麻城枳椇种群结构及动态分析  

Structural and Dynamic Analysis of Hovenia acerba Population in Macheng

作　　者：刘力萍 毕全勇 石林曌 汪洋[3] 滕家喜[4] Liu Liping;Bi Quanyong;Shi Linzhao;Wang Yang;Teng Jiaxi(Macheng Forestry Bureau,Huanggang 438300,China;Dakou Forest Farm of Zhongxiang City,Zhongxiang 431900,China;School of Gardening and Architecture Engineering,Hubei Ecology Polytechnic College,Wuhan 430200,China;College of Horticulture&Forestry Sciences of Huazhong Agricultural University,Wuhan 430070,China)

机构地区：[1]麻城市林业局,湖北黄冈438300 [2]钟祥市大口林场,湖北钟祥431900 [3]湖北生态工程职业技术学院园林建工学院,湖北武汉430200 [4]华中农业大学园艺林学学院,湖北武汉430070

出　　处：《湖南生态科学学报》2019年第3期9-14,共6页Journal of Hunan Ecological Science

基　　金：湖北省自然科学基金项目(40 2012DBA40001);湖北省教育厅科学研究项目(B2018481;B2018482)

摘　　要：为了阐明枳椇天然种群的年龄结构和发展趋势,保护现有资源,对麻城五脑山枳椇天然种群进行样地调查,分析了种群龄级动态,编制了种群静态生命表,进行了时间序列预测.结果表明:枳椇种群龄级结构动态指数V pi=51.58%>0,呈增长型;环境筛的抑制出现在第Ⅳ龄级,其后种群动态趋向稳定;存活曲线介于Deevey-Ⅱ型和Deevey-Ⅲ型之间,更接近Deevey-Ⅱ型;时间序列分析表明,由于林下更新层幼苗数量较大,种群具有较强增长和恢复能力.研究表明,枳椇种群的生长发育符合其自身生物学特性,种子库充足,种群处于稳定增长型.种群保护应避免景区建设对种群更新造成干扰.In order to clarify the age structure and development trend of natural Hovenia acerba population,and protect the existing resources,a field investigation was conducted on the population of Hovenia acerba of Wunaoshan Mountains of Macheng City,which analyzed the dynamics of age-class of Hovenia acerba population,and compiled its static life tables,and predicted the time series.The results revealed that the age structure dynamics index of Hov enia acerba population is V pi=51.58%>0,indicating the population in growth;the inhibition of environmental screen appeared atⅣage-class,and the population dynamics,afterwards,tended to be stable;the survival curve of the population was between Deevey-Ⅱtype and Deevey-Ⅲtype,but even closer to Deevey-Ⅱtype;the population of Hovenia acerba had a strong growth and recovery capacity,due to the large number of seedlings.The research concluded that the growth and development of Hovenia acerba population of Macheng accorded with its own biological characteristics.With abundant seed bank,the population was in a stable growth pattern.Disturbance to the population recovery should be avoided in the consequent construction of scenic spot to protect the population.

关 键 词：麻城 枳椇 种群结构 动态分析 

分 类 号：Q145[生物学—生态学]