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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">10.19047/0136-1694-2019-98-57-76</article-id><article-id custom-type="elpub" pub-id-type="custom">esoil-342</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>ВАРЬИРОВАНИЕ ПОКАЗАТЕЛЕЙ КИСЛОТНОСТИ В ПОЧВАХ ПОЙМЫ РЕКИ АМУР</article-title><trans-title-group xml:lang="en"><trans-title>VARIATION OF ACID VALUES IN FLOODPLAIN SOILS OF THE AMUR RIVER</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8839-036X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мартынов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Martynov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"/><email xlink:type="simple">lexx_1981@list.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт геологии и природопользования ДВО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Geology and Nature Management &#13;
of the Far East Branch of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>23</day><month>09</month><year>2019</year></pub-date><volume>0</volume><issue>98</issue><fpage>57</fpage><lpage>76</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мартынов А.В., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Мартынов А.В.</copyright-holder><copyright-holder xml:lang="en">Martynov A.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/342">https://bulletin.esoil.ru/jour/article/view/342</self-uri><abstract><p>Понимание изменчивости кислотных свойств в почвенном покрове пойм необходимо для обеспечения рационального управления пойменными территориями, так как уровень pH является фундаментальным показателем, определяющим концентрацию растворимых и доступных для растений элементов. Выполнено определение актуальной, потенциальной и обменной кислотности в 87 почвенных разрезах, заложенных в пределах верхнего и среднего течения р. Амур. Для характеристики кислотности использовались методы описательной статистики, корреляция и линейная регрессия. Установлено, что кислотность снижается в пойме верхнего и среднего Амура в направлении: аллювиальные болотные (торфяно-глеевые и перегнойно-глеевые) почвы, остаточно аллювиальные (ржавоземы и брунеземы) почвы, аллювиальные серогумусовые глееватые почвы, аллювиальные серогумусовые. Почвы поймы верхнего Амура, в сравнении с почвами среднего Амура, более кислые, в среднем значение рНKCl в почвах одного генезиса меньше на 0.2–0.4. Выявлено, что коэффициент регрессии позволяет судить о кислотно-основных функциональных группах почвенных компонентов, формирующих реакцию среды в почвах. Коэффициент больше единицы указывает на органическую природу кислотности, ниже единицы – на преобладание минеральных кислот.</p></abstract><trans-abstract xml:lang="en"><p>Understanding the variability of acidic properties in the soil cover of floodplains is of greatest importance as far as it helps to ensure the rational management of floodplain areas, since the pH level is a fundamental indicator that determines the concentration of soluble and available elements for plants. This article provides the results of actual, potential and exchangeable acidity measurements performed in 87 soil profiles located within the upper and middle reaches of the Amur River. Descriptive statistics, correlation and linear regression were used to characterize acidity. It has been established that acidity decreases in the floodplain of the upper and middle reaches of the Amur River in the following direction: alluvial marsh (peat-gley and humus-gley) soils, residually-alluvial (rzhavozems and brunezems) soils, alluvial gray gley soil, alluvial gray humus. The soils of the upper Amur floodplain are more acidic in comparison with the soils of the middle Amur, the average pHKCl values in soils with the same genesis of the former are less by 0.2–0.4 than the ones of the latter. It was revealed that the regression coefficient is indicative of the acid-base functional groups of the soil components which are in charge of soil pH. The coefficient greater than 1 points to the organic nature of acidity; below 1 – to the prevalence of mineral acids.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>актуальная</kwd><kwd>потенциальная</kwd><kwd>обменная кислотность</kwd><kwd>линейная регрессия</kwd><kwd>река Амур</kwd><kwd>аллювиальные почвы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>actual</kwd><kwd>potential</kwd><kwd>exchangeable acidity</kwd><kwd>linear regression</kwd><kwd>the Amur River</kwd><kwd>alluvial soils</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">Ефремова Т.Т., Ефремов С.П., Мелентьева Н.В., Аврова А.Ф. Высотная дифференциация кислотно-основных свойств долинных торфяных почв Кузнецкого Алатау // Вестник Томского государственного университета. Биология. 2018. № 41. С. 135–155. 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