Urbanization influences the structure and composition of the vegetation of a region, reduces the number of species, species with a narrow ecological range disappear, non-native species show their invasive character, etc. As a result of the changes, new forms of isolated species appear, their specific features are established. According to the author Boboc N., the Balti urban ecosystem, from a physical-geographical point of view is located in the Steppe Plain of the Lower Cubolte, which is part of the Bălți Steppe district, being located at the border to the physical-geographic subregion of the Steppe Hills of Ciulucurilor (B2), and from the geomorphological point of view, the study area is characterized by a weak hilly relief of a large amphitheater with strongly raised sides, formed by the bed of the Răut river. The vegetal biological diversity of the Balti urban ecosystem demonstrated that the flora of this ecosystem is obviously different from the typical spontaneous zonal flora of the steppes. Field research during the vegetation period of 2020-2022 were carried out based on the floristic study of 13 resorts established in the Balti city. The assessment of the floristic diversity was realized out by the method of linear transects. In order to assess the productive potential of herbaceous plants within the Balti urboecosystem, phytocenological eradications were carried out from 8 sites, using the quadrat method. The determination of superior plant species was carried out according to specialized works. The floristic spectrum, in the resorts of Balti, is represented by 149 species, grouped into 114 genera from 37 families of magnoliophytes. The most representative in the Balti urban ecosystem are the Asteraceae and Poaceae families, with 35 and 22 species respectively. In most of the researched stations, the degree of coverage is 95–100%. The analysis of the biological indices of the species in the researched sites revealed: ruderal species 47%, spontaneous species 39% and segetal-ruderal 14%. The maximum percentage belongs to ruderal and segetal-ruderal species, which demonstrates a high degree of anthropization of the Balti urban ecosystem. An indicator that provides information about the state and capacity of the ecosystem is net green phytomass. The amount of phytomass contributes to the productivity and sustainability of the ecosystem, being also dependent on a series of conditions: climatic, ecological, pedological, geographical, but also depend on the anthropic factor. The results show us that in the sites, where the intense activity of the anthropic factor persists, the reduced productivity of the grassy layer is attested. The floristic study indicates that the flora of this ecosystem was formed by the way of the permeated of spontaneous autochthonous species, which adapted to the conditions of the urboecosystem, and of allochthonous species, which penetrated the territory of the Republic of Moldova in different ways.