Академическое издательство «Гео»

Keywords: soil ecology, ecological geochemistry, environmental geochemistry, heavy metals, trace elements, absolute dispersal of chemical elements.



GEOGRAPHY AND NATURAL RESOURCES, 2016, № 3, p. 26-36

The influence of the size of settlements onurban soil pollution

V.A. Alekseenko*,**,***, V.V. Rudskii****, and A.V. Alekseenko*****

*vl.al.alekseenko@gmail.com
**vl.al.alekseenko@gmail.com
***vl.al.alekseenko@gmail, com, rudsky@mail.ru
****al.vl.alekseenko@gmail.com

A study is made of the geochemical state of soils for more than 300 settlements. A sampling inspection, and also an internal and external inspection of analyses have been carried out. Regular and control analyses were made in certified and accredited laboratories, including in the arbitration laboratory. Based on summarized data, we examine the influence of a city’s size on soil pollution processes. Quantitative information on accumulation of metals by soils in settlements of different categories is given. For the cities, grouped together according to the number of inhabitants, we determined not only the concentrations of separate elements in soils but also the particular ecological significance of pollution. It is found that the highest (in mass) content level of metals when compared to the percentage abundance (clarke) of the Earth’s soils is characteristic for the soil cover of cities with the population of 300–700 thousand and less than 100 thousand as well as for recreational-touristic centers. We consider the ecological hazard of accumulation of chemical elements in soils and the primary role of Pb and Zn as the contaminant elements in all the groups of cities. It is pointed out the soils are accumulating significant concentrations of Cd, Co and Ca which alter considerably the ecologo-geochemical situation in urban landscapes. It is concluded that such elements as As, Cu and Cl are the key ecologo-geochemical pollutants in four groups of settlements. We identified the groups of settlements differing in the values of absolute dispersal of concentrations of chemical elements.

Keywords: soil ecology, ecological geochemistry, environmental geochemistry, heavy metals, trace elements, absolute dispersal of chemical elements.

DOI: 10.21782/GiPR0206-1619-2016-3(26-36)

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