| Article |
|---|
| Article name |
Assessment of the Ecological and Geochemical State of Soils Contaminated with Heavy Metals Using Integral Indicators |
| Authors |
Afonina T.E. Doctor of Geography, Professor, Land Management, Cadastre and Agricultural Land Reclamation department, bf-vniprirodi@narod.ru |
| Bibliographic description |
Afonina T. E. Assessment of the Ecological and Geochemical State of Soils Contaminated with Heavy Metals by Integral Indicators // Transbaikal State University Journal. 2025. Vol. 31, no. 2. P. 30–40. DOI: 10.21209/2227-9245-2025-31-2-30-40 |
| Category |
Earth and Environmental Sciences |
| DOI |
502.521:628.54 |
| DOI |
10.21209/2227-9245-2025-31-2-30-40 |
| Article type |
Original article |
| Annotation |
The article considers the ecological and geochemical state of soils in agricultural areas of the Irkutsk region. The ecological and geochemical state was assessed based on soil contamination with heavy metals using the integral index Zc, which characterizes the level of contamination hazard and allows obtaining relatively reliable ideas about the accumulation of heavy metals in soils. From this point of view, the relevance of this article is beyond doubt. The object of the study was soils selected from different agricultural lands in the main agricultural areas of the Irkutsk region. The aim of the study was to assess the ecological and geochemical state of soils contaminated with heavy metals using the integral index Zc. The main objectives were to determine the degree of contamination of agricultural lands with heavy metals. The methodological approach was based on scientific research in the field of “technogenesis-biosphere” by V. I. Vernadsky, A. I. Perelman, V. V. Dobrovolsky, in the field of the influence of heavy metals on the ecological and geochemical state of landscapes by M. A. Glazovskaya, V. A. Kovda, Yu. N. Vodyanitsky. The study material included soil samples taken from different agricultural lands: arable land, pasture, meadow. The soils were tested for heavy metal content using methods M 02-902-125-2005 and M-MVI-80-2008, RD 52.18.289-90. The ecological and geochemical state of soils was assessed based on the content of heavy metals in mobile and gross forms. The study results showed that the causes of agricultural land pollution in the areas are industrial emissions from enterprises. Based on the results obtained, the integral indicator Zc was determined, which made it possible to assess the current level of soil pollution on various agricultural lands in the main agricultural areas of the Irkutsk region. The results obtained allowed to conclude that the level of soil pollution in agricultural lands affected by industrial emissions from enterprises ranges from highly hazardous to moderately hazardous. The main source of toxic substances entering the soil from industrial enterprises is the deposition of gas and dust emissions.
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| Key words |
integral indicator, pollution levels, heavy metals, soil, pollution sources, assessment, ecological and geochemical state, lands, load, analysis
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| Article information |
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| References |
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