秭归县国家重点保护野生植物红豆 树种群生态特征初步研究

preliminary study on population Ecological characteristics of National key protected wild plant ormosia hosiei in zigui county

摘要:

红豆树是中国特有物种,多混生于阔叶林中,被世界 自 然保护联盟(IUCN)濒危物种红色名录列为近危物种,为 国家"级保护野生植物 。采用样地法对湖北省宜昌市秭归县杨林桥镇杨林桥小学旁红豆树种群年龄结构、空间分布格局 进行了调查 。种群年龄结构、种群特定时间生命表和存活曲线研究结果均表明红豆树种群呈稳定型特征;空间分布指数 法、负 二项参数(k)法检验结果表明红豆树种群分布呈集群分布 。对红豆树野生种群的保护提出了建议。

Abstract:

ormosia hosiei is an endemic species in china, mostly mixed in broad-leaved forest. It is listed as near endan- gered species by the world conservation union (IucN) red list, and is a national grade II protected plant. The age struc- ture and spatial distribution pattern of ormosia hosiei population near yanglinqiao primary school in zigui county of yichang city, Hubei province were investigated by sample plot method. The findings of the population age structure,popu- lation life table for a special time and survival curve all showed that the population of ormosia hosiei was stable type; the results of spatial distribution index method and negative binomial parameter (k) method showed that the distribution of ormosia hosiei population was cluster distribution; some suggestions for the protection of ormosia hosiei were put for- ward.