Bray-Curtis community similarity index is used to deal with the community similarity and cluster analysis. The result shows that Chitons community in rocky intertidal zone of the islands in south Zhejiang can be clustered into two types.

• 用Bray Curtis群落相似性系数聚类分析 ,浙南岛屿潮间带石鳖群落可聚为两大类型。