DYNAMICS OF COENOPOPULATIONS AND DISTRIBUTION ASCLEPIAS SYRIACA L. IN VARIOUS HABITATS OF AGRICULTURAL LANDSCAPES AND ADJACENT LANDS IN CENTRAL RUSSIA

Asclepias syriaca L. is species-introduced with high potential as a source of biofuel, an important fodder crop for beekeeping, possible biologically active substances. However, the species has invasive activity and may pose threat to biodiversity natural plant communities. And also economic agroecosystems segetal species. In agricultural landscapes central Russia in various habitats dynamics state coenopopulation introduced A. syriaca, which hazard at this moment, was studied. Research conducted 2012, 2018 2019 Belgorod region near village Kulma, Novooskolskiy urban district. To assess distribution 2012 polygon formed stationary observations on area about 5000 ha called Stationary "Kulma". Modular coenopopulations growing were identified within stationary. process research conditions agrophytocenoses adjacent lands South Central Russian upland there tendency increase populations but A wide range habitats. The fact into zonal types steppe vegetation its share phytocenoses further displacement native by it established. agrophytocenoses, forms stable full-fledged seed productivity aboveground phytomass, are most productive ecotone bayrach forests, forest belts fallow lands. ability introduce cultivated land, makes extremely dangerous component communities Chernozem region, capable causing significant damage. It necessary monitor population all regions develop measures prevent widespread agrophytocenoses.