Академическое издательство «Гео»

Keywords: soil pollution, fractional composition of soils, mobile forms, elemental composition of vegetation, accumulation coefficients, biogeochemical parameters.



GEOGRAPHY AND NATURAL RESOURCES, 2016, № 3, p. 62-69

Distribution and migrationof toxicant elements in the soil–plant system on the Albynskoe gold ore deposit (Amurskayaoblast)

V.I. Radomskaya*, S.M. Radomskii*, E.N. Kulik**, and L.M. Pavlova*

*radomskaya@ascnet.ru, rsm@ascnet.ru, pav@ascnet.ru
**elenk70@mail.ru

We assessed the content levels of toxicant elements that have a different hazard class, in soils and in the aerial part of plants in natural landscapes and on the territory of open-cast gold mining (Albynskoe gold ore deposit, Amurskaya oblast). It is established that during three years of operation of the mine there occurred in the soil an increase in total concentrations of Pb, V, Zn and As with respect to the background level through an increase in content of the group of unstably bound compounds of these elements. The activity of the mine, coupled with a considerable dust load, leads to transformations in the series of accumulation of elements, and to clearly pronounced changes in their relationships in dry mass of vegetation. The vegetation biomass on the mine showed separate chemical elements whose concentrations reflect an accumulation of toxicants: the content levels of As, Mo, Cd and Sb exceed the background values by factors of 3 to 3,6, and V, Co and Ni by factors of 2 to 2,4. A deterioration of the state of vegetation is evidenced by a change of the Fe/Mn and Pb/Mn ratios. The indicator of the Pb/Mn ratio in vegetation exceeds the background value by factors of 3 to 5, and for clover by a factor of 32. Analysis of biogeochemical parameters of soils and plants (calculations of anomaly parameters and content levels of mobile forms of elements in the soil, the accumulation indicators as well as the values of the ratio of elements in plants) showed that the environment on the territory of the mine is experiencing an ecological stress in connection with open-cast mining operations.

Keywords: soil pollution, fractional composition of soils, mobile forms, elemental composition of vegetation, accumulation coefficients, biogeochemical parameters.

DOI: 10.21782/GiPR0206-1619-2016-3(62-69)

главная

www.izdatgeo.ru