Oak natural secondary forest 栎类天然次生林
oka natural secondary forest 栎类天然次生林
the natural secondary forest 天然次生林
Pinus massoniana natural secondary forest 马尾松天然次生林
secondary natural forest 天然次生林
natural secondary Pinus tablaeformis forest 天然次生油松林
natural secondary mixed forest 天然次生混交林
In this study, it takes reasonable measures to operate the natural secondary forest guide the operation of the various forest types and provide a theoretical basis for practical activities.
本研究为天然次生林采取合理的经营措施,指导各林分类型的经营实践活动提供理论依据。
参考来源 - 帽儿山地区天然次生林主要林分类型结构的研究The static life table and survival curve analyses showed that the survivorship states of the main species in natural secondary forest were consistent with those in plantation.
5.静态生命表和存活曲线的分析结果显示,同一种群在天然次生林和人工林中生存状况基本一致。
参考来源 - 秦岭油松人工林与天然次生林群落特征比较研究·2,447,543篇论文数据，部分数据来源于NoteExpress
A natural secondary forest zone spreads in the upstream of the reservoir.
库区上游分布有天然次生林带。
The community in shrub forest owned both the characteristics of natural secondary forest and farmland, its dominant species were yellow mouse and squirrel too.
灌木疏林林地群落兼有天然次生林的啮齿动物群落和农田啮齿动物群落的特性，优势种为达乌尔黄鼠和松鼠类。
Thus, the natural secondary forest in Taihang Mountain plays a very import role in maintaining the equilibrium of CO2 and O2, regulating climate, cleaning air and so on.
由此可见，太行山天然次生林在维持大气中O2和CO2平衡、调节气候、净化空气等方面起着相当重要的作用。
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