Genesis of secondary vegetable communities of post agrogenic plakor landscapes (Meshchovskoe Opolye)

Abstract

The article shows the dependence of the composition of synanthropic plant communities of postagrogenic landscapes in the agroclimatic conditions of the Central regions of the Nonchernozem zone of the Russian Federation (Meshchovskoe opolye) on agroclimatic conditions, the composition of the segetal complex of agrophytocenoses and agricultural technologies used for cultivation, the influence of anemochoric inspection and episodic pyrogenic disasters. Tap-root and rhizome species of segetal plants are predominantly involved in the development of fallows; the highest density of formations and accumulation of the phytomass of communities is observed in May – June, which is influenced by the frequency of occurrence, productivity, and specific area of dominant plant species. It has been established that the floristic core includes 214 species of higher herbaceous plants that determine the productivity and potential food value of secondary meadow communities, including invasive species that have an adaptive potential to zonal ecological and soil conditions. The placement of agrophytocenoses of oats during the development of middle-aged cereal-legume meadow phytocenoses with a share of legumes in the structure of up to 35% contributes to an increase in the yield of grain fodder by an average of 9.3% and an increase in the collection of metabolic energy by 11.1%.