杭州西湖山区青冈种群结构和动态的研究

本文对杭州西湖山区不同生境中的青冈（Ｃｙｃｌｏｂａｌａｎｏｐｓｉｓ ｇｌａｕｃａ）种数的结构和动态进行了研究。结果表明：（１）各样地青冈种群呈现不规则的倒Ｊ型种群结构，存在明显的低龄缺损，为间歇型的种群，但种群仍将长期维持相对稳定；（２）种群分布格局呈一定的规律性，在发育初期为集群分布，而在中后期则转变为随机分布；（３）青冈种群可通过种子和无性系进行更新，在不同生境中，其更新的方式不同。

A STUDY ON THE STRUCTURE AND DYNAMICS OF CYCLOBALANOPSIS GLAUCA POPULATION AT HILLS AROUND WEST LAKE IN HANGZHOU

The study on the structure and dynamics of %C.glauca% populations was carried out at hills around West Lake, Hangzhou, with the methods of plant population ecology. On the basis of census of all individuals of the populations at different plots, the structure and dynamics of the populations were described. The result showed that %C.glauca% populations were stable intermittent populations, while the spatial patterns followed contagious type which changed with size classes of the populations. It was found that seedling or sapling class showed contagious type, while the small, middle and big tree classes exhibited radom types, reflecting the spatial patterns of the populations changed with the time during its development. Additionally, the seed and clonal regeneration or propagation of %C.glauca% populations in different habitats were studied and discussed, together with their ecology strategies. According to the results above|studied, the dynamic characteristics or adaptive mechanism of %C.glauca% populations was discussed respectively.