TIN CONTENT IN THE SOIL-VEGETATION COVER OF THE EASTERN PART OF ISSYK-KUL REGION
Keywords:
tin; trace elements; content; soil; plant; tin ore depositsAbstract
The article presents the results of the accumulation levels of tin and associated trace elements in the soil-vegetation cover of the natural-technogenic ecosystems of the eastern part of the Issyk-Kul Region. A total of 36 soil and 24 plant samples collected from sites with various geomorphological and geochemical characteristics were analyzed. The determination of trace element content was carried out using the method of emission spectral analysis. To assess the degree of contamination, commonly accepted geochemical indicators were applied: contamination factor (CF), geoaccumulation index (I_geo), enrichment factor (EF), pollution load index (PLI), and potential ecological risk index (PER). Statistical data processing was performed using StataMP-64 software. The results of the study showed that the tin content in most soil samples varies within background values, and the calculated indices indicate the absence of technogenic pollution and a low level of ecological risk. In the high-mountain zone of the Sary-Jaz River basin, local enrichment of soils with copper, molybdenum, zinc, and cobalt was revealed, which is associated with the natural geochemical features of the parent rocks. Despite the presence of tin ore deposits, the concentrations of tin in the soil are relatively low, its migration into plants is limited, indicating low bioavailability and a weak tendency to transform into forms accessible to plants.
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