濒危植物小勾儿茶伴生群落特征研究

从植物生活型、群落垂直结构、物种多样性以及群落稳定性4个方面研究小勾儿茶伴生群落特征，分析小勾儿茶在该生境幸存的原因。生活型谱反映出生境温热高湿且四季分明的亚热带气候特点；小勾儿茶处于群落顶层，能够获得充足的阳光；群落结构稳定、物种丰富。小勾儿茶的数量已极为稀少，应采取调查、保护和扩繁3种主要措施扩大其种群数量，即：(1)加大力度在相似的生境中寻找小勾儿茶；(2)对其生境加大保护力度；(3)开展种子生理方面的研究，探索有效的发芽途径，同时用组培的方法繁殖幼苗。

Studies on Traits of Concomitant Community of Endangered Plant Berchemiella wilsonii

Berchemiella wilsonii is an endangered species listed in China Red Book. In 1907, Wilson, an English botanist, first discovered it in Xingshan, Hubei. Since then it had disappeared from its original habitat for nearly a century. In June of 2001, during a series of plant community ecology investigation at Houhe Reserves, Wufeng, Hubei, we discovered this endangered species accidentally. Since then more and more attentions were paid to B. wilsonii. We discovered the causes of surviving of B. wilsonii in its habitat by studying the life forms of the plants, vertical structure of the community, species diversity and community stabilization. First, there is plenty of sunshine and rainfall, which are suitable for the growth of the plants; life forms suggest the subtropical characters of the climate. In addition, B. wilsonii belongs in the top layer of the community and so it is able to get enough sunshine. The structure of the community is stable and the richness of the species is high. B. wilsonii is rather rare and the methods of investigation, protection and breeding are needed to enlarge its populations, namely it is recommended that (1) more B. wilsonii be searched for in similar habitat; (2) the habitats be well protected; (3) the research of seed physiology be developed to discover the method to raise germination rate and meanwhile seedlings be developed by use of tissue culture.