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对长白山林区受不同程度干扰（择伐）的红松林与红松林被皆伐后形成白桦次生林的植物多样性进行了研究，结果表明，白桦群落及其下木层的多样性高于各类型的红松林。不同类型的红松林中，以轻度干扰的红松原始群落及其立木层和草本层的多样性最大，这是群落长期演容、物种适应的结果。白哗群落处于演替的第二阶段，群落中侵入了较多的耐荫树种，加之林内光照条件好，故而有发达的下木层，致使树种的多样性很高。本文还分析了多样性与均匀度及生境条件的关系。
The species diversity of Korean pine and korean pine forests, which were disturbed by different degrees of cutting (selective cutting) in Changbai Mountain, were studied by the plantation of secondary Birch birch plants after clear cutting. The results showed that the diversity of the birch community and its understory was higher than that of the various types Red pine forest. Among the different types of Korean pine forests, the communities with minor disturbances had the most diversity in the primitive community of Pinus koraiensis and its standing layer and herb layer, which was the result of long-term plant community and species adaptation. The Waxing community is in the second stage of succession. More shade-tolerant species are intruded into the community. In addition, the light conditions in the forest are good, therefore, the developed understory layer leads to a high diversity of tree species. The paper also analyzes the relationship between diversity and evenness and habitat conditions.