The species and biomorph  structure of the grass vegetation of the Buiucani industrial platform (Chişinău) has been studied. The influence of havie metalsm (Cu²⁺, Zn²⁺, Pb²⁺, Cr³⁺) in the soil on the diversity value index Q (species number), K (samples number), M (dry mass) of the vegetable cover species composition has been analyzed. Optimal concentrations of the havie metals (Cu²⁺, Zn²⁺, Pb²⁺, Cr³⁺) for the develompment of dominant grass biomorphs have been determined. The biomorph consequence in the industrial platform ecosystems has been established as follows: (biomorphes/quantities,%): Geophytes 40-75˃Hemicriptophyte 10-30˃Terophyte 7-25˃Hemyterrophytes 7-15.