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以吉林省汪清林业局金沟岭林场的阔叶红松原始林、阔叶红松过伐林与人天混落叶松林为研究对象,采用方差/均值比率法为主的聚集度计算方法对林分更新种的数量特征和分布格局进行研究。结果表明:阔叶红松原始林更新苗最多,过伐林次之,人天混落叶松林最少;阔叶红松原始林与过伐林的更新幼苗大小级结构均属于稳定型种群,人天混落叶松林更新幼苗大小级结构属于下降型种群;3种森林类型的幼苗幼树的分布格局均为聚集分布,聚集程度由强到弱为:过伐林>人天混落叶松林>原始林。该研究可为过伐林和人工林的“近自然化”经营提供经验与依据。
Taking the broad-leaved Korean pine broad-leaved forest, Broad-leaved Korean pine and Larix gmelinii mixed forest in Jingouling Forest Farm of Wangqing Forestry Bureau of Jilin Province as the research object, the calculation method of variance-average ratio Quantitative characteristics and distribution pattern. The results showed that the virgin forest of Broad-leaved Pinus koraiensis was the most regenerated, followed by over-deforested, and the population of Pinus tabulaeformis-Pinus tabulaeformis was the least. The size-class structure of the regenerated seedlings of both virgin-coniferous forests and over-cut forests belonged to the stable population. The size-class structure of the seedlings belongs to the descending population. The seedling saplings of the three forest types are all clustered and the degree of aggregation is from strong to weak: over-cutting forest> man-day mixed forest> virgin forest. This study provides experience and evidence for the “near-natural” management of over-cut forests and plantations.