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Bio-geo-chemical migration of micro-elements in arid ecosystems of Kalmykia

Annotation

The concentrations of heavy metals (Cr, Co, Ni, Cu, Zn, Cd, Pb) in the soil of Kalmykia and their subsequent distribution over the food chain (plant fodder – sheep) are investigаtеd. It was revealed that the highest biogenic accumulation is characteristic of Zn and Cu at all the levels of food chain. An increase in the transition of coefficients for the most toxic elements Pb, Cd is observed, which is an evidence of their accumulation in the higher levels of food chain.

Keywords

soils; plant fodder; food chain; heavy metals.

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UDC

541.504.06

Pages

1007-1010

References

1. Kabata-Pendias A., Pendias Kh. Mikroelementy v pochvakh i rasteniyakh. M.: Mir, 1989. 459 s. 2. Orlov D.S., Sadovnikova L.K., Lozanovskaya I.N. Ekologiya i okhrana biosfery pri khimicheskom zagryaznenii. M.: Vysshaya shkola, 2002. 334 s. 3. Sangadzhieva L.Kh. Mikroelementy v landshaftakh Kalmykii i biogeokhimicheskoe rayonirovanie ee territorii. Elista: Dzhangr, 2004. 119 s. 4. Sangadzhieva L.Kh. Faktory i mekhanizmy antropogennoy transformatsii landshaftov Respubliki Kalmykiya na osnove biogeokhimicheskogo analiza ikh ustoychivosti. Saratov, 2006. 420 s. 5. Mineev V.G. Problemy tyazhelykh metallov v sovremennom zemledelii // Tyazhelye metally i radionuklidy v agroekosistemakh: materialy nauch.-prakt. konf. M., 1994. S. 5-11.

Received

2012.09.03

Section of issue

Biogeochemistry: yesterday, today, tomorrow

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