为了恢复、提高或改善防护林和特用林的生态功能、进而为林分的更新创造良好条件所进行的采伐
林业生产和经营活动包括育苗、造林、经营管理、保护、森林采伐和更新以及林产品加工等。
Forestry operation and production includes seedling, forestation, operation management, protection, forest harvesting and renewal and forest product processing, etc.
结果表明：采伐强度与林分年平均蓄积生长量和更新株数间呈抛物线关系。
Results showed that the relation equations was parabola equation between cutting intensities and annual average increment and annual average number of regeneration individuals of stands.
本文讨论了热带山地雨林采伐更新方式的生态环境因子。
The ecological factors influenced the way of cutting and regeneration of the tropical mountain rain forest was discussed.
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