Structure Dynamic of Quercus aliena var. acuteserrata Natural Forest on Xiaolongshan Spatial pattern of secondary Quercus aliena var. acuteserrata forests in the Qinling Mountains Distribution of main nutrient elements at different layers for the sharptooth oak forest ecosystem in Mt.Qinling History of Disturbance and Regeneration Strategies of Fagus engleriana and Quercus aliena var. acuteserrata Forests in Shennongjia, Hubei Province Analysis of biodiversity characteristics of Quercus aliena var.acuteserrata community on Mt.Xiaolong in Gansu Effects of thinning intensity on rain water chemistry of canopies and litters of Quercus aliena var. acuteserrata in Qinling Mountain Characteristics of seedlings regeneration in Quercus aliena var. acuteserrata secondary forests in Qinling Mountains Population Structure and Regeneration of Quercus aliena var. acuteserrata in Shennongjia Spatial Structure Characteristic of Quercus aliena var. acuteserrata Natural Forest in Xiaolongshan Response of Soil Respiration to Soil Temperature and Moisture Regimes in the Natural Forest of Quercus aliena var. acuteserrata Species Diversity of Quercus aliena var. acuteserrata Natural Forest with Different Management Measures at Xiaolongshan Individual Tree Size Distribution and Species Diversity of Quercus aliena var.acuteserrata Community in the West of Qinling Eco-environment and nutrient accumulation of sharptooth oak stands in southern slope of Mt. Qinling Characteristics of Soil Respiration in Quercus aliena var. acuteserrata Forest and Its Clear-Cutting Site in Dormant Period The regeneration of Quercus aliena var. acuteserrata: Acorn status, seedling pool and size structure TURNOVER PROCESS AND ENERGY CHANGE OF FINE ROOTS OF PINUS TABULAEFORMIS AND QUERCUS ALIENA VAR.ACUTESERRATA NATURAL FORESTS IN QINLING MOUNTAINS