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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">vestnik-bio-msu</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Московского университета. Серия 16. Биология</journal-title><trans-title-group xml:lang="en"><trans-title>Vestnik Moskovskogo universiteta. Seriya 16. Biologiya</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0137-0952</issn><publisher><publisher-name>Lomonosov Moscow State University,  School of Biology</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">vestnik-bio-msu-802</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>ОРИГИНАЛЬНОЕ ИССЛЕДОВАНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>RESEARCH ARTICLE</subject></subj-group></article-categories><title-group><article-title>Углекислотный газообмен древесных растений в урбанизированных экосистемах</article-title><trans-title-group xml:lang="en"><trans-title>Carbon dioxide exchange of arboreal plants in urban ecosystems</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>Юзбеков</surname><given-names>А. K.</given-names></name><name name-style="western" xml:lang="en"><surname>Yuzbekov</surname><given-names>A. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юзбеков Ахмед Кадималиевич — доктор биологических наук, профессор кафедры общей экологии биологического факультета МГУ.</p><p>119234, Москва, Ленинские горы, д. 1, стр. 12, тел.:  8-495-939-52-54</p></bio><bio xml:lang="en"><p>Department of General Ecology, Faculty of Biology.</p><p>Leninskiye gory 1—12, Moscow, 119234</p></bio><email xlink:type="simple">uak2003@mail.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>Цзусюнь</surname><given-names>У.</given-names></name><name name-style="western" xml:lang="en"><surname>Zuxun</surname><given-names>W.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Цзусюнь У — магистр биологического факультета Университета МГУ-ППИ в Шэньчжэне.</p><p>518172, КНР, пров. Гуандун, Шэньчжэнь, р-н Лунган, ул. Жуи, д. 299, тел.:  +86-13581585864</p></bio><bio xml:lang="en"><p>Faculty of Biology.</p><p>Ruyi Rd. 299, Longgang district, Shenzhen</p></bio><email xlink:type="simple">wuzx009@163.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский государственный университет имени М.В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Университет МГУ—ППИ в Шэньчжэне</institution><country>Китай</country></aff><aff xml:lang="en"><institution>Shenzhen MSU-BlT University</institution><country>China</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>13</day><month>12</month><year>2019</year></pub-date><volume>74</volume><issue>4</issue><elocation-id>321–327</elocation-id><permissions><copyright-statement>Copyright &amp;#x00A9; Юзбеков А.K., Цзусюнь У., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Юзбеков А.K., Цзусюнь У.</copyright-holder><copyright-holder xml:lang="en">Yuzbekov A.K., Zuxun W.</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://vestnik-bio-msu.elpub.ru/jour/article/view/802">https://vestnik-bio-msu.elpub.ru/jour/article/view/802</self-uri><abstract><p>В условиях увеличения содержания углекислого газа в атмосфере изучение всех составляющих углеродного баланса в биосфере является актуальным. В статье представлены результаты исследований углекислотного газообмена хвои ели европейской (Picea abies L.) и псевдотсуги Мензиса (Pseudotsuga menziesii L.) в урбанизированной среде (на примере Москвы). Установлено, что осеннее потепление в 2018 г. способствовало продлению периода поглощения углекислого газа хвойными деревьями. Путем анализа влияния факторов внешней среды на фотосинтетическую активность хвои выявлено, что интенсивность фотосинтеза определялась только уровнем освещенности. Повышение температуры атмосферного воздуха в полуденные часы не влияло на интенсивность фотосинтеза, что, вероятно, связано с адаптацией растений к низким температурам воздуха в ночные и утренние часы. На основе регрессионного анализа определено, что зависимость ассимиляции СО2 от освещенности имела вид логарифмической кривой (коэффициент достоверности аппроксимации R2 равен 0,8). Выявлена видовая специфичность реакции фотосинтеза хвойных деревьев на экологические условия в осенний период: наибольшей устойчивостью к факторам внешней среды обладала ель европейская, фотосинтетическая активность которой была в 1,4 раза выше по сравнению с псевдотсугой Мензиса. Согласно расчетам, величина ассимиляции СО2 у ели европейской и псевдотсуги Мензиса превышала уровень светового дыхания соответственно в 3,6 и 2,7 раза, что свидетельствует о положительном углекислотном газообмене и существенной роли хвойных деревьев в регулировании углеродного баланса урбанизированной экосистемы.</p></abstract><trans-abstract xml:lang="en"><p>Research on all factors that contribute to the carbon balance in the biosphere is of paramount importance, owing to the current increase in air carbon dioxide content. This work presents data on the carbon dioxide exchange of the needles of the common spruce (Picea abies L.) and the douglas-fir (Pseudotsuga menziesii L.) in an urban environment as exemplified by Moscow. It was established that a warm spell in autumn contributed to the prolongation of the period of carbon dioxide uptake by coniferous trees. Our analysis of the impact of environmental factors on needle photosynthetic activity revealed that photosynthesis intensity only depends on the illumination level. The midday increase in air temperature failed to affect photosynthesis intensity, probably because the plants were adapted to low night and morning air temperatures According to the regression analysis data obtained, the dependence of СО2 assimilation on illumination represented a logarithmic curve; the approximation validity coefficient (R2) being 0.8. The impact of environmental conditions on conifer photosynthesis in autumn proved to be species-specific. The common spruce exhibited the maximum resistance to environmental factors, and its photosynthetic activity was 1,4 fold higher than that of the douglas-fir. Calculations revealed that the СО2 assimilation level in the common spruce and the douglas-fur exceeded the light respiration level 3,6- and 2,7-fold, respectively, which points to a positive carbon dioxide exchange “balance sheet” and highlights the important role of coniferous trees in regulating the carbon balance of an urban ecosystem.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>фотосинтез</kwd><kwd>дыхание</kwd><kwd>хвойные деревья</kwd><kwd>урбанизированная среда</kwd><kwd>температура воздуха</kwd><kwd>освещенность</kwd><kwd>углекислотный газообмен</kwd></kwd-group><kwd-group xml:lang="en"><kwd>photosynthesis</kwd><kwd>respiration</kwd><kwd>coniferous trees</kwd><kwd>urban environment</kwd><kwd>air temperature</kwd><kwd>illumination</kwd><kwd>carbon dioxide exchange</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">Endreny T., Santagata R., Perna A., De Stefano C, Rallo R.F., Ulgiati S. 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