蒙椴
1.CONCLUSION Compound Ⅰ~Ⅴ,Ⅶ and Ⅷ are isolated from Tilia genus for the first time.
2.This paper studied the distribution,flora,physiognomy,construction,regeneration and succession dynanic of Tilia mongolica forest in Wulingshan mountain and advanced measure of protecting and managing forest community.

