Geochemical assessment of iron and manganese accumulation in woody and herbaceous vegetation of forest ecosystems, Northeast Kazakhstan
Zhumadina S. Izbastina K. Karabalayeva A. Shakeneva D. Daribay T. Kurmanova A. Kozhamzharova L. Mukhtubayeva S.
October 2025University of Guilan
Caspian Journal of Environmental Sciences
2025#23Issue 4861 - 870 pp.
The article presents the results of a comprehensive geochemical assessment of the iron (Fe) and manganese (Mn) accumulation in woody and herbaceous vegetation of forest ecosystems in the North-East Kazakhstan: the Chaldai ribbon pine forest and the Bayanaul State National Nature Park (BSNP). The study covers four impact zones: protected, natural, anthropogenic and post-fire. A comparative analysis of element concentrations in plants and soils was carried out, and key biogeochemical coefficients were calculated: biotoxicity (PBE), accumulation (Kn), concentration (Kc) and background accumulation (Ko). The results showed that manganese plays a more active role in the biogeochemical cycle, especially in areas with high anthropogenic impact. Iron mainly accumulates in herbaceous forms, but does not reach a physiologically favorable Fe:Mn ratio (2:1), which may indicate stressful conditions for vegetation. In both forest areas, signs of aerotechnogenic pollution were established, while the level of pollution according to the integral indicator Zc was classified as weak. The obtained data confirm the sensitivity of plants to technogenic load and the need for regular environmental monitoring.
Accumulation coefficient , Bioindication , Forest ecosystems , Herbaceous plants , Iron , Manganese , Needles , Pollution
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S. Seifullin Kazakh Agrotechnical Research University, Astana, Kazakhstan
Astana Botanical Garden” Branch of the Republican State Enterprise on the Right of Economic Management “Institute of Botany and Phytoinroduction, Astana, Kazakhstan
Astana International University, Astana, Kazakhstan
Margulan University, Pavlodar, Kazakhstan
L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
National Center for Professional development «Orleu», Astana, Kazakhstan
S. Seifullin Kazakh Agrotechnical Research University
Astana Botanical Garden” Branch of the Republican State Enterprise on the Right of Economic Management “Institute of Botany and Phytoinroduction
Astana International University
Margulan University
L.N. Gumilyov Eurasian National University
National Center for Professional development «Orleu»
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