2024年7月15日 星期一
红豆杉迁地保护中天然种群的形成
Establishment of a natural population during the ex situ conservation of Taxus chinensis
1999年 第8卷 第1期 页码[38-41]    下载全文[0.5MB]  
摘要

50 年代自庐山植物园引种栽培于南京中山植物园的 11 株红豆杉Taxus chinensis ( Pilger) Rehd.〕幼苗组成的栽培种群, 40 多年的迁地保护过程中, 生长发育正常, 且在邻近的自然生境中繁衍出一个含有 461 株幼苗及小树的天然红豆杉种群, 树高 10 345 cm, 树龄 1 15 , 主要散生于海拔 35 60 m 的山坡麻栎群落及山溪边的枫杨群落中栽培种群中雌树 5 , 雄树 6 , 培红豆杉在 30 年左右开花结实该天然种群的形成过程是:红豆杉成熟种子被鸟类取食, 其肉质假种皮被消化后, 在鸟类的栖息范围内随着鸟粪被随机散布, 经过生境选择适应, 于适宜的生境条件下萌发生长成幼苗及小树此外, 讨论了天然红豆杉种群的形成和发展, 对于植物迁地保护研究与实践的重要意义
 

Abstract

Eleven seedling trees of Tax us chinensis ( Pilger) Rehd .including 5 females and 6
males, introduced from Lushan Botanical Garden and cultivated as a g roup in Nanjing
Botanical Garden in 1950s, has g rowed and w ell developed
.Furthermore, it has
brought about a natural population of
Tax us chinensis by 1997, w hich consists of 461
individuals 10
345 cm tall and aged 1 15 years .This natural population mainly
scatters in community of
Quercus acutissima Carr. on mountain slope or in com munity
of
Pterocarya stenoptera C.DC .beside mountain stream at 35 60 m altitude .The
cultivated
Taxus chinensis began to bring forth seeds at about 30-years-old .The process
of establishing the natural population is elucidated as follow s
:ripen seeds w ere ingested
by some kinds of birds, then through birds
faeces containing the seeds w ith their fleshy
arils digested, they w ere dispersed in a random w ay within the boundary of areas w here
birds lived o r perched
.After w ithstanding adaptive selections of their habitats, parts of
the dispersed seeds could germinate to give seedlings
.In addition, some considerations
on the research and practice of plant
ex situ conservation are given .
 

关键词红豆杉; 天然种群; 形成; 迁地保护
Key wordsTaxus chinensis ( Pilger) Rehd .; natural population; establishment; exsitu conservation
作者李新华,贺善安,盛 宁
所在单位江 苏 省中国科学院植物研究所, 江苏省植物迁地保护重点实验室, 南京 21001
点击量1312
下载次数909