沙地云杉天然更新幼苗、幼树呈群状分布，且死亡率高。
The results are as follows:(1) The seedlings and young trees take on a cluster distribution with a high, mortality.
不同的封禁方式客观地反映了人为作用对油松天然更新的干扰程度。
The effects resulted from different patterns of mountain closure objectively reflected the interference level of the human activities to Chinese pine natural regeneration.
同时提出了在类似条件下通过人工促进天然更新培育阔叶林和针阔混交林的设想。
Thispaper proposed the idea that broad - leafed forest and mixed forest could be bred by artificalfacilitation on the same condition.
不同的改造模式林分天然更新特征研究，对小陇山林区今后灌木林地改造具有一定借鉴意义。
The study of natural regeneration of shrub transformation model has significant to forest management of Xiaolongshan in the future.
苔藓植物作为许多生态系统的主要地被物，在维管植物天然更新过程中发挥着不容忽视的作用。
As the main ground cover of many ecosystems, bryophytes play an important role in the process of vascular plants' natural regeneration.
结果表明，影响该区森林天然更新的主要因素是海拔高度，其次是灌木层盖度和枯落物层的盖度。
The results show that the main factor that affects the natural regeneration is elevation, and the coverages of litter and brushwood were next.
因此建议采伐作业时不要连续采伐2株以上，以保持好的天然更新环境，维护森林生态系统的连续性和稳定性。
So it is better to cut down 1 or 2 trees once time, which can maintain the stability of the forest ecosystem.
通过对32个样带779个样方的调查，认为坡度、留母树否、灌木生长状况是影响皆伐后天然更新的主要因子。
Based on the survey from 32 belt-transects and 779 quadrats, it was found that slope, seed-tree, and shrub growth status are the main factors which affect natural regeneration on clear-cut sites.
结果表明，迹地清理方式对作业迹地土壤理化特性产生一定程度的影响，进而影响森林采伐后的迹地天然更新与苗木生长质量。
Through the research, it is explicit that slash disposal has also affected on the physical and chemical properties of soil on the harvested sites.
抚育间伐对森林生长的影响体现在很多方面，包括对林分生产力及其林分因子、林下植被及灌木、林下土壤和天然更新影响等方面。
The effects of thinning on forest growth embodied some aspects which mostly include the effects on stand productivity, stand factors, stand biomass, vegetation and shrubs under-forest, soil and so on.
抚育间伐对森林生长的影响体现在很多方面，包括对林分生产力及其林分因子、林下植被及灌木、林下土壤和天然更新影响等方面。
The effects of thinning on forest growth embodied some aspects which mostly include the effects on stand productivity, stand factors, stand biomass, vegetation and shrubs under-forest, soil and so on.
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