Forestry Engineering Journal Forestry Engineering Journal Лесотехнический журнал 2222-7962 75856 10.34220/issn.2222-7962/2023.4/14 РусДендро-2023 RusDendro-2023 РусДендро-2023 Climatic influence on the age structure of tree stands in ecotone of the northern treeline on the Yamal Peninsula Влияние климата на возрастную структуру древостоев в экотоне северной границы леса на полуострове Ямал Бессонова Варвара Александровна Bessonova Varvara Aleksandrovna bessonova-varechka@mail.ru Кукарских Владимир Витальевич Kukarskih Vladimir Vital'evich voloduke@mail.ru

кандидат биологических наук;

candidate of sciences in biology;

 Дэви Надежда Михайловна Devi Nadezhda Mihaylovna nadya@ipae.uran.ru

кандидат биологических наук;

candidate of sciences in biology;

 Сурков Иван Александрович Surkov Ivan Aleksandrovich surkov_va@list.ru Сурков Александр Юрьевич Surkov Aleksandr Yur'evich surkov_au@mail.ru Горланова Людмила Аркадьевна Gorlanova Lyudmila Arkad'evna gorlanova@ipae.uran.ru

кандидат биологических наук;

candidate of sciences in biology;

 Хантемиров Рашит Мигатович Hantemirov Rashit Migatovich rashit@ipae.uran.ru

доктор биологических наук;

doctor of sciences in biology;

 Институт экологии растений и животных УрО РАН Екатеринбург Россия Институт экологии растений и животных УрО РАН Ekaterinburg Russian Federation Уральский федеральный университет им. Первого Президента России Б.Н. Ельцина Ural Federal University named First President of Russia B. Yeltsin Институт экологии растений и животных УрО РАН Екатеринбург Россия Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences Ekaterinburg Russian Federation Институт экологии растений и животных УрО РАН Екатеринбург Россия Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences Ekaterinburg Russian Federation Институт экологии растений и животных УрО РАН Екатеринбург Россия Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences Ekaterinburg Russian Federation Институт экологии растений и животных УрО РАН Екатеринбург Россия Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences Екатеринбург Russian Federation Институт экологии растений и животных УрО РАН Екатеринбург Россия Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences Ekaterinburg Russian Federation Институт экологии растений и животных УрО РАН Екатеринбург Россия Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences Ekaterinburg Russian Federation Уральский федеральный университет Екатеринбург Россия Ural Federal University Ekaterinburg Russian Federation 17 04 2024 17 04 2024 13 4 5 22 08 11 2023 26 12 2023 http://lestehjournal.ru/en/journal/2023/no-4-52-ch-2/climatic-influence-age-structure-tree-stands-ecotone-northern-treeline

На полуострове Ямал в пределах экотона северной границы древесной растительности изучена пространственно-временная динамика лесотундровых сообществ. В работе представлены результаты исследования 12 пробных площадей и более 1000 деревьев лиственницы сибирской и ели сибирской. На основе перекрестно-сдатированных древесно-кольцевых хронологий получены данные о возрастной структуре древостоев и их динамике за последние 150 лет. Динамические процессы в древостоях экотона северной границы леса наиболее выражены в редколесьях, где в середине ХХ века произошло резкое увеличение густоты древостоев. Корреляционный анализ частоты появления особей с инструментальными наблюдениями за климатическими переменными показал, что на выживание новых особей лиственницы и ели в различных типах древостоя в значительной степени влияет количество осадков июня – августа.

The spatial and temporal dynamics of forest-tundra communities was studied on the Yamal Peninsula within the northern treeline ecotone. The paper presents the results of surveying 12 sample plots and more than 1000 trees of Siberian larch and Siberian spruce. Based on cross-dated tree-ring chronologies, the age structure and dynamics of stands for the last 150 years were obtained. Dynamic processes in stands of the northern treeline ecotone are most pronounced in the sparse forests, where there has been a sharp increase in stand density since the middle of the 20th century. Correlation analysis of tree establishment time with instrumental observations of climatic variables showed that the establishment of new larch and spruce individuals in different stand types is significantly influenced by the amount of precipitation in June-August.

 экотон северной границы леса лиственница сибирская ель сибирская изменения климата лесотундровые сообщества полуостров Ямал northern treeline ecotone Siberian larch Siberian spruce climate change forest-tundra communities Yamal Peninsula Исследование выполнено за счет гранта Российского научного фонда № 21-14-00330 this study has been supported by the grant the Russian Science Foundation, RSF № 21-14-00330

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