天然次生林是指天然森林被砍伐后，树根生出来幼树组成森林，针对原生林，称之为次生林；也就是最初的原始森林遭到破坏后，再次自然生长繁衍所形成的天然植物群落。就是说它不是人工的，而是大自然生命体的一种自我修复。
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Therefore, the secondary forests that developed from those disturbed forestshave become the most important natural resources in this region.
由原始林破坏后发展起来的天然次生林已成为海南岛最重要的森林资源。
参考来源 - 海南岛退化热带森林植被恢复生态学研究The research provides foundation for maintaining the stability of soil ecosystems and long-term site productivity through Comparing and analyzing the evolution and degradation of soil ecosystems between plantations and secondary natural forest.
比较和分析了人工林与椴栎天然次生林土壤生态系统的进化和退化过程，为确定控制土壤生态系统的稳定性和维持立地长期生产力提供了依据。
参考来源 - 九龙山不同森林类型立地长期生产力研究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
主要研究了辽宁东部山区天然次生林林冠截留降雨、林地土壤的渗透性能和贮水能力。
The canopy interception for rainfall, the infiltration and water-holding capacity of soil of main original secondary forest types in eastern mountain areas of Liaoning province were studied.
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。
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.
在相同的立地条件下，天然次生林和混交林具有更好的维持地力作用和更高的水源涵养功能。
Under the similar site condition, the secondary forest and the mixed plantations had greater water conservation function and better maintenance of soil fertility than the pure stands did.
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