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Title: MICROMORPHOLOGICAL FEATURES OF SALT-AFFECTED SOILS FROM THE BAIKAL REGION OF RUSSIA
MICROMORPHOLOGICAL FEATURES OF SALT-AFFECTED SOILS FROM THE BAIKAL REGION OF RUSSIA

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Irina Yamnova; Galina Chernousenko
10.5593/sgem2024/3.1/s13.31
10.5593/sgem2024/3.1
1314-2704
978-619-7603-70-5
English
24
3.1
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Soils
Micromorphological features of salt-affected soils in the Cis-Baikal and Trans-Baikal regions (south of East Siberia, Russia) are considered. When studying morphogenesis of these soils, pedofeatures of soluble salts and gypsum serve as indicators of modern and former stages of soil formation. Comparative-geographical, micromorphological, and chemical methods have been applied to study soil salinization. Chemical analyses attest to the presence of gypsum and soluble salts in solonchaks of both regions. However, they do not allow us to judge the direction of modern soil salinization processes. Micromorphological method makes it possible to specify the genesis of salt pedofeatures. When comparing microfabrics of solonchaks in the Cis-Baikal and Trans-Baikal regions, the features attesting to their different geneses have been identified. Thus, in the solonchak from the Priolkhonye area (Cis-Baikal region), gypsum pedofeatures were formed during previous stages of soil formation and are now subjected to destruction. At the same time, the accumulation of soluble salts is still active in this soil. Analysis of the microstructure of the soil profile of the meadow-marsh saline soil of Transbaikalia showed the presence of both processes currently underway - both gypsum formation and salt accumulation in the soil profile.
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This work was supported in the framework of state assignment 0439-2022-0009 «To study the features of the genesis and distribution of saline soils in the steppe and dry steppe regions of Eastern Siberia using cartographic, chemical, micromorphological and mineralogical methods».
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https://doi.org/10.5593/sgem2024/3.1/s13.31
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Proceedings of 24th International Multidisciplinary Scientific GeoConference SGEM 2024
24th International Multidisciplinary Scientific GeoConference SGEM 2024, 1 - 07 July, 2024
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Russian Acad Arts; Turkish Acad Sci.
253-260
1 - 07 July, 2024
website
9697
microstructure, soil salinization, new salt formations, gypsum, Baikal and Transbaikalia regions

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