Multivariate analysis and environment interpretation of the Quercus natural secondary forest in Baotianman Nature Reserve
宝天曼栎类天然林群落环境解释的多元分析

Based on the survey in 32 plots in Baotianman Nature Reserve,the total 21 indices were selected to represent three types of factors including plant communities,terrain and environment characteristics.Principle component analysis,cluster analysis and canonical correlation analysis were employed to study the relationships among three types of factors.Principle component analysis showed that the elevation and soil thickness can be used as sensitive indices to describe plant change.Cluster analysis indicated th...