【摘要】 通过对天然更新阔叶混交林的林分密度、树种组成、径阶结构和主要树种生长规律4个方面探讨天然更新阔叶混交林林木更新特征，为火烧迹地植被恢复和天然林保护提供理论基础。结果表明，其阔叶红松林火烧后80 a,天然更新形成的林分主要树种是榆树和白桦，虽公顷蓄积量不低，但经济价值不高，且缺少针叶树种，如要加快林分的演替进程，需要采用人工促进天然更新或人工引入本土红松的措施，加速火烧迹地向顶极群落的恢复。更多还原

【Abstract】 This study explores the natural regeneration characteristics of broadleaf mixed forests in burned areas from four aspects: stand density, species composition, diameter class structure, and growth patterns of major tree species, providing a theoretical basis for vegetation restoration and natural forest protection in burned areas. The results show that 80 years after a fire, the main species in naturally regenerated stands are elm(Ulmus pumila) and birch(Betula platyphylla), with a hectare stock volume that is not low but has low economic value and lacks coniferous species. To accelerate the succession process of the forest stand, measures such as artificial stimulation of natural regeneration or the introduction of native Korean pine are needed to restore the burned areas to climax communities.更多还原