迁地栽培坡垒的种群结构与幼苗更新研究  

Study on population structure and seedling regeneration of Hopea hainanensis Merr.&Chun under ex situ conservation in Xishuangbanna Tropical Botanical Garden

作　　者：肖云学 殷霖昊 郁文彬 唐建维[4] Xiao Yun-Xue;Yin Lin-Hao;Yu Wen-Bin;Tang Jian-Wei(Horticulture Department of Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,Xishuangbanna,Yunnan 666303,China;School of Coffee for Pu’er University,Pu’er,Yunnan 665000,China;Center for Integrative Conservation,Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,Xishuangbanna,Yunnan 666303,China;CAS Key Laboratory of Tropical Plant Resources and Sustainable Use,Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,Xishuangbanna,Yunnan 666303,China)

机构地区：[1]中国科学院西双版纳热带植物园园林园艺中心,云南西双版纳666303 [2]普洱学院咖啡学院,云南普洱665000 [3]中国科学院西双版纳热带植物园综合保护中心,云南西双版纳666303 [4]中国科学院西双版纳热带植物园,热带植物资源可持续利用重点实验室,云南西双版纳666303

出　　处：《植物科学学报》2023年第5期604-612,共9页Plant Science Journal

基　　金：中国生态环境部:生物多样性调查与评估项目(2019HJ2096001006);中国科学院战略生物资源计划项目(KFJ-BRP-007-005)。

摘　　要：本研究在中国科学院西双版纳植物园设置的500 m^(2)样地中对迁地栽培植物坡垒(Hopea hainanensis Merr.&Chun)种群进行调查,采用径级结构代替龄级结构分析坡垒种群的结构特征,同时编制了静态生命表,分析种群的存活率、死亡率及消失率。结果显示,迁地栽培的坡垒种群更新的苗木尚无大径级的个体;但栽培的坡垒大部分个体能开花结果及自然更新,且幼苗数量较多,幼苗密度为19550株/hm^(2),,占种群个体数的86.00%。静态生命表分析结果表明,坡垒种群Ⅱ龄级的个体死亡率最低,Ⅲ龄级的个体死亡率最高,种群存活曲线趋向于Deevey-Ⅲ型;死亡率和消失率变化趋势一致。研究结果表明,坡垒迁地保护取得了初步成功。此外,迁地栽培中应加强对幼苗、幼树的管理,有助于提高其成活率,更多的进入下一龄级的生长和种群的扩大。An investigation of a Hopea hainanensis population was conducted in a 500 m2 plot in the Xishuangbanna Tropical Botanical Garden(XTBG),Chinese Academy of Sciences.The diameter-level structure was used instead of the age-level structure to analyze the structural characteristics of the population.At the same time,a static life table was compiled to analyze the survival rate,mortality rate,and disappearance rate of the population.Results showed that the ex situ cultivated H.hainanensis population had no individuals with large diameter,although most of adult individuals are capable of blossoming,fruiting,and naturally regen-erating.The seedling density of H.hainanensis was 19550 plants per hm2,accounting for 86.00%of total individuals.Based on the static life table,the lowest mortality rate was observed in age classⅡ,while the highest was observed in age classⅢ.The population survival curve was categorized as the Deevey-Ⅲtype.Changes in mortality and loss rate curves showed the same trend.Results indicated that ex situ conservation of H.hainanensis in XTBG has achieved initial success,as evidenced by its population increase and germination stability.Enhanced management of seedlings and saplings could further improve survival rates and promote seedling to sapling,treelet,and tree progression,thereby expanding its population.

关 键 词：坡垒 迁地栽培 种群结构 幼苗更新 静态生命表 存活曲线 

分 类 号：Q948.1[生物学—植物学]