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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/S2587556622010137</article-id><article-id custom-type="elpub" pub-id-type="custom">sergeogr-1489</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>Роль весенне-летних засух в динамике аридизации засушливых земель Европейской территории России</article-title><trans-title-group xml:lang="en"><trans-title>Role of Spring–Summer Drought in the Dynamics of Aridization of Arid Lands in European Russia</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>Золотокрылин</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Zolotokrylin</surname><given-names>A. N.</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">zolotokrylin@igras.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>Черенкова</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Cherenkova</surname><given-names>E. A.</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">cherenkova@igras.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>Титкова</surname><given-names>Т. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Titkova</surname><given-names>T. B.</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">titkova@igras.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>98</fpage><lpage>108</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Золотокрылин А.Н., Черенкова Е.А., Титкова Т.Б., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Золотокрылин А.Н., Черенкова Е.А., Титкова Т.Б.</copyright-holder><copyright-holder xml:lang="en">Zolotokrylin A.N., Cherenkova E.A., Titkova T.B.</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/1489">https://izvestia.igras.ru/jour/article/view/1489</self-uri><abstract><p>По данным стандартизированного индекса осадков и эвапотранспирации исследована связь изменений годового увлажнения и весенне-летнего, а также летнего увлажнения в 12 субъектах РФ на юге Европейской территории России в 1901–2018 гг. Применение стандартизированного индекса осадков и эвапотранспирации для оценки изменений годового увлажнения обосновано установленной его тесной связью с индексом аридности. Выявлено, что изменения увлажнения в мае-июле более существенные, чем изменения увлажнения за летний сезон, были связаны с изменениями годового увлажнения. Изменения сезонного увлажнения в регионах Поволжья, Заволжья и Северо-Западного Прикаспия объяснили от половины до 65% изменчивости годового увлажнения, а в остальных субъектах юга Европейской территории России вклад сезонного увлажнения варьировал от 30 до 60%. Сравнение выделенных в каждом субъекте фаз аридизации и их систематизация по продолжительности показали, что изменение повторяемости весенне-летних и летних засух оказывает влияние на формирование чередующихся мультидекадных периодов усиления/ослабления аридизации климата на исследуемой территории. Для большинства рассмотренных субъектов характерно два-четыре сухих периода и два-три влажных периода. Установлено, что в начале и середине XX в. на юге Европейской территории России наблюдались более сухие условия весенне-летнего и летнего периодов. Условия повышенного сезонного увлажнения во второй половине XX в. сменились в начале XXI в. более сухой фазой. Показано, что сезонные засухи в сухие периоды являются надежным индикатором засушливого года: весенне-летние засухи – для Ставропольского края и летние засухи – для Волгоградской области и Краснодарского края.</p></abstract><trans-abstract xml:lang="en"><p>The relationship of changes in annual moisture with spring-summer and summer moisture in twelve federal subjects in the south of European Russia in 1901–2018 was analyzed using the Standardized-Precipitation Evapotranspiration Index (SPEI). The revealed close relationship between the annual SPEI and the aridity index justifies the usage of the SPEI to assess changes in annual moisture conditions. It was found that changes in moisture in May–July were associated with fluctuations in annual moisture more significantly than those in summer moisture. Changes in the seasonal moisture in the Volga, Trans-Volga and Northwestern Caspian regions explained 50–65% of the variability of annual moisture, while the contribution of the seasonal moisture varied from 30 to 60% in other federal subjects of the south of European Russia. The comparison of the aridization phases identified in each federal subject and their systematization by the duration showed that the change in the frequency of spring-summer and summer droughts affects the formation of alternating multi-decadal periods of increasing/decreasing climate aridization in the study area. Two-four dry periods and two-three wet periods are typical for most of the considered federal subjects. It was revealed that drier conditions of the spring-summer and summer periods were observed at the beginning and middle of the 20th century in the south of European Russia. The increasing seasonal moisture in the second half of the 20th century was replaced by a drier phase at the beginning of the 21st century. It was shown that droughts during dry periods are a reliable indicator of a dry year: spring-summer droughts in Stavropol krai and summer droughts in Volgograd oblast and Krasnodar krai.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>периоды усиления/ослабления аридизации</kwd><kwd>индекс аридности</kwd><kwd>стандартизированный индекс осадков и эвапотранспирации</kwd><kwd>засуха</kwd><kwd>засушливые земли</kwd><kwd>Европейская территория России</kwd></kwd-group><kwd-group xml:lang="en"><kwd>periods of intensification/weakening of aridization</kwd><kwd>aridity index</kwd><kwd>standardized precipitation evapotranspiration index</kwd><kwd>drought</kwd><kwd>arid lands</kwd><kwd>European Russia</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование проведено в рамках научной темы № 0127-2019-0010 (АААА-А19-119102890091-1).</funding-statement><funding-statement xml:lang="en">The study was conducted within the framework of the scientific theme no. 0127-2019-0010 (AAAA-A19- 119102890091-1).</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">Второй оценочный доклад. 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