黄龙山金钱松种群结构与动态特征  

Population Structure and Dynamics of Pseudolarix amabilis in Huanglong Mountain

作　　者：张琴琴[1] 胡雪平 雷曦 汪洋[1] 刘汉才 Zhang Qinqin;Hu Xueping;Lei Xi;Wang Yang;Liu Hancai(Hubei Ecology Polytechnic College,Wuhan,Hubei 430200,China;Huanglong Forest Farm,Tongcheng,Hubei 437403,China;Forestry Bureau of Jianshi County,Jianshi,Hubei 445300,China)

机构地区：[1]湖北生态工程职业技术学院,湖北武汉430200 [2]通城县黄龙林场,湖北通城437403 [3]建始县林业局,湖北建始445300

出　　处：《广西林业科学》2022年第6期746-751,共6页Guangxi Forestry Science

基　　金：中德财政合作林业重大研究项目(zdczhz2021ky09,zdczhz2019ky01)。

摘　　要：为探究湖北黄龙山金钱松(Pseudolarix amabilis)生存现状和数量动态趋势,为保护金钱松种群提供科学依据,通过编制静态生命表,绘制存活曲线、死亡率和消失率曲线及生存函数曲线分析种群径级数量与动态变化;采用时间序列预测种群未来发展趋势。结果表明,中龄级(第Ⅳ~Ⅵ径级)个体占总株数的82.54%;数量动态变化指数V_(pi)为23.16%,V_(pi)′为2.89%,种群为增长型,但对外界随机干扰非常敏感。存活曲线属于Deevey-Ⅰ型;种群呈全期递减、中期较稳和后期衰退的特征。随径级增加,种群未来整体数量减少,不同径级个体数减少。黄龙山金钱松天然种群幼龄个体缺乏,中龄后期面临的环境筛选和竞争压力增大。为维持种群的更新与发展,需进行人工调控和保护。In order to reveal survival status and population dynamics of Pseudolarix amabilis population in Huanglong Mountain,Hubei province and to provide scientific basis for conservation of P.amabilis,numbers of diameter classes and dynamics of population were analyzed by application of static life table and drawing curves of survival,mortality and disappearance rates,and survival function,and time series was used to predict future development trend of population.Results showed that middle-aged individuals(Ⅳ-Ⅵdiameter class)accounted for 82.54%of total individuals.V_(pi) was 23.16%and V_(pi)′ was 2.89%.Population was growth type but very sensitive to external random disturbances.Survival curve belonged to Deevey-Ⅰtype,and population was decreasing in the whole period,more stable in middle period and declining in late period.As diameter class in⁃creased,overall population size in the future decreased and numbers of individuals at different diameter classes decreased.Young individuals of P.amabilis natural population in Huanglong Mountain was lack,and environ⁃mental screening and competitive pressure increased in late period of middle age.To maintain population regen⁃eration and stability,artificial regulation and conservation were needed.

关 键 词：种群结构 静态生命表 生存分析 动态预测 金钱松 

分 类 号：S718.5[农业科学—林学]