Change of concentration of hard metals in soils of the Caspian seaside in conditions of cattle breeding processes
The processes of flooding on the territory of the Western Caspian seaside on soils and bottom sediments brought to noticeable geo-chemical changes, resulted in rise of the contents of hard metal - Cd, Cr, Ni, Pb, Rb, Sr, Zr, on 1.46 times of their average contents in flooded meadow and meadow-swampy soils. Herewith Ni, Cd, Pb, Sr mainly accumulate. In humus containing (0-5 cm) thick layer of flooded soil the contents of hard elements are 1.43 times higher, in lower soil profile (60-120 m) on 1.53 times higher than in non-flooded soils since organic matter has higher accumulative ability for hard metals. Periodic flooding by sea water of the coastal territory though intails in rise of hard metal concentration in soils and coastal landscapes, but it does not have over negative influence. Soil cover of the Western Caspian sea coastal zone is characterized by low hard metals concentration.