Botanica Pacifica. A journal of plant science and conservation 2026. Preprint
Article first published online: 30 JAN 2026 | DOI: 10.17581/bp.2026.15105
A new phytosociological system of the class Ranunculo japonici-Betuletea ermanii Ohba ex Ohba 1973 nom. invers. et corr.: zonal and subalpine forests, woodlands, shrubs, and krummholz communities of Northeast Asia
Kirill A. Korznikov1,2
&
Pavel V. Krestov2 1 Institute of Botany CAS, Třeboň, Czech Republic
2 Botanical Garden-Institute FEB RAS, Vladivostok, Russia
We present a revised classification system for the class Ranunculo japonici–Betuletea er manii based on the analysis of 442 phytosociological relevés from Japanese Archipelago, Sakhalin, the Kuril Islands, and Kamchatka Peninsula. The resulting system recognizes 17 associations and two community types, arranged within two orders and three alliances. We clarify the nomenclatural status of previously published syntaxa, describe several new units, and designate types for previously published names in accordance with the International Code of Phytosociological Nomenclature. This revised classification provides a coherent and regionally consistent framework for Betula ermanii forests and shrub thickets of Alnus alnobetula s. l. in the insular sector of Northeast Asia and offers a foundation for future comparative, biogeographical, and conservation-oriented studies.
Корзников К.А., Крестов П.В. Новая фитосоциологическая система класса Ranunculo japonici–Betuletea ermanii Ohba ex Ohba 1973: зональные и субальпийские леса, редколесья, кустарники и криволесья Северо-Восточной Азии. Мы представляем пересмотренную классификационную систему класса Ranunculo japonici–Betuletea er manii, основанную на анализе 442 геоботанических описаний, выполненных в Японии, на Сахалине, Курильских островов и Камчатке. Выделено 17 ассоциаций и две безранговые единицы, объединённых в два порядка и три союза. Уточнён статус нескольких ранее опубликованных синтаксонов, описано несколько новых единиц растительности, для ранее опубликованных названий назначены номенклатурные типы в соответствии с Международным кодексом фитосоциологической номенклатуры. Предложенная классификация формирует согласованную и непротиворечивую систему синтаксонов для лесов из Betula ermanii и кустарниковых сообществ Alnus alnobetula s. l. в островном секторе Северо-Восточной Азии, что служит основой для дальнейших сравнительных, биогеографических и природоохранных исследований.
Keywords: phytosociology vegetation classification, stone birch forests, alder thickets, Japan, Kamchatka, Sakhalin, Northeast Asia, фитосоциологическая классификация растительности, каменноберезовые леса, ольховые заросли, Япония, Камчатка, Сахалин, Северо-Восточная Азия
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