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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">10.19047/0136-1694-2022-112-24-47</article-id><article-id custom-type="elpub" pub-id-type="custom">esoil-716</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>Особенности спектральной отражательной способности фракций образцов почв размером от 20 до 5 000 мкм</article-title><trans-title-group xml:lang="en"><trans-title>Peculiarities of spectral reflectance of fractions with sizes from 20 to 5,000 microns in soil samples</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8739-5441</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Савин</surname><given-names>И. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Savin</surname><given-names>I. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>119017, Москва, Пыжевский пер, 7, стр. 2308015, Белгород, ул. Победы, 85</p></bio><bio xml:lang="en"><p>7 Bld. 2 Pyzhevskiy per., Moscow 11901785 Pobedy Str., Belgorod 308015</p></bio><email xlink:type="simple">savin_iyu@esoil.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/0000-0003-2320-6645</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шишкин</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shishkin</surname><given-names>M. 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><email xlink:type="simple">shishkin_ma@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/0000-0002-6799-3209</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шарычев</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Sharychev</surname><given-names>D. 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">sharychev_dv@esoil.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФИЦ “Почвенный институт им. В.В. Докучаева”; Белгородский государственный национальный исследовательский университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Research Centre “V.V. Dokuchaev Soil Science Institute”; Belgorod Federal 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><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>10</day><month>12</month><year>2022</year></pub-date><volume>0</volume><issue>112</issue><fpage>24</fpage><lpage>47</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Савин И.Ю., Шишкин М.А., Шарычев Д.В., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Савин И.Ю., Шишкин М.А., Шарычев Д.В.</copyright-holder><copyright-holder xml:lang="en">Savin I.Y., Shishkin M.A., Sharychev D.V.</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/716">https://bulletin.esoil.ru/jour/article/view/716</self-uri><abstract><p>На примере образцов пахотных горизонтов трех почв (дерново-подзолистой, серой лесной и чернозема выщелоченного) исследованы особенности отражения электромагнитных волн от их фракций разных размеров. Выделение фракций путем сухого просеивания проведено с использованием машины для просеивания Retsch AS 200 BASIC. Выделено 14 фракций размером от менее 20 мкм до размера более 5 000 мкм. Для каждой фракции и для образца почв до просеивания была определена спектральная отражательная способность в диапазоне электромагнитных волн от 350 до 2 500 нм с использованием полевого спектрорадиометра SR-6500 (Spectral Evolution, USA). Проведен анализ сходства и различий полученных кривых спектральной отражательной способности отдельных фракций с использованием их визуального анализа, метода построения дендрограмм сходства, а также регрессионный анализ между отражением света и размером фракций. Подтверждено, что на более детальном уровне анализа, по сравнению с проведенным другими исследователями ранее, общие закономерности отражения света образцами не изменяются. Наблюдается более высокое отражение волн более тонкими фракциями и меньшее отражение – более крупными фракциями. При этом кривые спектрального отражения для отдельных фракций выбиваются из общей закономерности, изменяется выраженность локальных экстремумов кривых. Это подтверждает отличие вещественного состава, формирующего цвет почв, этих фракций от других. Также это свидетельствует о том, что цвет смешанного образца является спектральной смесью цвета его отдельных гранулометрических фракций, каждая из которых обладает своими особенностями отражения света. Предположительно, именно это является основной причиной такого явления как изменение спектральной отражательной способности открытой поверхности почв под воздействием атмосферных осадков.</p></abstract><trans-abstract xml:lang="en"><p>By the example of arable horizon samples taken from three soil types (sod-podzolic, gray forest, and leached chernozem) the peculiarities of electromagnetic waves reflection from their different particle size fractions were studied. The extraction of fractions by dry sieving was carried out using Retsch AS 200 BASIC equipment. As a result, 14 fractions ranging in size from less than 20 microns to more than 5,000 microns were isolated. Spectral reflectance was determined for each fraction and for the soil sample before sieving in the electromagnetic wave range from 350 to 2,500 nm using a SR-6500 field spectroradiometer (Spectral Evolution, USA). Analysis of similarities and differences in the obtained spectral reflectance curves of individual fractions was carried out using their visual analysis, the method of similarity dendrogram construction, as well as regression analysis between light reflectance and fraction particle size. It was confirmed that at a more detailed level of analysis compared to the one carried out by other researchers earlier, the general patterns of light reflectance of the samples do not change. A higher reflection of waves by thinner fractions and a lower reflection by more coarse fractions are observed. At the same time, spectral reflection curves for individual fractions are out of the general pattern, the level of intensity of local extremes of the curves’ changes. This confirms the difference of the material composition, which forms the color of soils, of these fractions from others. The color of the mixed sample is a spectral mixture of colors of its separate fractions. Presumably, this is the main reason for such a phenomenon as change of spectral reflectivity of open surface of soils under the influence of atmospheric precipitation.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>цвет почв</kwd><kwd>сухое просеивание</kwd><kwd>почвенные фракции разных размеров</kwd></kwd-group><kwd-group xml:lang="en"><kwd>soil color</kwd><kwd>soil spectral reflectance</kwd><kwd>dry sieving</kwd><kwd>soil fractions of different particle sizes</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Виндекер Г.В., Прудникова Е.Ю., Савин И.Ю. Трансформация открытой поверхности почв под воздействием осадков в модельном эксперименте // Бюллетень Почвенного института имени В.В. Докучаева. 2018. Вып. 95. С. 23–40. 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