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中国特有植物银杉的濒危原因及保护对策
引用本文:谢宗强,陈伟烈.中国特有植物银杉的濒危原因及保护对策[J].植物生态学报,1999,0(1):1-7.
作者姓名:谢宗强  陈伟烈
作者单位:中国科学院植物研究所
摘    要:历史时期气候变迁导致的银杉分布区大幅度缩小和种群数量剧烈下降,是造成银杉(Cathayaargyrophyla)遗传多样性低和生殖障碍大的可能原因。而低水平的遗传多样性和严重的生殖障碍反过来又抑制了种群的壮大,形成恶性循环。这就使得即使是强度不大的人为破坏和砍伐,对种群的生存也构成威胁。为了有效地保护该物种,应该重视银杉天然群落周围的生境的保护,并对群落内的落叶树种进行适当的疏伐;同时,加强人工繁殖力度,进行迁地保护。

关 键 词:银杉  濒危原因  保护对策  气候变迁

THE ENDANGERING CAUSES AND PRESERVING STRATEGIES FOR CATHAYA ARGYROPHYLLA, A PLANT ENDEMIC TO CHINA
Xie Zongqiang and Chen Weilie.THE ENDANGERING CAUSES AND PRESERVING STRATEGIES FOR CATHAYA ARGYROPHYLLA, A PLANT ENDEMIC TO CHINA[J].Acta Phytoecologica Sinica,1999,0(1):1-7.
Authors:Xie Zongqiang and Chen Weilie
Abstract:The strong climatic changes in history resulted in a great decline of the population and a massive shrinkage of the distribution range for Cathaya argyrophylla in large scale.These might lead to a low genetic biodiversity and a great reproductive barrier limiting the development of the population, and finally formed a vicious circle making C.argyrophylla endangered.Therefore,the decrease of the population might occur and the species could be endangered even if the deforest and other human activities were not very strong.To effectively preserve the plant,it should be done to conserve the whole environment of C.argyrophylla ,to thin broad leaved trees,and meanwhile to plant in exsitu .
Keywords:Cathaya  argyrophylla    Endangering reasons  Preserving strategies  Climatic changes  
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