Ординация геоботанических описаний растительности железнодорожных насыпей Курской области

Abstract

Classification of the plant communities developed on the railway embankments in Kursk region according to Braun-Blanquet approach is based upon 120 relevés. Syntaxonomy of railway embankment vegetation in Kursk region includes 3 classes of sinantropic vegetation: Digitario sanguinalis-Eragrostietea minoris, Sisymbrietea, Artemisietea vulgaris. DCA-ordination of geobotanical relevés showed that some ecological factors, such as the degree of anthropogenic influence on plant communities, moisture and wealth by mineral nitrogen of substrates are important in differentiation of the vegetation on the railway embankments. The influence of these factors differs on railroad tracks, slopes and nearby sites. This determines the location on а railway embankment of plant communities belonging to different higher syntaxa.