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用相邻格子法和种子的萌发试验等方法，研究了浙江建德青冈常绿阔叶林的建群种──青冈种群的大小级结构、分布格局和种子库及其命运。从７龄至４０龄，１２月下旬地表青冈种子的量为０～９５万粒／ｈｍ２。种子落至地表前后，受到动物的大量捕食及微生物的感染，而种子的萌发需适度的光照条件。青冈种群从采伐迹地上以残存树桩的无性繁殖快速生长起来。因初期尚未产生大量种子以及此后的种子库遭严重破坏等原因，７～４０龄种群的低龄级个体缺损明显，使其大小级结构呈纺锤形。为了充分利用空间，种群的基株有一定数量的分株和萌生枝长成。初期种群的分布格局多为随机型，这种格局因分株和萌生枝的产生有向集群分布发展的趋势。幼苗的分布多为集群型；幼树因缺损严重多呈随机分布；小树和中树呈随机分布和集群分布的样地数差不多；大树数目极少，为随机分布。因环境条件的不同，种群及其各大小级的分布格局会有一定的变化。
Using the method of adjacent grids and the germination test of seeds, the size-class structure, distribution pattern, seed bank and fate of the population of Cyclobalanopsis glauca were studied. From the seventh to the 40th instar, the amount of the Crosses was 0.5-9.5 million / hm2 in late December. Before the seed falls to the surface, it is subject to the predation of animals and the infection of microorganisms, and the germination of the seed needs moderate light conditions. Cunninghamia lanceolata populations grow rapidly from cuttings on the vegetative propagation of remaining tree stumps. Due to the fact that a large number of seeds have not been produced in the early stage and that the seed bank has been severely damaged since then, the age-specific individuals of the 7th-40th age group have obvious defect and their size structure is spindle-shaped. In order to make full use of space, the population of the base plant has a certain number of ramets and sprouting branches grow into. Most of the initial population distribution pattern is random, this pattern due to ramets and sprouting branches to produce a directional cluster distribution of the development trend. The distribution of seedlings was mostly cluster type. The young trees were randomly distributed due to the serious deformities. The number of sample plots for random distribution and cluster distribution of tree and middle tree were almost the same. The number of trees was very small and distributed randomly. Due to the different environmental conditions, the distribution pattern of the population and its major and minor classes will change to some extent.