中文摘要：

马蹄参（Diplopanax stachyanthus Hand.-Mazz.）隶属于五加科（Araliaceae）马蹄参属（Diplopanax）,是我国Ⅱ级濒危保护植物和活化石植物,主要分布于我国南部湖南、广东、广西、云南、贵州五省温暖潮湿的中山山地。马蹄参常生于山地常绿阔叶林或常绿、针阔混交林中,成树构成乔木上层常见成分。其分布区的生态环境特征主要有：较高海拔、温暖潮湿、热量充足。马蹄参生长缓慢,一般30a生才开花结实。野外调查发现该植物濒危的主要原因有种子产量低、种子萌发率低、幼苗成活率低、种群缺乏竞争力和人为干扰等。针对马蹄参的濒危现状和原因,建议实施就地保护为主、迁地保护为辅的保护策略,最大限度地保存遗传基因。

英文摘要：

Diplopanax stachyanthus, which belongs to the genus Diplopanax within the family Araliaceae, is a living fossil plant and listed among the Grade II State-Protected Endangered Plants. It is distributed mainly in warm and moist mountains in Hunan, Guangdong, Guangxi, Yunnan and Guizhou provinces. D.stachyanthus often grows in the evergreen broad-leaved forest or the evergreen-boreal forest. The adult D.stachyanthus constitutes the main component of the tree layer. Its distribution areas are characterized by relatively higher altitudes, warm and moist climate, and sufficient heat energy. D.stachyanthus grows slowly and blooms and produces seed after 30a growth. Our field surveys attributed its endangered status to a variety of factors, including low seed yield and germination rate, low survival rate of seedlings, low competitiveness of populations, and human disturbance. To preserve this endangered plant, we suggest the emphasis of any conservation effort should be placed upon in situ conservation, with ex situ measures as a supplementary choice, so as to preserve a maximum of its genetic diversity.