天然更新是森林更新方式之一。利用森林自然恢复的能力在迹地上重新形成幼林的过程。可分为天然有性更新和天然无性更新两种方式。
... land restoration 释义：土地恢复 self restoration 释义：天然更新 full restoration 释义：完全恢复 ...
基于24个网页-相关网页
... 自然敌 Natural enemy 天然更新 Natural formation of woods 天然瓦斯 Natural gas ...
基于20个网页-相关网页
... 天然辐射 natural radiation 天然更新；天然再生 natural regeneration; natural reporduc-tion 天然抵抗性 natural resistance ...
基于8个网页-相关网页
群状天然更新作业法 Group-system of natural regeneration
羣状天然更新作业法 Group-system of natural regeneration
冠下天然更新 natural regeneration under canopy
人工促进天然更新 artificial aids to natural regeneration
天然林更新 natural forest regeneration
短栅形天然下种更新法 Strip-method in echelons
上方天然下种更新法 Natural regeneration under shelter-wood
The results of natural regeneration showed that the health status of Hippophae rhamnoides was worse as the age increasing.
天然更新结果表明随林龄的增加,沙棘林的健康状况逐渐下降。
参考来源 - 沙棘人工林衰败原因及其对林地土壤氮矿化速率的影响The spectral analysis of the population showed that there was a marked regularity of periodic in the process of natural regeneration of Taxus chinensis var. mairei, and it availed to the stabilazation of Form. Taxus chinensis var. mairei population.
南方红豆杉种群天然更新过程的动态，是通过南方红豆杉不同龄级的株数分布波动表现的，种群动态的谱分析表明，南方红豆杉种群表现出明显的大周期内有小周期的多谐波迭加特征，这种周期性的波动与林分更新有关，有利于南方红豆杉种群自我稳定性的维持。
参考来源 - 珍稀濒危植物南方红豆杉种群数量特征的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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.
应用推荐