The former study of P. yunnanensis was focused on genetic improvement, forest protection, exploitation and utilization of non-timber resources, silviculture and so on, the basic study of approaching-nature forest management of pure stand has not been reported.
但是,云南松以前的研究主要集中在遗传改良、森林保护、非木材资源开发利用和营林等方面,对纯林近自然化改造的基础研究还未见报道。
参考来源 - 云南松群落动态特征及其在近自然改造中的应用·2,447,543篇论文数据,部分数据来源于NoteExpress
以上来源于: WordNet
N the branch of forestry that is concerned with the cultivation of trees 造林学
And the effects of the site type, silviculture density and stand age on the above indexes are studied.
并分别立地类型、造林密度、林分年龄对这些指标的影响进行了研究。
The lower limit of forest price should be determined by the current cost of silviculture and reevaluation of capital.
认为林价下限的计算应以现行营林成本和重置完全资金占用为依据;
The present situations and management models of seedling production, silviculture and fire prevention in Turkey were described.
主要介绍了土耳其林木种苗生产、营造林和森林防火现状和管理模式。
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