缙云山自然保护区风灾迹地恢复群落的数量分类

Numberical classification of the wind-damaged slash in the restorable community of Jinyun Mountain Nature Reserve

以缙云山自然保护区风灾迹地恢复群落样地中乔木层树种的重要值为指标,采用纸条排队法、群落相似系数分类法、最近邻体法、组平均法对缙云山自然保护区风灾迹地恢复群落样地进行数量分类。结果表明,4种分类结果基本相似,所调查的5个风灾迹地恢复群落样地分为小叶栲群系、四川大头茶+杉木群系和慈竹群系等3个群系。小叶栲群系和四川大头茶+杉木群系正处于常绿阔叶林的形成期,逐渐向稳定的顶极阶段过渡,只有慈竹群系受到人为干扰较大,该群系表现出物种相对单一,如加强管理,该群系将会逐渐向稳定的顶极阶段过渡。

According to the important values of species in tree layers, numberical analysis for the wind-damaged slash in the restorable community of Jinyun Mountain Nature Reserve was carried out by four methods including the tabular comparison of data, the tabular comparison of similarity coefficient, the nearest method and the group-average method of hierarchical agglomerative classification. The results show that results with four methods are similar, the 5 wind-damaged slash in the restorable communities are divided into 3 formations by 5 investigation. They are Castanopsis carlesii formation, Gordonia acuminata and Cunninghamia lanceolata formation and Neosinocalamus affinis formation. The Castanopsis carlesii formation, and Gordonia acuminata ＆ Cunninghamia lanceolata formation are in their processing stage, should be in their stable stage gradually, and the Neosinocalamus affinis formation shows the species is simple due to human influence. However, it could keep stable stage if management is enhanced.