ECOLOGICAL AND LIMNOLOGICAL RESEARCH OF THE SUSTAINABILITY OF THE ECOSYSTEM OF THE LAKE INDER
Zhiyenkulova L. Yessenamanova M. Jexenov M. Koroleva E.G. Nurbayeva F.
2024National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2024#1Issue 463111 - 127 pp.
The article presents ecological and limnological studies of the ecosystem of three sources of the Lake Inder for the periods 2013-2023. Of the salt dome landscapes of the Caspian lowland, the largest is the Inder salt dome region, which includes the karst Inder Mountains. The Inder lakes are represented by an ellipsoid shape with an area of 115 km2 and a water cut of - 23 m below sea level. Along the northern coast of Lake Inder there are more than 50 springs, which are grouped into three most significant spring tracts — Tilepbulak, Tuzdybulak and Ashytuzdybulak. Samples of salt solutions were taken from the springs of three springs and studies were conducted to study the hydrochemical composition and content of heavy metals. A comparative analysis of the hydrochemical composition showed that the salt solution of Lake Inder belongs to the sodium chloride and calcium sulfate and magnesium sulfate types. The content of sodium cations in the brines exceeds 89 to 545 times; calcium from 2.7 to 7.4 times; magnesium cations from 3 to 26-28 times in 2023. Among the anions, chloride anions exceed from 16.6 to 105 times; sulfate anions from 1.5 to 101 times. It should be noted that chlorine anions and sodium cations mainly predominate. Thus, the salts of the sources are mostly chloride, except for the source of Tilepbulak. For all the studied heavy metals, no MPC exceedances were observed at all sources of Lake Inder, except for chromium, the content of which in all sources in 2013 exceeded from 5 to 7.5 times. For all other heavy metals, such as copper, zinc, lead, cadmium and manganese in all periods of research at all three sources.
chlorine anions; sodium cations , content of heavy metals , ecological and limnological studies , hydrochemical composition , sustainability of Lake Inder
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Sh.Yessenov Caspian University of Technology and Engineering, Aktau, Kazakhstan
Kh.Dosmukhamedov Atyrau University, Atyrau, Kazakhstan
Moscow State University, Moscow, Russian Federation
Sh.Yessenov Caspian University of Technology and Engineering
Kh.Dosmukhamedov Atyrau University
Moscow State University
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