sevinПОВОЛЖСКИЙ ЭКОЛОГИЧЕСКИЙ ЖУРНАЛPovolzhskiy Journal of Ecology1684-73182541-8963Федеральное государственное бюджетное учреждение науки Институт проблем экологии и эволюции им. А. Н. Северцова РАН; Товарищество научных изданий КМК.10.35885/1684-7318-2026-1-21-35sevin-723Research ArticleСтатьиДинамика пойменных лесов (сырые судубравы) центра Приволжской возвышенностиDynamics of floodplain woods (sudubrava) in the cen- tral part of the Volga UplandКудрявцевА. Ю.KudryavtsevА. Yu.

Алексей Ювенальевич: Кудрявцев, 

Лаборатория экологии наземных позвоночных степной зоны

410028; ул. Рабочая, д. 24; Саратов; 440031; ул. Окружная, д. 12а; Пенза

А. Yu. Kudryavtsev

Laboratory of Ecology of Terrestrial Vertebrates of the Steppe Zone

410028; 24 Rabochaya St.; Saratov; 440031; 12A Okruzhnaya St.; Penza

akydtaks@mail.ruСаратовский филиал Института проблем экологии и эволюции им. А. Н. Северцова РАН; Государственный природный заповедник «Приволжская лесостепь»РоссияSaratov Branch of A. N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences; State Nature Reserve “Privolzhskaya Lesostep”Russian Federation202616042026012135Copyright © Кудрявцев А.Ю., 20262026Кудрявцев А.Ю.Kudryavtsev А.Y.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://sevin.elpub.ru/jour/article/view/723

   Приведены результаты исследования динамики чрезвычайно редкого для центральной части Приволжской возвышенности типа лесных экосистем – сырой судубравы (С4). Исследования проводили на территории участка «Верховья Суры» заповедника «Приволжская лесостепь». Ход процесса изучали в возрастном ряду, выделенном в однородных лесорастительных условиях на основе принципов динамической классификации типов леса. В результате обработки данных таксации леса получены средние величины таксационных показателей древостоев для каждого класса возраста. Одновременно проведен анализ изменений всех компонентов насаждений. На его основе возрастной ряд был разделен на отдельные периоды и фазы. Тенденции изменения доли участия каждой лесообразующей породы в составе древостоя на разных возрастных стадиях описаны нелинейными уравнениями. Показано, что полученный возрастной ряд представляет собой ряд трансформации лесных сообществ. Нарушение хода лесообразовательного процесса привело к масштабной смене коренных насаждений на производные. После начала применения сплошнолесосечных рубок площадь, занятая лиственными деревьями, постоянно росла. Следствием масштабного применения рубок промежуточного пользования, санитарных и добровольно-выборочных рубок стало формирование изреженных сосновых древостоев. Одновременно происходила и трансформация нижних ярусов сообществ. Эти факторы вызвали ухудшение условий естественного возобновления сосны (Pinus sylvestris L.). В результате, к настоящему времени возможность формирования сосновых древостоев путем естественного возобновления сильно затруднена.

   The article presents the results of our study on the dynamics of a forest ecosystem type extremely rare in the central Volga Upland, namely, wet sudubrava (C4). The study was conducted in the Upper Sura section of the State Nature Reserve “Privolzhskaya Lesostep”. The process was examined in an age series identified in homogeneous forest growth conditions based on the principles of dynamic classification of forest types. Forest inventory data were processed to obtain average values of forest stand taxonomy indicators for each age class. Changes in all stand components were analyzed simultaneously. Based on this analysis, the age series was divided into individual periods and phases. Trends in the share of each forest-forming species in the stand composition at different age stages are described by nonlinear equations. It is shown that the resulting age series represents a transformation series of forest communities. Disruption of the forest formation process led to a large-scale replacement of native stands with derivatives. After the introduction of clear-cutting, the area occupied by deciduous trees steadily increased. The large-scale use of intermediate, sanitary, and voluntary selective logging resulted in the formation of thinned pine stands. Concurrently, the lower layers of communities were transformed. These factors worsened the conditions for natural regeneration of pine (Pinus sylvestris L.). As a result, the formation of pine stands through natural regeneration is now greatly hampered.

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The authors declare that there are no conflicts of interest present.