Effect of zinc as an adverse ecological factor on the herbaceous plants of urban ecosystems

One of the priority pollutants of soils among heavy metals in many regions of Russia is zinc. Urban herbaceous plants are sensitive to soil contamination with zinc. As objects of research, decorative plants were used: Agrostis stolonifera, Trifolium repens, Brachycome iberidifolia, Godetia grandiflora, which are used in urban greening. The absence of a significant inhibitory effect of zinc was observed with a content of 60-80 mg / l in aqueous solutions and 80 mg/ kg in soil. Growth inhibition exceeded 25% with a zinc content of 100 mg / kg in the soil (less than approximate permissible concentration (APK) for most species. Thus, some of the ornamental plants have a relatively low degree of zinc resistance.