Three Pinus tabulaeformis populations with tending,inter-felling and closed tending separately practiced were investigated to study the effects of these three forest practices on the age structures,static life tables,survival curves and species diversities of P.tabulaeformis populations in Huanglongshan Mountain and time series model was adopted to predict the dynamic population numbers of different P.tabulaeformis populations with different forest practices practiced.The results revealed that the three pop...