谢孔平,谷海燕,李策宏,杨楠
XIE Kongping,GU Haiyan,LI Cehong,YANG Nan

• 1:四川省自然资源科学研究院
• 2:野生植物四川省科技资源共享服务平台

摘要(Abstract)：

峨眉槽舌兰是我国特有物种,也是极小种群野生植物。为掌握其资源现状，探明其及附生宿主在群落中的地位，连续5年在峨眉山及邻近地区开展野外考察，并于2021年采用典型样方法对其附生群落进行调查。结果表明：（1）野生种群仅有一个分布区，种群数量不足300株，自然结实率极低，幼苗比例低。（2）附生于该分布区11个分布点8个树种15棵宿主上，附生点常在10 m以上。楠木是其主要宿主，峨眉槽舌兰对其具附生偏好性。（3）所附生群落分布有维管束植物140种，仅峨眉槽舌兰一种兰科植物。宿主楠木是乔木层优势种；峨眉槽舌兰在该群落草本层中占据重要生态位。该群落为热带分布性质，属的分析表明该群落具向暖温带过渡的趋势。建议加强野生种群就地保护工作，建立近地保护种群实施保育研究。
Holcoglossum omeiense Z.H.Tsi ex X.H.Jin is an endemic species of China, and it is also endangered wild plants with extremely small population. In order to understand the current status of H. omeiense?s germplasm resources and find out the position of its epiphytic host in the community, field investigation was carried out in Mount Emei and its adjacent areas for five consecutive years, and finally the epiphytic community was investigated by typical sample method in 2021. The results showed that:(1) There was only one distribution area of wild H. omeiense population and the population number was less than 300. The natural fruiting rate was extremely low, and the proportion of seedlings was low.(2) H. omeiense was epiphytic on 15 hosts of 8 tree species in 11 distribution points in this distribution area,and the epiphytic point was often higher than 10 meters. Phoebe zhennan was the main host, and H. omeiense had an epiphytic preference for it.(3) There were 140 species of vascular plants in the epiphytic community and H. omeiense was the only orchid. P. zhennan, the main host, was the dominant species in the arbor layer with the highest importance value. H. omeiense was the dominant species in the herb layer of the community. The community was tropical in distribution, and the analysis of genera showed that the community had a tendency of transition to warm temperate zone. It is suggested that the wild population of H. omeiense should be protected in situ, and the conservation research should be carried out as soon as possible. the wild population of H. omeiense should be protected in situ, and the conservation research should be carried out as soon as possible. the wild population of H. omeiense should be protected in situ, and the conservation research should be carried out as soon as possible.

关键词(KeyWords)： 峨眉槽舌兰;极小种群;资源现状;附生指数;群落
Holcoglossum omeiense;Extremely small populations;Resource status;Epiphytic index;Community

Abstract:

Keywords:

基金项目(Foundation): 四川省公益性科研院所基本科研业务费专项资金（2020JDKY0024）;; 峨眉山生物多样性四川省野外科学观察研究站（2022）

作者(Author): 谢孔平,谷海燕,李策宏,杨楠
XIE Kongping,GU Haiyan,LI Cehong,YANG Nan

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