geomorfГеоморфология и палеогеографияGeomorfologiya i Paleogeografiya2949-17892949-179710.31857/S0435428122050091geomorf-3119Research ArticleПроблемы палеопочвоведения и геоархеологииProblems of palaeopedology and geoarchaeologyВлияние состава и свойств хвалынских отложений на эволюцию почв Волго-Уральского междуречья (по результатам минералогических и микроморфологических исследований)Influence of the composition and properties of Khvalynian deposits on the evolution of soils of the Volga-Ural interfluve (based on the results of mineralogical and micromorphological studies)ЛебедеваМ. П.LebedevaM. P.m_verba@mail.ruПлотниковаО. О.PlotnikovaO. O.ЧурилинН. А.ChurilinN. A.РоманисТ. В.RomanisT. V.ШишковВ. А.ShishkovV. A.Почвенный институт имени В.В. Докучаева, МоскваРоссияDokuchaev Soil Science Institute, MoscowRussian FederationИнститут географии РАН, МоскваРоссияInstitute of Geography RAS, MoscowRussian Federation2022130220235354859Copyright © Лебедева М.П., Плотникова О.О., Чурилин Н.А., Романис Т.В., Шишков В.А., 20232023Лебедева М.П., Плотникова О.О., Чурилин Н.А., Романис Т.В., Шишков В.А.Lebedeva M.P., Plotnikova O.O., Churilin N.A., Romanis T.V., Shishkov V.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://geomorphology.igras.ru/jour/article/view/3119

В северо-западной части Прикаспийской равнины для двух разных типов почв, подстилаемых слоистыми отложениями, проведено сравнение макро-, микроморфологических, гранулометрических, физико-химических показателей и минералогического кварц-полевошпатового коэффициента криогенной контрастности (ККК). Значения ККК для подстилающих почвы отложений ≥1 свидетельствуют о криогенных преобразованиях осадка. Скачкообразное распределение коэффициента ККК в зависимости от текстурного класса слоев (ККК <1 для суглинистых, ККК ≥1 для глинистых) слоистых шоколадных глин у оз. Эльтон в обнажении Лисья балка (+12 м над у. м.) указывает на сезонный привнос и отложение материала верхней части нижнехвалынских морских отложений в водоемы со слабой проточностью на границе голоцен-плейстоцена. Для территории с высотой +26 м над у. м. (Джаныбекский стационар) тоже выявлены лессовидные слои с ККК ≥1, в которых отмечены включения фрагментов шоколадных глин, похожих на глины у озера Эльтон. Это свидетельство того, что отложения слоистых шоколадных глин близ оз. Эльтон являются одним из источников нижних лессовидных слоев отложений на территории Джаныбекского стационара. В сравниваемых почвах на одной и той же глубине (около 100 см) отмечены признаки синлитогенного криоаридного педогенеза: гранулярная структура и гипсовые аккумуляции с признаками растворения и перекристаллизации. В поверхностных “теплых” слоях отложений сформированы разные типы почв, что связано с разными факторами почвообразования в современных и палеоклиматических условиях голоцена. Предполагаем, что после этапа повышенного атмосферного увлажнения в хроноинтервале 3500–3000 л. н. развитие поверхностных почв происходило по-разному. На недренированной территории стационара при неглубоком залегании грунтовых соленых вод сформировался характерный трехчленный солонцовый комплекс с микрорельефом, включающий изученный разрез солонца на микроповышении. На дренированной плоской поверхности у оз. Эльтон промытость почвы от легкорастворимых солей до глубины 70 см маркирует этап повышенного атмосферного увлажнения. Карбонатность лессовидных “теплых” отложений, низкий уровень грунтовых вод и современный аридный педогенез не позволили на этой территории проявиться солонцовому процессу. В результате на этой поверхности сформирована бурая аридная гипсоносная почва. С 2000-х гг. на Джаныбекской равнине происходит увеличение аридности климата, сопровождающееся небольшим увеличением количества осадков зимнего периода, что вызывает более глубокое весеннее промачивание почвы. В результате в верхних 50 (70) см изученных почв отмечены повышенная биогенная активность и усиление гумусонакопления, вынос легкорастворимых солей и перераспределение карбоната кальция. Микрорельеф обусловливает относительную выраженность этих процессов. 

In the northwestern part of the Caspian Plain, a comparison of macro-, micromorphological, granulometric, physico-chemical parameters and mineralogical quartz-feldspar cryogenic contrast coefficient (CCC) was carried out for two different types of soils underlain by layered sediments. The values of the СCC for the underlying sediments are ≥1, which indicates cryogenic transformations of the sediment. The abrupt distribution of the ССС depending on the texture class of layers (ССС <1 for loamy material, ССС≥1 for clay) of layered chocolate clays near Lake Elton in the Fox Dry Valley outcrop (+12 m altitude) indicates the seasonal introduction and deposition of material from the upper part of the Lower Khvalynian marine sediments into reservoirs with weak flow at the boundary of the Holocene-Pleistocene. For the territory with of +26 m altitude (Janybek station), loess-like layers with CCC≥1 were also identified, in which inclusions of fragments of chocolate clays are similar to clays near Lake Elton. This is evidence that the deposits of layered chocolate clays from Fox Dry Valley are one of the sources of the lower loess-like layers of sediments on the territory of Janybek station. In the compared soils at the same depth (about 100 cm), signs of synlithogenic cryoarid pedogenesis were noted: granular structure and gypsum accumulations with signs of dissolution and recrystallization. Different types of soils were formed in the surface “warm” layers of sediments (CCC<1), which is associated with different factors of soil formation in modern and paleoclimatic conditions of the Holocene. We assume that after the stage of increased atmospheric humidification in the chronointerval 3500– 3000 years ago, the development of surface soils occurred in different ways. On the undrained territory of the station, with a shallow occurrence of saline water-table, a characteristic three-component solonetz complex with a microrelief was formed, including the studied soil pit of the Gypsic Solonetz on a micro-elevation. On a drained flat surface near Lake Elton, the washing of the soil from easily soluble salts to a depth of 70 cm marks the stage of increased atmospheric moisture. The carbonate content of loess-like “warm” sediments, deep water-table and modern arid pedogenesis did not allow the solonetzic pedogenesis to manifest in this area. As a result, Haplic Calcisol was formed on this surface.  

Since the 2000s, there has been an increase in climate aridity on the Janybek plain, accompanied by a slight increase in winter precipitation, which causes deeper spring soil wetting. As a result, in the upper 50(70) cm of the studied soils, increased biogenic activity and increased humus accumulation, removal of soluble salts and redistribution of calcium carbonate were noted. The microrelief determines the relative severity of these processes. 

SolonetzCalcisolэволюция почвизменение климатаsolonetzbrown arid soilsoil evolutionclimate changeReferencesArkhipov S.A. On the lithological and facies characteristics of Khvalynian chocolate clays and the conditions of their formation. Byulleten’ komissii po izucheniyu chet vertichnogo perioda. Vol. 22. Moscow: USSR Academy of Sciences (Publ.), 1958. P. 19–25. (in Russ.)Arkhipov S.A. On the lithological and facies characteristics of Khvalynian chocolate clays and the conditions of their formation. Byulleten’ komissii po izucheniyu chet vertichnogo perioda. Vol. 22. Moscow: USSR Academy of Sciences (Publ.), 1958. P. 19–25. (in Russ.)Borisov A.V., Demkin V.A., and Demkina T.S. Paleopochvy i klimat Ergenei v epokhu bronzy, IV–II tysyacheletie do n. e. (Paleosoils and climate of Ergeni in the Bronze Age, IV–II millennium BC). Moscow: Nauka (Publ.), 2006. 210 p. (in Russ.)Borisov A.V., Demkin V.A., and Demkina T.S. Paleopochvy i klimat Ergenei v epokhu bronzy, IV–II tysyacheletie do n. e. (Paleosoils and climate of Ergeni in the Bronze Age, IV–II millennium BC). Moscow: Nauka (Publ.), 2006. 210 p. (in Russ.)Britsyna M.P. Distribution of Khvalynian Chocolate clays and some issues of paleogeography of the Northern Caspian. Trudy Instituta geografii AN SSSR. 1954. Vol. 62. P. 5–27. (in Russ.)Britsyna M.P. Distribution of Khvalynian Chocolate clays and some issues of paleogeography of the Northern Caspian. Trudy Instituta geografii AN SSSR. 1954. Vol. 62. P. 5–27. (in Russ.)Bujanovskij M.S., Doskach A.G., and Fridland V.M. Priroda i sel’skoe khozyaistvo Volgo-Ural’skogo mezhdurech’ya (Nature and agriculture of the Volga-Ural interfluve). Moscow: USSR Academy of Sciences (Publ.), 1956. 231 p. (in Russ.)Bujanovskij M.S., Doskach A.G., and Fridland V.M. Priroda i sel’skoe khozyaistvo Volgo-Ural’skogo mezhdurech’ya (Nature and agriculture of the Volga-Ural interfluve). Moscow: USSR Academy of Sciences (Publ.), 1956. 231 p. (in Russ.)Demkin V.A. and Ivanov I.V. The age of the microrelief and the complexity of the soil cover in the conditions of the semi-desert of the Northern Caspian. Struktura pochvennogo pokrova i ispol’zovanie pochvennykh resursov. Moscow: Nauka (Publ.), 1978. P. 171–178. (in Russ.)Demkin V.A. and Ivanov I.V. The age of the microrelief and the complexity of the soil cover in the conditions of the semi-desert of the Northern Caspian. Struktura pochvennogo pokrova i ispol’zovanie pochvennykh resursov. Moscow: Nauka (Publ.), 1978. P. 171–178. (in Russ.)Gorbunov N.I. Vysokodispersnye mineraly i metody ih izucheniya (Highly dispersed minerals and methods of their study). Moscow: USSR Academy of Sciences (Publ.), 1963. 302 p.Gorbunov N.I. Vysokodispersnye mineraly i metody ih izucheniya (Highly dispersed minerals and methods of their study). Moscow: USSR Academy of Sciences (Publ.), 1963. 302 p.GOST 26213-91 Soils. Methods of determination of organic matter. Moscow: Publishing House of standards, 1992. 8 p. (in Russ.)GOST 26213-91 Soils. Methods of determination of organic matter. Moscow: Publishing House of standards, 1992. 8 p. (in Russ.)Guidelines for Soil Description (4th ed). Food and Agriculture Organization of the United Nations. Rome (Publ.), 2006. IUSS Working Group WRB 2015 World Reference Base for Soil Resources 2014, update 2015 International soil classification system for naming soils and creating legends for soil maps. World Soil Resources Reports. 2015. Vol. 106.Guidelines for Soil Description (4th ed). Food and Agriculture Organization of the United Nations. Rome (Publ.), 2006. IUSS Working Group WRB 2015 World Reference Base for Soil Resources 2014, update 2015 International soil classification system for naming soils and creating legends for soil maps. World Soil Resources Reports. 2015. Vol. 106.Kachinskiy N.A. Fizika pochv (Soil Physics). Moscow: Vysshaya shkola (Publ.), 1965. 320 p. (in Russ.)Kachinskiy N.A. Fizika pochv (Soil Physics). Moscow: Vysshaya shkola (Publ.), 1965. 320 p. (in Russ.)Konyushkova M.V. and Abaturov B.D. The specificities and properties of soils of solonetzic complex on the latest stages of development in the area of Caspian sea region. Dokuchaev Soil Bulletin. 2016. Vol. 83. P. 53–76. (in Russ.)Konyushkova M.V. and Abaturov B.D. The specificities and properties of soils of solonetzic complex on the latest stages of development in the area of Caspian sea region. Dokuchaev Soil Bulletin. 2016. Vol. 83. P. 53–76. (in Russ.)Kovda V.A. Pochvy Prikaspiiskoi nizmennosti (severo-zapadnoi chasti) (Soils of the Caspian lowland (north-western part)). Moscow: USSR Academy of Sciences (Publ.), 1950. 256 p. (in Russ.)Kovda V.A. Pochvy Prikaspiiskoi nizmennosti (severo-zapadnoi chasti) (Soils of the Caspian lowland (north-western part)). Moscow: USSR Academy of Sciences (Publ.), 1950. 256 p. (in Russ.)Kurbanov R., Murray A., Thompson W., Svistunov M., Taratunina N., and Yanina T. First reliable chronology for the early Khvalynian Caspian Sea transgression in the Lower Volga River valley. Boreas. 2021. Vol. 50. No. 1. P. 134–146. https://doi.org/10.1111/bor.12478Kurbanov R., Murray A., Thompson W., Svistunov M., Taratunina N., and Yanina T. First reliable chronology for the early Khvalynian Caspian Sea transgression in the Lower Volga River valley. Boreas. 2021. Vol. 50. No. 1. P. 134–146. https://doi.org/10.1111/bor.12478Lebedeva M., Makeev A., Rusakov A., Romanis T., Yanina T., Kurbanov R., Kust P., and Varlamov E. Landscape dynamics in the Caspian Lowlands since the last deglaciation reconstructed from the pedosedimentary sequence of Srednaya Akhtuba, Southern Russia. Geosciences. 2018. Vol. 8 (12). No. 492. P. 1–21. https://doi.org/10.3390/geosciences8120492Lebedeva M., Makeev A., Rusakov A., Romanis T., Yanina T., Kurbanov R., Kust P., and Varlamov E. Landscape dynamics in the Caspian Lowlands since the last deglaciation reconstructed from the pedosedimentary sequence of Srednaya Akhtuba, Southern Russia. Geosciences. 2018. Vol. 8 (12). No. 492. P. 1–21. https://doi.org/10.3390/geosciences8120492Lebedeva M.P. and Konyushkova M.V. Solonetzic soilscapes in the northern Caspian Lowland: local and spatial heterogeneity of pedofeatures and their changes in time. Dokuchaev Soil Bulletin. 2016. Vol. 86. P. 77–95. (in Russ.)Lebedeva M.P. and Konyushkova M.V. Solonetzic soilscapes in the northern Caspian Lowland: local and spatial heterogeneity of pedofeatures and their changes in time. Dokuchaev Soil Bulletin. 2016. Vol. 86. P. 77–95. (in Russ.)Makshaev R.R. and Svitoch A.A. Сhocolate clays of the Northern Caspian Sea Region: Distribution, structure, and origin. Quaternary International. 2016. Vol. 409. P. 44–49. https://doi.org/10.1016/j.quaint.2015.07.018Makshaev R.R. and Svitoch A.A. Сhocolate clays of the Northern Caspian Sea Region: Distribution, structure, and origin. Quaternary International. 2016. Vol. 409. P. 44–49. https://doi.org/10.1016/j.quaint.2015.07.018Moskvitin A.I. Pleistocene of the Lower Volga region. Trudy geologicheskogo instituta AN SSSR. 1962. Vol. 64. 264 p. (in Russ.)Moskvitin A.I. Pleistocene of the Lower Volga region. Trudy geologicheskogo instituta AN SSSR. 1962. Vol. 64. 264 p. (in Russ.)Novikova N.М., Volkova N.А., and Khitrov N.B. Vegetation of the solonetz complexes within rezerved steppe patch at North Pricaspyi. Arid ecosystems. 2004. Vol. 10. No. 22–23. P. 9–18. (in Russ.)Novikova N.М., Volkova N.А., and Khitrov N.B. Vegetation of the solonetz complexes within rezerved steppe patch at North Pricaspyi. Arid ecosystems. 2004. Vol. 10. No. 22–23. P. 9–18. (in Russ.)Pankova E.I., Vorobyova L.A., Gadzhiyev I.M., Gorokhova I.N., Elizarova T.N., Korolyuk T.V., Lopatovskaya O.G., Novikova A.F., Reshetov G.G., Skripnikova M.I., Slavnyi Yu.A., Chernousenko G.I., and Yamnova I.A. Zasolennye pochvy Rossii (Salt-Affected Soils of Russia). Moscow: Akademkniga (Publ.), 2006. 854 p. (in Russ.)Pankova E.I., Vorobyova L.A., Gadzhiyev I.M., Gorokhova I.N., Elizarova T.N., Korolyuk T.V., Lopatovskaya O.G., Novikova A.F., Reshetov G.G., Skripnikova M.I., Slavnyi Yu.A., Chernousenko G.I., and Yamnova I.A. Zasolennye pochvy Rossii (Salt-Affected Soils of Russia). Moscow: Akademkniga (Publ.), 2006. 854 p. (in Russ.)Plotnikova O., Lebedeva M., Varlamov E.B., Nukhimovskaya Yu.D., and Shuyskaya E.V. Micromorphological features of soils of semidesertic solonetzic complexes under different herbaceous communities with the participation of fodder plant Kochia prostrata (Caspian lowland). Dokuchaev Soil Bulletin. 2019. Vol. 100. P. 83–116. (in Russ.)Plotnikova O., Lebedeva M., Varlamov E.B., Nukhimovskaya Yu.D., and Shuyskaya E.V. Micromorphological features of soils of semidesertic solonetzic complexes under different herbaceous communities with the participation of fodder plant Kochia prostrata (Caspian lowland). Dokuchaev Soil Bulletin. 2019. Vol. 100. P. 83–116. (in Russ.)Rode A.A. and Polsky M.N. Soils of the Janybek station, their morphological structure, mechanical and chemical composition and physical properties. Trudy pochvennogo instituta imeni V.V. Dokuchaeva AN SSSR. 1961. Vol. 56. P. 3–214. (in Russ.)Rode A.A. and Polsky M.N. Soils of the Janybek station, their morphological structure, mechanical and chemical composition and physical properties. Trudy pochvennogo instituta imeni V.V. Dokuchaeva AN SSSR. 1961. Vol. 56. P. 3–214. (in Russ.)Rogov V.V. Osnovy kriogeneza (Fundamentals of cryogenesis). Novosibirsk: Academic publishing house “GEO” (Publ.), 2009. 203 p. (in Russ.)Rogov V.V. Osnovy kriogeneza (Fundamentals of cryogenesis). Novosibirsk: Academic publishing house “GEO” (Publ.), 2009. 203 p. (in Russ.)Romanis T., Lebedeva M., Kolesnikov A., Sapanov M., and Sizemskaya M. A dataset of soil microstructure features and the weather conditions affecting them from 2005 to 2021 in the Caspian Depression. Data in Brief. 2022. Vol. 41. https://doi.org/10.1016/j.dib.2022.107957Romanis T., Lebedeva M., Kolesnikov A., Sapanov M., and Sizemskaya M. A dataset of soil microstructure features and the weather conditions affecting them from 2005 to 2021 in the Caspian Depression. Data in Brief. 2022. Vol. 41. https://doi.org/10.1016/j.dib.2022.107957Shein E.V. Kurs fiziki pochv (Course of soil physics). Moscow: MSU Publishing House (Publ.), 2005. 432 p. (in Russ.)Shein E.V. Kurs fiziki pochv (Course of soil physics). Moscow: MSU Publishing House (Publ.), 2005. 432 p. (in Russ.)Sizemskaya M.L. and Sapanov M.K. The modern condition of ecosystems and strategy of adaptive nature management in Northern Pricaspian semi-desert. Arid ecosystems. 2010. Vol. 16. No. 5 (45). P. 15–24. (in Russ.)Sizemskaya M.L. and Sapanov M.K. The modern condition of ecosystems and strategy of adaptive nature management in Northern Pricaspian semi-desert. Arid ecosystems. 2010. Vol. 16. No. 5 (45). P. 15–24. (in Russ.)Stoops G. Guidelines for analysis and description of soil and regolith thin sections. John Wiley & Sons (Publ.), 2021. 240 p.Stoops G. Guidelines for analysis and description of soil and regolith thin sections. John Wiley & Sons (Publ.), 2021. 240 p.Svitoch A.A., Makshaev R.R., Rostovtseva Yu.V., Klyuvitkina T.S., Berezner O.S., Tregub T.F., and Khomchenko D.S. Shokoladnye gliny Severnogo Prikaspiya (Chocolate clays of the Northern Caspian). Krasnogorsk: Geographical Faculty of Moscow State University Krasnogorsk Printing House (Publ.), 2017. 140 p. (in Russ.)Svitoch A.A., Makshaev R.R., Rostovtseva Yu.V., Klyuvitkina T.S., Berezner O.S., Tregub T.F., and Khomchenko D.S. Shokoladnye gliny Severnogo Prikaspiya (Chocolate clays of the Northern Caspian). Krasnogorsk: Geographical Faculty of Moscow State University Krasnogorsk Printing House (Publ.), 2017. 140 p. (in Russ.)Yakubov T.F. Sands of the Naryn semi-desert of the Lower Volga region. Works of the sector of sands and deserts. Trudy pochvennogo instituta imeni V.V. Dokuchaeva AN SSSR. 1938. Vol. 17. P. 7–118. (in Russ.)Yakubov T.F. Sands of the Naryn semi-desert of the Lower Volga region. Works of the sector of sands and deserts. Trudy pochvennogo instituta imeni V.V. Dokuchaeva AN SSSR. 1938. Vol. 17. P. 7–118. (in Russ.)Yanina T.A., Svitoch A.A., Kurbanov R.N., Murray A.S., Tkach N.T., and Sychev N.V. Opyt datirovaniya pleistotsenovykh otlozhenii nizhnego Povolzh’ya metodom opticheski stimulirovannoi lyuminestsentsii (Paleogeographic analysis of the results of optically stimulated luminescence dating of pleistocene deposits of the lower Volga area). Vestnik Moskovskogo universiteta. Seriya 5. Geografiya. 2017. Vol. 1. P. 20–28. (in Russ.)Yanina T.A., Svitoch A.A., Kurbanov R.N., Murray A.S., Tkach N.T., and Sychev N.V. Opyt datirovaniya pleistotsenovykh otlozhenii nizhnego Povolzh’ya metodom opticheski stimulirovannoi lyuminestsentsii (Paleogeographic analysis of the results of optically stimulated luminescence dating of pleistocene deposits of the lower Volga area). Vestnik Moskovskogo universiteta. Seriya 5. Geografiya. 2017. Vol. 1. P. 20–28. (in Russ.)

The authors declare that there are no conflicts of interest present.