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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">10.19047/0136-1694-2025-123-30-64</article-id><article-id custom-type="elpub" pub-id-type="custom">esoil-944</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>Анализ гидрофизических свойств почв с использованием поросетевых моделей</article-title><trans-title-group xml:lang="en"><trans-title>Analysis of hydrophysical properties of soils using pore-network models</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-1395-3745</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Толстыгин</surname><given-names>К. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Tolstygin</surname><given-names>K. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>119017, Москва, Пыжевский пер, 7, стр. 2; 119991, Москва, Ленинские горы, 1</p></bio><bio xml:lang="en"><p>7 Bld. 2 Pyzhevskiy per., Moscow 119017; 1 Leninskie Gori, Moscow 119234</p></bio><email xlink:type="simple">kirill.tolstygin@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3733-0284</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фомин</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Fomin</surname><given-names>D. S.</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">fomin_ds@esoil.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2453-3090</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Юдина</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Yudina</surname><given-names>A. V.</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">yudina_av@esoil.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8379-2132</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Герке</surname><given-names>К. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Gerke</surname><given-names>K. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>123242, Москва, Б. Грузинская ул. 10, стр. 1</p></bio><bio xml:lang="en"><p>1 Bld. 10 B. Gruzinskaya Str., Moscow 123242</p></bio><email xlink:type="simple">k.gerke@digital-core.com</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФИЦ “Почвенный институт им. В.В. Докучаева”; МГУ им. М.В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Research Centre “V.V. Dokuchaev Soil Science Institute”; Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><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><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Институт физики Земли имени О.Ю. Шмидта</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Schmidt Institute of Physics of the Earth</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>17</day><month>07</month><year>2025</year></pub-date><volume>0</volume><issue>123</issue><fpage>30</fpage><lpage>64</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Толстыгин К.Д., Фомин Д.С., Юдина А.В., Герке К.М., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Толстыгин К.Д., Фомин Д.С., Юдина А.В., Герке К.М.</copyright-holder><copyright-holder xml:lang="en">Tolstygin K.D., Fomin D.S., Yudina A.V., Gerke K.M.</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/944">https://bulletin.esoil.ru/jour/article/view/944</self-uri><abstract><p>Современные физические модели почвы традиционно рассматривают поровое пространство как статичное, однако новые методы визуализации, такие как рентгеновская томография, позволили выявить динамику структуры, которая может интенсивно изменяться под влиянием влажности и температуры. Целью работы является изучение структуры порового пространства с применением поросетевых моделей (ПСМ) и сравнение с методом основной гидрофизической характеристики (ОГХ). Работа основывалась на лабораторном эксперименте по увлажнению и иссушению образцов чернозема миграционно-мицеллярного Курской области с измерением ОГХ и параллельной регистрацией состояния почвенной структуры с использованием рентгеновской компьютерной томографии. Из 3D-изображений почв проведено выделение ПСМ, для которых проведен расчет гидрофизических свойств в масштабе пор, включая моделирование основной гидрофизической характеристики и коэффициента влагопроводности. Результаты сравнения размеров и объемов пор показывают значительное превышение объема пор, который рассчитывался на основе измерения ОГХ, по сравнению с прямым измерением геометрии по компьютерной томографии. Разница в представлении порового пространства выражается в значительных различиях моделирования влагопроводности на основе ПСМ в области низкого и высокого давления влаги (области крупных и мелких пор соответственно) по сравнению с классическим подходом на основе моделирования ОГХ с использованием уравнений ван Генухтена и ван Генухтена-Муалема. При этом кривые относительной ненасыщенной гидравлической проводимости, измеренной с использованием ПСМ и на основе ОГХ, показывают высокую степень схожести. На основании результатов работы продемонстрировано, что моделирование гидрофизических свойств почвы с применением ПСМ является крайне перспективным подходом и имеет потенциал более надежного инструмента для моделирования движения влаги, чем классический подход на основе описания ОГХ уравнением ван Генухтена. Однако фундаментальные различиям между методами оставляют открытым ряд вопросов, требующих ответа прежде, чем метод моделирования гидрофизических свойств почв на основе ПСМ будет широко использоваться.</p></abstract><trans-abstract xml:lang="en"><p>Modern soil physical models traditionally consider the pore space as static; however, new visualization techniques, such as X-ray tomography, have revealed structural dynamics that can intensively change under the influence of moisture and temperature. The aim of this study is to investigate the structure of the pore space using pore network models (PNMs) and to compare them with the method of the water retention curve (WRC). The study was based on the laboratory experiment involving the wetting and drying of samples of Haplic Chernozem from the Kursk region, with measurements of WRC and registration of the soil structure state using X-ray computed tomography (XCT). From the 3D soil images, PNMs were extracted, for which hydrophysical properties were calculated, including modeling of the WRC and the water conductivity. The comparison of pore sizes and volumes shows a significant excess of the pore volume calculated based on WRC measurements, compared to direct geometry measurements by XCT. The difference in the representation of the pore space is expressed through significant differences in modeling of water conductivity based on PNMs in the regions of low and high capillar pressure (large and small pore sizes, respectively) compared to the approach based on WRC modeling using the van Genuchten and van Genuchten-Mualem equations. However, the curves of relative unsaturated hydraulic conductivity measured using PNMs and based on WRC show a high degree of similarity. Based on the results of the study, it was demonstrated that modeling soil hydrophysical properties using PNMs is a highly promising approach and has the potential to be a more reliable tool for modeling water dynamics than the approach based on describing WRC using the van Genuchten equation. Nevertheless, the fundamental differences between the methods leave several questions open that require answers before the widespread use of PNMs for calculation of soil hydrophysical properties.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>поросетевые модели</kwd><kwd>основная гидрофизическая&#13;
характеристика</kwd><kwd>уравнение ван Генухтена-Муалема</kwd><kwd>микротомография</kwd></kwd-group><kwd-group xml:lang="en"><kwd>pore network models</kwd><kwd>water retention curve</kwd><kwd>van Genuchten-Mualem equation</kwd><kwd>microtomography</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке гранта РНФ 24-67-00026.</funding-statement><funding-statement xml:lang="en">This research was supported by Russian Science Foundation grant 24-67-00026.</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">Абросимов К.Н., Герке К.М., Фомин Д.С., Романенко К.А., Корост Д.В. Томография в почвоведении: от первых опытов к современным методам (обзор) // Почвоведение. 2021. Т. 55. №. 9. 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