the development of a relatively homogeneous soil cover with very strict and simple interdigitation of soil varieties along the relief elements (zonal soil type on watersheds; hydromorphic types in the valleys; forest soils or eroded variants of zonal soil type along the slopes of erosive forms) (Kravtsova, 1959; Omelyanov, 1973). The information on the vegetation of the Biysk-Chumysh Upland (within the territory of Altai Krai) is scarce and is covered in the works of P. According to the scheme of the geobotanical zoning of Altai Krai (Aleksandrova, Guricheva, Ivanina, 1958), the territory under study belongs to the subzone of the middle forest steppe on leached chernozems and gray forest soils. The purpose of this work was to identify the syntaxonomic diversity of vegetation of the Molinio-Arrhenatheretea class on the BiyskChumysh Upland (Altai Krai)

Objectives

Methods

Results

Conclusion