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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">10.19047/0136-1694-2018-91-46-62</article-id><article-id custom-type="elpub" pub-id-type="custom">esoil-202</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>Крупномасштабное цифровое картографирование содержания органического углерода почв с помощью методов машинного обучения</article-title><trans-title-group xml:lang="en"><trans-title>The large scale digital mapping of soil organic carbon using machine learning algorithms</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>Чинилин</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Chinilin</surname><given-names>A. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</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>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><email xlink:type="simple">savin_iyu@esoil.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>РГАУ-МСХА им. К.А. Тимирязева</institution><country>Россия</country></aff><aff xml:lang="en"><institution>RSAU-MTAA</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Почвенный институт им. В.В. Докучаева</institution><country>Россия</country></aff><aff xml:lang="en"><institution>V.V. Dokuchaev Soil Science Institute</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>01</day><month>03</month><year>2018</year></pub-date><volume>0</volume><issue>91</issue><fpage>46</fpage><lpage>62</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Чинилин А.В., Савин И.Ю., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Чинилин А.В., Савин И.Ю.</copyright-holder><copyright-holder xml:lang="en">Chinilin A.V., Savin I.Y.</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/202">https://bulletin.esoil.ru/jour/article/view/202</self-uri><abstract><p>Приведены результаты цифрового картографирования содержания органического углерода в пахотных горизонтах почв и оценки точности получаемых моделей с использованием методов машинного обучения для участка Среднерусской возвышенности Воронежской области. Цифровое картографирование основывалось на 22 точках почвенного опробования, используемых для обучения и проверки моделей, а также на нескольких наборах переменных-предикторов, в качестве которых выступали цифровая модель рельефа, производные от нее и данные дистанционного зондирования различного пространственного разрешения. Для построения моделей пространственного варьирования исследуемого свойства использовали несколько методов, основанных на деревьях решений: ансамбль деревьев решений, бустинг регрессионных деревьев и байесовские регрессионные деревья. Оценку точности полученных картографических моделей определяли методом перекрестной проверки, при этом в качестве показателей точности использовали коэффициент детерминации, среднюю абсолютную ошибку и корень среднеквадратичной ошибки. По результатам моделирования выявлено, что с использованием переменных-предикторов, представленных цифровой моделью рельефа, ее производными и данными Landsat 8 удалось получить более устойчивые модели, причем коэффициент детерминации изменяется от 0.6 до 0.7, RMSEcv, т.е. ошибка прогноза от 0.5791 до 0.6520. Лучшая модель получена с помощью метода байесовских регрессионных деревьев; тогда как для переменных-предикторов, представленных цифровой моделью рельефа, ее производными и данными Sentinel 2 - от 0.47 до 0.55, ошибка прогноза от 0.7031 до 0.7909. Выявлено, что в описанных моделях по различным наборам данных наиболее значимыми оказывались разные переменные-предикторы.</p></abstract><trans-abstract xml:lang="en"><p>The results of digital mapping of organic carbon content within the arable horizons of soils and the assessment of obtained models accuracy with the use of machine learning methods for the area of Central Russian Upland in Voronezh Oblast are presented. The digital mapping was based on 22 points of soil samplings, applied for the learning and verification of models, and also on several sets of predictor variables. We took also digital elevation model, its derivatives and also remote sensing data of different spatial resolution as predictor variables. Several methods were used to create the spatial variability models for the investigated property based on the decision trees methods: random forest, boosting regression trees and Bayessian regression trees. The assessment of the models obtained accuracy was conducted by a method of cross-validation. As the accuracy indices we used the determination coefficient, mean absolute error and the root mean square error. The modelling results showed that the use of predictor variables presented by digital elevation model, its derivatives and Landsat 8 data we were able to obtain more sustainable models. The determination coefficient varied from 0.6 to 0.7, RMSEcv, i.e., the prognosing error varied from 0.5791 to 0.6520. Whereas, the best model was obtained with the method of Bayessian regression trees; whereas the predictor variables presented by the digital elevation model, its derivatives and Sentinel 2 data determination coefficient varied from 0.47 to 0.55, and the prognosing error varied from 0.7031 to 0.7909. It was revealed that in the described models according to different data sets the most significant were the various predictor variables.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>пространственное прогнозирование</kwd><kwd>цифровая модель рельефа</kwd><kwd>метод ансамблей деревьев решений</kwd><kwd>бустинг</kwd><kwd>spatial prediction</kwd><kwd>digital elevation model</kwd><kwd>random forest</kwd><kwd>boosting</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">Добровольский Г.В., Урусевская И.С. География почв. М.: Изд-во Моск. ун-та, 2015. 458 c.</mixed-citation><mixed-citation xml:lang="en">Добровольский Г.В., Урусевская И.С. География почв. М.: Изд-во Моск. ун-та, 2015. 458 c.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Жоголев А.В. 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