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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/S2587556624040096</article-id><article-id custom-type="edn" pub-id-type="custom">RPJRMY</article-id><article-id custom-type="elpub" pub-id-type="custom">sergeogr-2798</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>Региональные географические проблемы</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Regional Geographical Problems</subject></subj-group></article-categories><title-group><article-title>Пространственно-типологическая структура и организация летнего населения птиц Хэнтэй-Чикойского нагорья (Забайкальский край)</article-title><trans-title-group xml:lang="en"><trans-title>Spatial-Typological Structure and Organization of Summer Bird Assemblages of the Khentii-Chikoy Highland (Zabaykalsky Krai)</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>Равкин</surname><given-names>Ю. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Ravkin</surname><given-names>Yu. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Новосибирск</p></bio><bio xml:lang="en"><p>Novosibirsk</p></bio><email xlink:type="simple">yravkin@bk.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>Покровская</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Pokrovskaya</surname><given-names>I. 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-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Малков</surname><given-names>Е. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Malkov</surname><given-names>E. E.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Богомолова</surname><given-names>И. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Bogomolova</surname><given-names>I. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Новосибирск</p></bio><bio xml:lang="en"><p>Novosibirsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Институт систематики и экологии животных СО РАН<country>Россия</country></aff><aff xml:lang="en">Institute of Systematics and Ecology of Animals, Siberian Branch, Russian Academy of Sciences<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Институт географии Российской академии наук<country>Россия</country></aff><aff xml:lang="en">Institute of Geography, Russian Academy of Sciences<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru">Сохондинский государственный заповедник<country>Россия</country></aff><aff xml:lang="en">Sokhondo Nature Reserve<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>09</day><month>03</month><year>2025</year></pub-date><volume>88</volume><issue>4</issue><fpage>568</fpage><lpage>582</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Равкин Ю.С., Покровская И.В., Малков Е.Э., Богомолова И.Н., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Равкин Ю.С., Покровская И.В., Малков Е.Э., Богомолова И.Н.</copyright-holder><copyright-holder xml:lang="en">Ravkin Y.S., Pokrovskaya I.V., Malkov E.E., Bogomolova I.N.</copyright-holder><license 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/2798">https://izvestia.igras.ru/jour/article/view/2798</self-uri><abstract><p>Статья написана на основе данных, собранных с 1981 по 1985 г. и с 1989 по 2016 г. Ранее были проанализированы материалы по населению птиц по 1985 г. За прошедшие 30 лет модернизировано программное обеспечение для анализа данных. Поэтому цель статьи включает сопоставление результатов работ, полученных на первом этапе исследований и после добавления данных, а также обновления программ по их обработке. Работы выполнены в рамках нового направления – факторной зоогеографии. В нем широко использованы приемы прикладной статистики, которые для решения поставленных задач эффективнее ранее разработанных методов. После модернизации математического аппарата и дополнения выборки вновь собранными материалами прослеживается бóльшая степень обобщения представлений при значительном сходстве выявленных территориальных трендов в комплексах птиц региона. Это подтверждено неметрическим шкалированием.</p></abstract><trans-abstract xml:lang="en"><p>The paper deals with the structure and organization of summer bird assemblages in the Khentii-Chikoy Highland and presents the analysis of data collected in the 1981–1985 and 1989–2016 periods. Previously, only materials from the first period (up to 1985) were analyzed. Since then, the previously used software has been significantly updated. The present work is aimed at comparing the results obtained in the first stage of the studies with those obtained with the new data that have been supplemented and updated software used for their processing. The work has been carried out according to a relatively new line of investigation—the zoogeographical factor, using the techniques of applied statistics. The latter proved to be much more efficient in solving the problems than the previously used approach. Using the recently modernized mathematical apparatus and the samples supplemented with newly collected materials, a greater degree of generalization of the concept has been achieved, although the territorial trends revealed in the bird complexes are strikingly similar in both cases. The similarity is confirmed by the non-metric scaling.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>орнитокомплексы</kwd><kwd>классификация</kwd><kwd>структура</kwd><kwd>организация</kwd><kwd>факторы</kwd><kwd>оценки связи</kwd><kwd>кластерный анализ</kwd><kwd>шкалирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>ornithocomplexes</kwd><kwd>classification</kwd><kwd>structure</kwd><kwd>organization</kwd><kwd>factors</kwd><kwd>estimates of relationships</kwd><kwd>cluster analysis</kwd><kwd>scaling</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Исследования, послужившие основой для написания данной статьи, проведены по программе ФНИ государственных академий наук на 2021–2025 гг., проект № FWGS-2021-0002.</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>The studies on which the present paper is based were carried out within the framework of FNI for the State Academies of Sciences for 2021–2025, project no. 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