海南尖峰岭热带雨林方枝蒲桃的种群结构特征与动态分布

XIA Lian; XU Han; LI Yan-peng; QIN Wen-hao

doi:10.3969/j.issn.1009-7791.2024.01.006

亚热带植物科学 >

2024 , Vol. 53 >Issue 1: 46 - 52

DOI: https://doi.org/10.3969/j.issn.1009-7791.2024.01.006

研究论文

海南尖峰岭热带雨林方枝蒲桃的种群结构特征与动态分布

XIA Lian ,
XU Han ,
LI Yan-peng ,
QIN Wen-hao

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(1. 海南大学热带农林学院，海南海口 570100；2. 中国林业科学研究院热带林业研究所，广东广州 510520)

收稿日期: 2023-12-18

录用日期: 2024-01-15

网络出版日期: 2024-04-03

基金资助

国家自然科学基金委区域创新发展联合基金(U22A20449)

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Characteristics of Population Structure and Growth Status of Syzygium tephrodes in Jianfengling Tropical Rainforest, Hainan, China

夏连，许涵，李艳朋，秦文豪

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(1. College of Tropical Agriculture and Forestry, Hainan University, Haikou 570100, Hainan China; 2. Research Institute of Tropical Forestry, Chinese Academy of Forest, Guangzhou 510520, Guangdong China)

Received date: 2023-12-18

Accepted date: 2024-01-15

Online published: 2024-04-03

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摘要

以海南尖峰岭60 hm²大样地中方枝蒲桃Syzygium tephrodes群落为研究对象，研究其种群结构特点和生长动态变化规律，并探究株间竞争强度及分布格局。结果表明：(1) 方枝蒲桃种群自然更新能力强，幼苗数量丰富，种群死亡率随径级增大波动增加或者波动下降而后在Ⅳ阶段极速递减，波动幅度在第Ⅳ至Ⅴ径级最明显，死亡率在Ⅳ级以后快速下降并趋于平稳。(2) 方枝蒲桃的存活曲线总体表现为Deevey-Ⅲ型，即早期死亡率高，一旦存活至某一年龄，死亡率较低。(3) 时间序列预测结果表明，在经历未来2、4、6龄级后，每个龄级的个体数量均有不同程度增加。综上所述, 方枝蒲桃种群幼龄个体死亡率高，但仍有一定的更新潜力。该研究为方枝蒲桃的园林应用和保护对策制定提供理论支持，建议应进一步加强生境保护，并采取适当的干预措施促进群落内种群稳定发展。

关键词： 方枝蒲桃; 野生观赏植物; 种群动态; 存活曲线; 静态生命表

本文引用格式

XIA Lian , XU Han , LI Yan-peng , QIN Wen-hao . 海南尖峰岭热带雨林方枝蒲桃的种群结构特征与动态分布[J]. 亚热带植物科学, 2024 , 53(1) : 46 -52 . DOI: 10.3969/j.issn.1009-7791.2024.01.006

Abstract

In this study, we took Syzygium tephrodes as the object in a 60 hm² large sample plot in Jianfengling, Hainan, and investigated the structural characteristics and growth dynamics of its population, as well as the intensity of inter-plant competition and its distribution pattern. The results showed that: (1) S. tephrodes populations have strong natural renewal ability, abundant seedlings, and the mortality rate of the populations increased or decreased with the increase of the diameter level and then decreased rapidly at the Ⅳ stage, and the fluctuation amplitude was the most obvious at the Ⅳ–Ⅴ diameter level, and the mortality rate declined rapidly after the Ⅳ level and tended to be stabilized. (2) The survival curves of S. tephrodes were of Deevey-Ⅲ type, the mortality rate was high in the early stage, and low once it reached a certain age. (3) The results of the time series prediction showed that the number of individuals in each age class increased to different degrees after the next 2, 4 and 6 age classes. In conclusion, the mortality rate of young individuals in S. tephrodes population was high, but there was still a certain potential for renewal. This study provided theoretical support for the landscaping application and protection strategy formulation of S. tephrodes. It was recommended to further strengthen habitat protection and take appropriate intervention measures to promote stable population development within the community.

Key words： Syzygium tephrodes; wild ornamental plant; population dynamics; survival curve; static life table

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