BAO Wei-Kai, LIU Zhao-Guang, LIU Chao-Lu, YUAN Ya-Fu, LIU Ren-Dong. Fifteen-Year Changes of Tree Layer in Secondary Castanopsis Schima Humid Evergreen Broad Leaved Forest in Central Subtropics of Western China[J]. Chin J Plan Ecolo, 2000, 24(6): 702-709.