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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">sergeogr</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Российской академии наук. Серия географическая</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2587-5566</issn><issn pub-type="epub">2658-6975</issn><publisher><publisher-name></publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31857/S2587556622010071</article-id><article-id custom-type="elpub" pub-id-type="custom">sergeogr-1493</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>Проблемы деградации земель и устойчивого землепользования</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Land Degradation and Sustainable Land Management</subject></subj-group></article-categories><title-group><article-title>Зависимость микробиологической активности и химических характеристик почвы от топографической позиции на старопахотных участках черноземной лесостепи</article-title><trans-title-group xml:lang="en"><trans-title>Soil Microbial Activity and Chemical Properties in Relation to the Topographic Position of Chernozem Arable Lands</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Карелин</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Karelin</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва </p></bio><bio xml:lang="en"><p> Moscow </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>Цымбарович</surname><given-names>П. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsymbarovich</surname><given-names>P. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва </p></bio><bio xml:lang="en"><p> Moscow </p></bio><email xlink:type="simple">petr@tsymbarovich.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт географии РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Geography, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>09</day><month>02</month><year>2022</year></pub-date><volume>86</volume><issue>1</issue><issue-title>Специальный выпуск: Проблемы деградации земель и устойчивого землепользования</issue-title><fpage>134</fpage><lpage>150</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Карелин Д.В., Цымбарович П.Р., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Карелин Д.В., Цымбарович П.Р.</copyright-holder><copyright-holder xml:lang="en">Karelin D.V., Tsymbarovich P.R.</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://izvestia.igras.ru/jour/article/view/1493">https://izvestia.igras.ru/jour/article/view/1493</self-uri><abstract><p>Необходимость автоматизации и упрощения пространственно-временного мониторинга хозяйственно важных почвенных характеристик, в частности содержания углерода интенсивно используемых земель, диктует продолжение поиска относительно простых способов их дистанционной оценки. В результате статистического анализа материалов полевых наблюдений, лабораторных экспериментов и полученных по данным дистанционного зондирования Земли из космоса цифровых моделей рельефа на модельных трансектах, заложенных на различающихся по характеру рельефа участках длительно используемых пахотных черноземов (Курская биосферная станция Института географии РАН, Курская область, Россия), обнаружены средние по силе положительные связи между крутизной склона, LS-фактором (Slope Length and Steepness factor, или фактор влияния длины и крутизны склона на эрозионную опасность) и почвенными характеристиками. Обнаруженные связи выражаются в снижении содержания ведущих биогенных элементов и соединений (углерод, азот и вода), а также в снижении присутствия и изменении активности микробиоты почвы. Вероятнее всего, это реализуется через водную эрозию и меньшую доступность воды на склонах большей крутизны. На основе полученных результатов можно говорить о применимости оцененного по данным дистанционного зондирования Земли LS-фактора для прогноза содержания углерода и других связанных с ним значимых физико-химических и биологических показателей состояния старопахотных типичных черноземов в крупном пространственном масштабе. Одновременно установлено, что полученные на основе космических снимков спектральные характеристики поверхности почвы менее применимы для этих целей, так как они зависят от условий съемки (погодные условия, приемы обработки почвы, растительный покров), а также имеют ограничения, накладываемые недостаточным разрешением доступных космических снимков.</p></abstract><trans-abstract xml:lang="en"><p>The need to automate and simplify the spatial and temporal monitoring of economically important soil characteristics, in particular the carbon content of intensively used lands, dictates the continued search for relatively simple ways of their remote evaluation. We discovered medium-strength significant relations of LS-factor (Slope Length and Steepness factor; erosion potential of the relief), and soil characteristics as a result of a statistical analysis of field observations, laboratory experiments, and digital elevation models obtained from space remote sensing data. Surface data were obtained from model transects located in different relief positions of long-term arable chernozems (Kursk Oblast, Russia). These relationships are expressed in decreased content of the key nutrients and compounds (SOC, nitrogen, and water), as well as in reduced presence and altered activity of soil microbiota. We assume that the main reason for this is water erosion and less water availability on steeper slopes. Based on our results, we believe that LS-factor calculated on the basis of satellite remote sensing data is applicable for evaluation of erosion hazard, as well as for prediction of carbon content and other related significant physical, chemical, and biological indicators of the state of perennial arable haplic chernozems for a large spatial scale. At the same time, we found that the spectral characteristics of the soil surface obtained from remote sensing data are less applicable for these purposes. This is due to the dependence of the obtained satellite data on the survey conditions (weather, soil tillage techniques, vegetation cover characteristics) and the limitations imposed by the insufficient resolution of the available satellite images.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>типичные черноземы</kwd><kwd>пашни</kwd><kwd>эрозионный потенциал рельефа</kwd><kwd>содержание углерода в почве</kwd><kwd>эмиссия СО2 из почвы</kwd><kwd>дистанционное зондирование Земли</kwd><kwd>крутизна склона</kwd><kwd>LS-factor</kwd><kwd>цифровая модель рельефа</kwd></kwd-group><kwd-group xml:lang="en"><kwd>haplic chernozems</kwd><kwd>LS-factor</kwd><kwd>soil carbon content</kwd><kwd>microbial biomass</kwd><kwd>basal and substrate induced respiration</kwd><kwd>Earth remote sensing</kwd><kwd>slope steepness</kwd><kwd>digital terrain model</kwd><kwd>Russia</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Анализ данных и лабораторные исследования проводились в рамках госзадания № 0148-2019-0006 Института географии РАН. Полевые работы 2020 г. были поддержаны грантом РФФИ № 19-29-05025.</funding-statement><funding-statement xml:lang="en">The analysis and laboratory experiments were carried out under the state-ordered research theme of the Institute of Geography RAS no. 0148-2019-0006. The fieldwork in 2020 was supported by the grant of RFBR no. 19-29-05025.</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">Буряк Ж.А. Совершенствование подходов к оценке эрозионной опасности агроландшафтов с использованием ГИС-технологий // Научн. Ведомости БелГУ. Серия: Естественные науки. 2014. Т. 23 (194). С. 140–146.</mixed-citation><mixed-citation xml:lang="en">Ananyeva N.D., Susyan E.A., Chernova O.V., Wirth S. Microbial respiration activities of soils from different climatic regions of European Russia. Eur. J. 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