Floristic composition and ordination analysis of segetal vegetation of the Northern Azov region (Russia)

The article considers the study of segetal vegetation of agrophytocenoses of grain crops of the Northern Azov region and identifies the ecological patterns of its distribution using ordination and ecological and floral classification. The basis of the work is the materials of field research on winter wheat and spring barley crops. Based on the collected data, the analysis of the position of plant communities on the axes of environmental factors was carried out and the most effective methods of indirect ordination applicable in the study of the ecology of segetal communities were determined. The comparison of the floristic composition of the isolated communities with the diagnostic species and floristic composition of the previously described syntaxons of segetal vegetation of Russia and neighboring countries is carried out. Keywords: SEGETAL VEGETATION, GRAIN CROPS, PLANT COMMUNITIES, ECOLOGICAL AND FLORISTIC CLASSIFICATION, ECOLOGICAL MODEL, ORDINATION ANALYSIS