Composition Properties and Conservation Value of Woody Plants at Fagus Community in Fanjingshan National Nature Reserve

During September 2015 and October 2017, 6 permanent sample plots of 30m × 30m were established at Fagus communities in Fanjingshan National Nature Reserve, Guizhou province. Several investigations on woody plants showed that there were 178 species of 93 genera and 47 families of woody plants, indicating that it had significant difference with the same communities in temperate area where was single dominant species. Analysis of floristic elements demonstrated Fagus communities had characteristics of transit from tropical to temperate distribution, and woody plants had more tropical properties with ancient, complex and diverse community compositions. Analysis on synusia of woody plants indicated that Fagus communities had stable structure, the 4 first-level synusia were dominated by evergreen species, which enriched the evergreen composition of the communities in the world. Analysis on height and DBH of woody plants showed that the height distribution was an inverse J-shaped curve with clear layers and small DBH trees dominant, but larger or super larger trees had higher prominence. The investigation and analysis resulted that Fagus communities in Fanjingshan has world heritage value with its unique location and composition properties.