Spontaneous lawn flora of Rostov-on-Don
In the conditions of urban ecosystems, the areas designed for lawns are closest to natural ecotopes and serve as a habitat for a large number of plant species, the composition of which varies depending on a number of factors. The object of the study was the species of herbaceous plants that formed spontaneous communities in areas intended for lawn covering, on urban facilities in the central part of Rostov-on-Don. A total of 96 vascular plant species from 79 genera and 22 families were registered. The analysis of life forms ratio showed a slight predominance of plant species with a short life cycle. The ecological analysis of flora indicates a tendency for mesophytization: the mesomorphic group accounts for 75% of the total number of species. Arealogical analysis shows the spontaneous nature of the formation of the flora of urban lawns; in terms of phytocoenotic classification, weed species are in the first place. Spontaneous lawn flora of Rostov-on-Don approaches the zonal anthropogenically transformed type of steppe flora.