文献类型：期刊文献

中文题名：极小种群野生植物坡垒的种群结构与数量动态研究

英文题名：Population Structure and Quantitative Dynamics of a Wild Plant with Extremely Small Populations Hopea hainanensis

作者：罗文[1] 许涵[2] 李艳朋[2] 谢春平[3] 卢春洋[2,4] 梁春生[1] 苏红华[1] 李自力[1]

第一作者：罗文

机构：[1]海南热带雨林国家公园管理局尖峰岭分局,海南乐东572542;[2]中国林业科学研究院热带林业研究所,海南尖峰岭森林生态系统国家野外科学观测研究站,广东广州510520;[3]琼台师范学院,海南海口571100;[4]海南大学林学院,海南海口570228

年份：2023

卷号：36

期号：2

起止页码：169-177

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2020】；CSCD:【CSCD2023_2024】；

基金：海南省自然科学基金资助(421RC1108);国家科技基础资源调查项目“不同气候带典型山区资源环境和生物多样性调查”(2019FY101600)。

语种：中文

中文关键词：尖峰岭;坡垒;种群动态;时间序列预测;增补限制

外文关键词：Jianfengling;Hopea hainanensis;population dynamic;time series forecasting;recruitment limitation

分类号：Q948.1

摘要：[目的]极小种群野生植物坡垒(Hopea hainanensis Merr. et Chun)为国家一级重点保护植物,是海南热带雨林的表征种,对其种群结构、数量动态变化特征和未来发展趋势开展研究,有助于为保护管理提供科学依据。[方法 ]利用静态生命表、存活曲线以及时间序列预测模型等种群统计方法,对分布于海南尖峰岭地区的坡垒种群结构和动态特征进行分析。[结果 ](1)尖峰岭野生坡垒种群结构基本呈倒“J”型,其中,Ⅰ龄级的幼苗个体占比高达95.24%。(2)尖峰岭地区原始林和次生林中的坡垒种群均表现为增长型,但在由幼苗转变为幼树的过程中存在增补限制,导致其成体数量极少。(3)原始林中坡垒种群的自我更新能力低于次生林,但次生林中坡垒种群的恢复过程更易受外部干扰的影响。(4)在保持尖峰岭地区现有坡垒种群和生境不被破坏的前提下,原始林和次生林的坡垒种群数量在经历2~5个龄级的时间后均具备较好的恢复潜能。[结论 ]尖峰岭地区仍保存有一定数量的野生坡垒个体,在加强保护的前提下,亟待破解自然状态下坡垒幼树缺乏的难题。
[Objective]Hopea hainanensis is not only a Wild Plant with Extremely Small Populations but also a national grade first-level key protected plant and a representative species of tropical rainforest in Hainan,China.Here,the population structure,dynamic change characteristics,and future development trend of Hopea hainanensis were explored for providing a scientific basis for protection and management.[Methods]In this study,the population structure and dynamic characteristics of Hopea hainanensis distributed in Jianfengling,Hainan was analyzed using population statistics,including static life table,survival curve,and time series prediction model.[Results](1)The population structure of wild Hopea hainanensis in Jianfengling showed an inverted J shape,and the number of seedlings(age class I)accounted for 95.24%of the total individuals.(2)The slop populations in the primary forest and secondary forest in the Jianfengling area tended to grow,but there was a limitation in the growth of young trees during the transition from seedlings to saplings,resulting in a very small number of adults.(3)The regeneration ability of Hopea hainanensis population in primeval forests was lower than that in secondary forests,but the recovery process in secondary forests was more susceptible to external disturbance.(4)The Hopea hainanensis population in primeval forests and secondary forests would recover steadily after 2-5 age classes if the existing Hopea hainanensis population and their habitats in Jianfengling were well protected.[Conclusion]There are still a certain number of wild saplings in Jianfengling,Hainan.It is urgent to strengthen the protection of the existing wild Hopea hainanensis populations and promote the transformation of the seedlings to saplings in the natural state.