Abstract: On basis of investigation, the community structure of Evergreen Broad-leaved Forests Dominated by Cyclobalanopsis glauca and its quantity characteristics in the northern regions of Zhejiang province were studied. The results show:These communities have obvious lay-structure;The community similarity of the same regions is larger than the different region's;the size structure of Cyclobalanopsis glauca have two types:the spindle-like form and the atypical pyramid-like form structure;the distribution pattern of Cyclobalanopsis glauca is clumped type in general;and in time serial, it is from clump to random。

Key words: community structure, similarity, size structure of Cyclobalanopsis glauca, distribution pattern