中文摘要：

基于山地杉木人工林择伐长期固定样地实测数据，构建了单木胸径生长模型，以及树高、枝下高、冠幅与胸径的关系模型，结合OnyxTREE和3DsMAX技术，实现了不同强度择伐下，不同时期的林分生长动态仿真，可直观、生动地观察杉木的生长状态，对山地杉木人工林的科学经营决策具有实用价值。

英文摘要：

Based on the long- term tracking retest data to construct diameter at breast height（DBH） increment model of individual trees growing for the mountain Chinsese fir plantation and the relationship model of the tree height（H） ,height at clear bole（HCB）,crown width（CW） with DBH. Then use Onyx TREE and 3Ds MAX to a- chieve the stand growth dynamics simulation of different growth stages in different selective cutting intensity sam- ples. The results show that the realization of stand growth simulation have more intuitive and vivid effect, and have important practical value and realistic meaning for the management of the mountain Chinses fir plantation.