狭叶坡垒种群结构特征及动态研究  

Study on Population Structure Characteristics and Dynamics of Hopea chinensis

作　　者：何巧萍 罗应华[1,2,3] 姜冬冬 零雅茗 He Qiaoping;Luo Yinghua;Jiang Dongdong;Ling Yaming(College of Forestry,Guangxi University,Nanning,Guangxi 530004,China;College of Forestry,Guangxi Key Laboratory of Forest Ecology and Conservation,Guangxi University,Nanning,Guangxi 530004,China;Laibin Jinxiu Dayaoshan Forest Ecosystems Observation and Research Station of Guangxi,Laibin,Guangxi 546100,China;Administration of Shiwandashan National Nature Reserve of Fangchenggang city,Fangchenggang,Guangxi 538000,China)

机构地区：[1]广西大学林学院,广西南宁530004 [2]广西大学林学院广西森林生态与保育重点实验室,广西南宁530004 [3]来宾金秀大瑶山森林生态系统广西野外科学观测研究站,广西来宾546100 [4]防城港市十万大山国家级自然保护区管理局,广西防城港538000

出　　处：《广西林业科学》2023年第4期461-467,共7页Guangxi Forestry Science

基　　金：国家自然科学基金项目(31200330);广西林草种质资源普查与收集(桂林科字[2021]第34号);广西科技厅重大专项(桂科AB16380254)。

摘　　要：为了解狭叶坡垒(Hopea chinensis)种群生存现状及动态特征,基于十万大山国家级自然保护区狭叶坡垒固定动态监测样地,编制种群静态生命表、绘制生存函数和存活曲线,分析2015年和2021年种群结构特征及动态变化,通过Ripley’s L函数分析种群空间分布特征。结果表明,狭叶坡垒种群结构总体呈倒“J”型,个体数随龄级增大而减小。2015年,生命期望值在第Ⅴ龄级前随龄级增加而增加,在第Ⅵ龄级减小,第Ⅶ龄级增加,之后随龄级增加而减小;2021年,生命期望值在第Ⅴ龄级前随龄级增加呈先减后增的趋势,第Ⅴ龄级后随龄级增加而减小。存活曲线均趋近于Deevey-Ⅲ型。生存分析表明,2021年种群的生存率相较于2015年稍有提高。狭叶坡垒空间分布格局呈聚集分布。综上所述,群落中的狭叶坡垒种群为增长型种群,处于一个动态平衡的发展状态,具有较高的增长潜力。In order to understand survival status and dynamic characteristics of Hopea chinensis population,based on fixed dynamic monitoring sample plots of H.chinensis in Shiwandashan National Nature Reserve,population structure characteristics and dynamic changes in 2015 and 2021 were analyzed by compiling static life table of population and drawing survival function curves and survival curves.Ripley's L function was used to analyze spatial distribution characteristics of population.Results showed that population structure of H.chinensis showed an inverted"J"type,and number of individuals decreased with increase of age class.In 2015,life expectancy increased with increase of age class before age class Ⅴ,decreased at age class Ⅵ,increased at age class Ⅶ,and then decreased with increase of age class.In 2021,life expectancy showed trend of decreased firstly and then increased with increase of age class before age class Ⅴ,and decreased with increase of age class after age class Ⅴ.Survival curves were similar to Deevey-Ⅲ.Survival analysis showed that survival rate of population in 2021 slightly increased compared with 2015.Spatial distribution pattern of H.chinensis was clustered.In conclusion,H.chinensis population in community was a growth population,which was in a state of dynamic equilibrium and had high growth potential.

关 键 词：生命表 存活曲线 种群结构 空间分布格局 狭叶坡垒 

分 类 号：Q948[生物学—植物学]