Species Diversity of Quercus aliena var. acuteserrata Natural Forest with Different Management Measures at Xiaolongshan

The characteristics and species composition of three Quercus aliena var.acuteserrata natural forest with different management measures were investigated by using fixed plots and sampling methods in Baihua Forest Farm at Xiaolongshan.Four forest species diversity indexes were introduced to compare the species diversity of tree layer,shrub layer and herb layer.The results showed that both the species composition and species diversity of shrub layer of all the three Q.aliena var.acuteserrata natural forest were rich and higher than that of tree layer and herb layer.In long-time closed Q.aliena var.acuteserrata natural forest,the species composition was abundance and the values of Shannon-Wiener index,Pielou index and Margalef index were the highest.The species composition and species diversity of different forest layer of Q.aliena var.acuteserrata natural forest with tending operation by near natural management were lower,however,the retained individual trees were larger in stand.The species composition and diversity of Q.aliena var.acuteserrata natural forest with tending operation by structural optimization management were moderate compared with other kind of Q.aliena var.acuteserrata natural forest.