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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">esoil</journal-id><journal-title-group><journal-title xml:lang="ru">Бюллетень Почвенного института имени В.В. Докучаева</journal-title><trans-title-group xml:lang="en"><trans-title>Dokuchaev Soil Bulletin</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0136-1694</issn><issn pub-type="epub">2312-4202</issn><publisher><publisher-name>V.V. Dokuchaev Soil Science Institute</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.19047/0136-1694-2021-109-5-35</article-id><article-id custom-type="elpub" pub-id-type="custom">esoil-679</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Статьи</subject></subj-group></article-categories><title-group><article-title>Морфология, минералогический состав и генезис слитоземов лимана Большой (Волгоградская область)</article-title><trans-title-group xml:lang="en"><trans-title>Morphology, mineralogical composition and genesis of vertisols in liman Bolshoi (Volgograd region)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2055-214X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Каганова</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Kaganova</surname><given-names>A. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>119017, Москва, Пыжевский пер, 7, стр. 2</p></bio><bio xml:lang="en"><p>7 Bld. 2 Pyzhevskiy per., Moscow 119017</p></bio><email xlink:type="simple">a.e.kaganova@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Варламов</surname><given-names>Е. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Varlamov</surname><given-names>E. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>119017, Москва, Пыжевский пер, 7, стр. 2</p></bio><bio xml:lang="en"><p>7 Bld. 2 Pyzhevskiy per., Moscow 119017</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чурилин</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Churilin</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>119017, Москва, Пыжевский пер, 7, стр. 2</p></bio><bio xml:lang="en"><p>7 Bld. 2 Pyzhevskiy per., Moscow 119017</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мусаэлян</surname><given-names>Р. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Musaelyan</surname><given-names>R. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>119017, Москва, Пыжевский пер, 7, стр. 2</p></bio><bio xml:lang="en"><p>7 Bld. 2 Pyzhevskiy per., Moscow 119017</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФИЦ “Почвенный институт им. В.В. Докучаева”</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Research Centre “V.V. Dokuchaev Soil Science Institute”</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>25</day><month>12</month><year>2021</year></pub-date><volume>0</volume><issue>109</issue><fpage>5</fpage><lpage>35</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Каганова А.Е., Варламов Е.Б., Чурилин Н.А., Мусаэлян Р.Э., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Каганова А.Е., Варламов Е.Б., Чурилин Н.А., Мусаэлян Р.Э.</copyright-holder><copyright-holder xml:lang="en">Kaganova A.E., Varlamov E.B., Churilin N.A., Musaelyan R.E.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://bulletin.esoil.ru/jour/article/view/679">https://bulletin.esoil.ru/jour/article/view/679</self-uri><abstract><p>Изучено морфологическое строение профилей двух почв микроповышений (слитозем квазиглеевый элювиированный карбонатный окисленно-глеевый и слитозем квазиглеевый сегрегационно-карбонатный окисленно-глеевый) гильгайного комплекса лимана Большой (Светлоярский район Волгоградской области). Несмотря на одинаковое положение объектов в микрорельефе и равные относительные высоты микроповышений, выявлены морфологические различия профилей на уровне подтипа. В одном из профилей в связи с более высокой влажностью признаки слитогенеза были выражены слабее. Тогда как во втором были описаны более яркие признаки слитогенеза – сликенсайды протяженностью 15–30 см, мелкие поверхности скольжения (до 10 см), клиновидные агрегаты. Доля илистой фракции в слитых горизонтах, полученной по методике Горбунова, составила 45–52%. Анализ качественного минералогического состава илистых фракций показал, что смектитовая фаза представлена преимущественно неупорядоченными смешанослойными смектитиллитовыми образованиями. Индивидуальный иллит по характеру заполнения октаэдрического слоя принадлежит к биотитовой разновидности. Анализ соотношения основных минеральных фаз показал преобладание иллита (53–87%) во всех почвенных образцах. В первом разрезе отмечено увеличение доли смектитового компонента с глубиной (от 1 до 35%). Во втором разрезе закономерности распределения минеральных фаз отсутствуют (колебания в пределах 24–37%), что может быть связано с вовлечением слоев шоколадных глин в профиль в процессе почвообразования. Минералогический анализ шоколадных глин (почвообразующих пород) показал их высокую неоднородность в зависимости от глубины залегания исследуемого слоя. Корреляции между выраженностью признаков слитогенеза и долей набухающего компонента выявлено не было. Дана схема этапов формирования почвенного покрова исследованного участка лимана. Основные причины, которые привели к образованию различных почв на микроповышениях, – неравномерность “выдавливания” почвенных блоков снизу вверх в процессе формирования микрорельефа, а также локальная эрозия бугорков.</p></abstract><trans-abstract xml:lang="en"><p>The morphological structure of the profiles of two vertisols on microelevations of the gilgai complex of the Bolshoi liman (Svetloyarsk district of the Volgograd region) was studied. Despite the same microrelief position and equal relative heights of microelevations, morphological differences in the profiles at the subtype level were revealed. In one of the profiles, due to the higher humidity, the signs of vertisol genesis were less pronounced. Whereas in the second, more pronounced signs of vertic processes were described – slickensides with 15–30 cm length, smaller slickensides up to 10 cm, wedge-shaped aggregates. The proportion of the clay fraction in the mixed horizons, obtained by the Gorbunov method, was 45– 52%. Analysis of the qualitative mineralogical composition of the clay (&lt;1μm) fractions showed that the smectite phase is represented mainly by disordered and mixed-layered smectite-illite formations. Individual illite belongs to the biotite variety according to the filling of the octahedral layer. Analysis of the ratio of the main mineral phases showed the predominance of illite (53–87%) in all soil samples. In the first pit an increase in the proportion of the smectite component with depth (from 1 to 35%) is noted. In the second pit, there are no regularities in the distribution of mineral phases (fluctuations within 24–37%), which may be associated with the involvement of chocolate clays layers in the profile during soil formation. Mineralogical analysis of chocolate clays (parent rocks) showed their high heterogeneity depending on the depth of the studied layer. No correlation was found between the severity of the signs of vertic processes and the proportion of the swelling component. Illustration of the stages of the formation of the soil cover on the investigated plot of the liman is given. The main reasons that led to the formation of different soils on microelevations are the unevenness of the “squeezing out” of soil blocks upward in the process of microrelief formation in combination with local erosion.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>вертигенез</kwd><kwd>гильгай</kwd><kwd>набухающие минералы</kwd><kwd>смешанослойные образования</kwd><kwd>илистая фракция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>vertic processes</kwd><kwd>gilgai</kwd><kwd>swelling minerals</kwd><kwd>mixed-layered minerals</kwd><kwd>clay fraction</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Авторы выражают признательность Хитрову Николаю Борисовичу за помощь при полевых работах, а также ценные советы при обсуждении материалов.</funding-statement><funding-statement xml:lang="en">The authors would like to thank Nikolai Borisovich Khitrov for his help in the fieldwork and his valuable advice in discussing the results.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Горбунов Н.И. 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