Investigation and Analysis on Community Structure of Natural Forest in Jiande

Investigations were conducted on stand structure of natural forest with different dominance of Nanmu in Shouchang Forest Farm of Jiande,Zhejiang province on August 2015. Discussion was made on their strategy of management. The results showed that species composition at tree layerwas relatively simple in the stand with dominance of Nanmu and the diameter class of Nanmu was normal distribution with absolutely dominant attree layer but few small diameter individual. After swamping and weeding, saplings of Nanmu were fewer at shrub layer, but more seedlings in herblayer. According to close-to-nature forestry, the investigated stand needs to take crop tree release in place of common swamping. In the natural standwith Nanmu as associated tree, there was few number and large diameter class individuals. The diameter class distribution Nanmu presented theinverted J-shaped. However, the important values of Nanmu at shrub and herb layer were the biggest, indicating that Nanmu had good ability tonatural regeneration. Suggestions were made on crop tree release of Nanmu in the stand.