【作者】 叶其刚； 陈树森； 王诗云；

【Author】 Ye Qigang Chen Shusen Wang Shiyun (Wuhan Institute of Botany, The Chinese Acaderny of Sciences Wuhan 430074 )

【机构】 中国科学院武汉植物研究所；

【摘要】 在湖北省九宫山自然保护区,选择与三峡库区稀有濒危植物群落生境相似的样地,对样地中原植被的处理主要采用逐步疏伐式的方法,建成了一个约3000m2的三峡库区稀有濒危植物异地保护群落。群落中有三峡库区稀有濒危植物24种,以金钱槭(Dipteronia sinensis)、珙桐(Davidia involucrata)、银鹊树(Tapiscia sinensis)和水青树(Tetracentron sinensis)为优势种,在相同条件下,其定植成活率分别为92.1%、53.3%、100%和73.3%。在自然保护区中不宜采用一次性开大林窗组建异地保护群落的方法。本文最后探讨了在自然保护区中组建稀有濒危植物异地保护群落应注意的若干问题,如外来种的引入、后管理等,并认为在自然保护区中,一旦建成一个稳定的异地保护群落,则对稀有濒危植物保护的有效性比在植物园迁地状态下的保护要好,而且从长远的观点来看,花费要少。更多还原

【Abstract】 A community which area was about 3000m2 for ex situ conservation of the rare and endangered plants in the Three Gorge Reservoir Area was constructed in Jiugongshan Nature Reserve, Hubei. 24 species of the rare and endangered plants were planted in the community. The dominant species of the community were Dipteronia sinensis Davidia involucrata, Tapiscia sinensis and Tetracentron sinensis, and their survival rates were 92. 1%, 53.3%, 100% and 73.3%, respectively. The results of theoretical analysis and experiments were shown: The method of constructing community for ex situ conservation of the rare and endangered plants should take the successive-regeneration-cutting system and cutting a big layer gap to construct the community was not suitable. In the end, some problems of constructing community for ex situ conservation of the rare and endangered plants in the nature reserve were discussed, such as introduction of exotic plants and aftercare of the community etc. Once a stable community for ex situ conservation was constructed in the Nature Reserve, the rare and endangered plants will be more effectively conserved and the cost of conservation is less in the Nature Reserve than in a botanical garden from a long term’s view.更多还原