The Limits of Resistance of Soils and Ecosystems of Crimea to Heavy Metals Pollution

A study is carried out to determine the limits of resistance of soils and ecosystems of Crimea to pollution of Pb, Cr, Cu, Ni by biological indicators. It is established that the Crimean soil in terms of resistance to Pb, Cr, Cu, Ni pollution is located as follows: residual carbonate chernozems> southern chernozems> dark chestnut alkaline ≥ mountain meadow ≥ brown carbonate> brown forest soils, and terrestrial ecosystems have the following series of stability: true steppes> dry steppes ≥ mountain meadows ≥ light forests> broad-leaved forests. In terms of ecotoxicity to heavy soils and ecosystems of Crimea, heavy metals form a series: Cr> Cu ≥ Pb ≥ Ni. The regional standards of the maximum permissible content of Pb, Cr, Cu, Ni in the main soils of the Crimea and the most effective ways of their rehabilitation in case of pollution are proposed.

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