Parameters of microorganisms numerosity in diagnostics of cryosolic black earth pollution by heavy metals

Results of modeling experiment have shown, that at pollution of cryosolic black earth by heavy metals of Cu, Zn, Pb and Cd in dozes from 0,5 up to 30 maximum concentration limits numerosity of microorganisms steadily goes down. On toxicity concerning bacteria heavy metals form a line: (Cu+Zn+Pb+Cd)> Cd> Pb> Zn> Cu; on toxicity concerning mushrooms line looks like: (Cu+Zn+Pb+Cd)> Pb> Cu> Cd> Zn. For biological indication of cryosolic black earth pollution by heavy metals it is expedient to use numerosity of heterotropheous bacteria.