采用典型取样的方法, 对大亮子河国家森林公园臭冷杉-红松林和以白桦为主的阔叶混交林植被群落物种多样性进行了调查分析. 结果表明, 在臭冷杉-红松林8块样地内共有维管植物66种, 隶属34科56属, 阔叶混交林6块样地内共有维管植物77种, 隶属33科62属. 从不同群落类型同一植被层看, 臭冷杉-红松林草本层物种丰富度指数小于阔叶混交林, 两种群落类型乔木层和灌木层各物种多样性指数差异不明显; 而草本层差异明显, 阔叶混交林物种丰富度指数、 Simpson指数和Shannon-Wiener指数较高, 仅臭冷杉-红松林的Pielou均匀度指数略高. 从同一群落类型不同植被层看, 两种群落类型的物种丰富度指数与Shannon-wiener多样性指数均表现为草本层>乔木层>灌木层; Simpson指数均为乔木层>灌木层>草本层; 物种均匀度指数均表现为灌木层高于乔木层和草本层, 其中臭冷杉-红松林草本层均匀度指数略高于乔木层, 而阔叶混交林中正好相反.%Traditional sampling method was used to investigate the species diversity of Abies nephrolepis-Pinus ko-raiensis forest and broadleaf mixed forest dominated by birch forest in Daliangzi River National Forest Park.The re-sults showed that, there were 66 vascular plants in 8 sample plot, belonging to 56 genera and 34 families, in Abies nephrolepis-Pinus koraiensis forest.And there were 77 vascular plants in 6 sample plot, belonging to 62 genera and 33 families, in broadleaf mixed forest.The vertical structure in two communities was tree layer, shrub layer and herbaceous layer.In terms of different communities in a same vegetation layer, even the species richness index of Abies nephrolepis-Pinus koraiensis forest was lower than that of broadleaf mixed forest , the species diversity index of the tree layer and shrub layer was not obvious between two communities .The species diversity difference of herba-ceous layer was obvious , with higher species richness index , higher Simpson index , higher Shannon-Wiener index in broadleaf mixed forest and higher Pielou index in Abies nephrolepis-Pinus koraiensis forest .In terms of different layers in the same community , species richness index and Shannon-wiener index showed a tendency of herb layer>tree layer>shrub layer, with Simpson index of tree layer>shrub layer>herb layer, and Pielou index of shrub layer was greater than that of tree layer and herb layer , and the Pielou index of herb layer was slightly higher than that of tree layer in Abies nephrolepis-Pinus koraiensis forest , while that was the opposite in the broadleaf mixed forest .
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