Environmental interpretation on distribution of forest vegetation and main tree species in Baishilazi Nature Reserve

The paper analyzed relationship between distributions of vegetation and major tree species and environment factors.In Baishilazi Nature Reserve,eight environment factors and vegetation and 44 tree species were surveyed in 56 plots.Canonical Correspondence Analysis(CCA) revealed that altitude,slant grade,proportion of soil organic matter,canopy density and soil acidity were main factors influencing distribution of vegetation and major tree species.Based on Two-Indicative-Species-Analysis(TWINSPAN),eight site groups were identified on site-environment variable two dimensions graph,the main components of communities and their relationship with environmental factors were analyzed.