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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Lesnoy Vestnik / Forestry Bulletin</journal-id><journal-title-group><journal-title xml:lang="en">Lesnoy Vestnik / Forestry Bulletin</journal-title><trans-title-group xml:lang="ru"><trans-title>Лесной вестник / Forestry Bulletin</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2542-1468</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">706984</article-id><article-id pub-id-type="doi">10.18698/2542-1468-2023-5-149-159</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Ecology and forest protection</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Экология и защита леса</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Weather conditions favouring cone initiation for Siberian stone pine (<italic>Pinus sibirica</italic> Du Tour)</article-title><trans-title-group xml:lang="ru"><trans-title>Погодные условия, способствующие заложению шишек у сосны кедровой сибирской (<italic>Pinus sibirica</italic> Du Tour)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Popov</surname><given-names>Aleksandr V.</given-names></name><name xml:lang="ru"><surname>Попов</surname><given-names>Александр Владимирович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Engineer of the 1st category Associate of the laboratory of dendroecology</p></bio><bio xml:lang="ru"><p>инженер 1 категории лаборатории дендроэкологии</p></bio><email>tomskceltic@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Velisevich</surname><given-names>Svetlana N.</given-names></name><name xml:lang="ru"><surname>Велисевич</surname><given-names>Светлана Николаевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Senior Research Associate of the laboratory of dendroecology</p></bio><bio xml:lang="ru"><p>ст. науч. сотр. лаборатории дендроэкологии</p></bio><email>s_n_velisevich@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Institute of Monitoring of Climatic and Ecological Systems of the Siberian Branch of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">ФГБУН «Институт мониторинга климатических и экологических систем Сибирского отделения Российской академии наук» (ИМКЭС СО РАН)</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-10-15" publication-format="electronic"><day>15</day><month>10</month><year>2023</year></pub-date><volume>27</volume><issue>5</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>149</fpage><lpage>159</lpage><history><date date-type="received" iso-8601-date="2026-04-29"><day>29</day><month>04</month><year>2026</year></date><date date-type="accepted" iso-8601-date="2026-04-29"><day>29</day><month>04</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Popov A.V., Velisevich S.N.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Попов А.В., Велисевич С.Н.</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Popov A.V., Velisevich S.N.</copyright-holder><copyright-holder xml:lang="ru">Попов А.В., Велисевич С.Н.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.eco-vector.com/2542-1468/article/view/706984">https://journals.eco-vector.com/2542-1468/article/view/706984</self-uri><abstract xml:lang="en"><p>Seed production in 25 trees of Siberian stone pine (age 180–200 years) over a 28-year period was examined to determine how the weather factors and their period influence strobilus initiation. Since floral induction in Siberian stone pine occurs in a short period of time only during three weeks at the end of summer, the dynamics of temperature and precipitation during the thirty-days interval, starting from 20 July, were analysed in the present work. The average monthly temperature in July and August, as well as the amount of precipitation in July and August had a weak influence on the number of the cone initiation. There was also a weak influence of weather parameters calculated for shorter time intervals by ten-day interval. Air temperature in the first and second ten-day intervals of July had a weak positive effect on cone initiation, but from the third ten-day interval of this month and throughout August, excessive heat began to negatively affect cone initiation. The only significant negative correlation was found for the temperature of the first ten-day interval of August. This indicates increased sensitivity of initiating cone primordia to air temperature and exactly in this time interval. The example of Siberian cedar pine shows that cool weather during the initiation of macrostrobils favours their abundance. Optimal conditions for cone initiation in Siberian pine are average daily temperatures not higher than +17.5 °C in the first ten-day interval of August. The results of the study expand the understanding of the mechanisms of climatic regulation of generative morphogenesis and are important not only for understanding the fundamental basis of the fruiting process, but also for yield forecasting and management.</p></abstract><trans-abstract xml:lang="ru"><p>Рассмотрено семеношение у 25 деревьев сосны кедровой сибирской (возраст 180–200 лет) за 28-летний период для установления погодных факторов и периода их влияния на инициацию стробилов. Поскольку флоральная индукция у сосны кедровой сибирской происходит в короткий промежуток времени — в течение трех недель в конце лета, в настоящей работе анализировались динамика температуры и осадков в течение трех декад, начиная с 20 июля. Среднемесячная температура июля и августа, а также сумма осадков в июле и августе слабо влияли на число заложившихся шишек. Также отмечено слабое влияние погодных параметров, рассчитанных для более коротких промежутков времени — по декадам. Температура воздуха в первой и второй декадах июля оказывала слабое положительное влияние на заложение шишек, но с третьей декады этого месяца и в течение всего августа излишнее тепло стало отрицательно влиять на заложение шишек. Единственная значимая отрицательная корреляция установлена для температуры первой декады августа. Это указывает на повышенную чувствительность инициирующихся примордиев шишек к температуре воздуха и именно в этот временной интервал. На примере сосны кедровой сибирской показано, что прохладная погода во время инициации макростробилов способствует их обилию. Оптимальными условиями для заложения шишек у сосны кедровой сибирской являются среднесуточные температуры не выше +17,5 °C в первой декаде августа. Результаты исследования расширяют представления и механизмах климатической регуляции генеративного морфогенеза и важны не только для понимания фундаментальных основ процесса плодоношения, но и для прогнозирования урожаев и управления ими.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Siberian stone pine</kwd><kwd>Pinus sibirica (Pinaceae)</kwd><kwd>cone initiation</kwd><kwd>temperature</kwd><kwd>precipitation</kwd><kwd>inter-annual variability</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>сосна кедровая сибирская</kwd><kwd>Pinus sibirica (Pinaceae)</kwd><kwd>заложение шишек</kwd><kwd>температура</kwd><kwd>осадки</kwd><kwd>межгодовая изменчивость</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Российский научный фонд</institution></institution-wrap><institution-wrap><institution xml:lang="en">Russian Science Foundation</institution></institution-wrap></funding-source><award-id>23-26-00080</award-id></award-group><funding-statement xml:lang="en">The work was financially supported by RNF, grant No. 23-26-00080.</funding-statement><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке РНФ, грант № 23-26-00080.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Pearse I.S., Koenig W.D., Kelly D. 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