中文摘要：

为了解黑龙江省香鳞毛蕨种群结构,在2011年6月对大兴安岭呼中区、欧浦县、伊春市红星区、五大连池景区二三池、南北泉和牡丹江市宏伟村6个天然种群分布地进行了野外实地调查。结果表明：种群密度最高为4.78株·m-2,最低为1.56株·m-2,不同分布地种群密度均较低;空间分布格局调查表明其均为聚集分布,并且聚集程度很低;种群年龄结构虽有较大差异,但均呈现以2~4龄期为中心的偏正态分布,且1~4龄期数量最大,在5~9龄期数量较少;大于4龄期时数量随年龄的增加而减小;生命表和存活曲线等表明幼龄期存活率低,3~4龄级死亡率高,累计达到80.93%,种群个体最大年龄为9龄左右;种群存活曲线趋势相同且均为Deevey C型。说明,6个天然种群分布地的香鳞毛蕨种群处于稳定状态,种群扩展能力不强,能够进行天然更新。

英文摘要：

In order to know the population structure of Dryopteris fragrans,Huzhong and Oupu area in greater Khingan,Hongxing District in Yichun,ErSanChi and NanBeiQuan in Wudalianchi Scenic Area,Hongwei village in Mudanjian natural distribution areas in Heilongjiang Province were investigated in June,2011.The results showed that the maximum and minimum population density of D.fragrans was 4.78plant·m-2 and 1.56plant·m-2 respectively,indicating that population density of D.fragrans was small.Spatial distribution pattern of D.fragrans were aggregated distribution,and the aggregated degree was low.The age structure showed a partial normal distribution with the center being two to four years.One to four-year-old D.fragrans had relative larger population number,while four to nine-year-old D.fragrans had smaller population number.Population number decreased with the increasing age when D.fragrans was older than four years.The life table showed that D.fragrans had low survival rate in juvenile period,the mortality rate of three to four-year-old individuals reached 80.93%.The maximum age in the population was nine-year-old.The survival curves of the six populations were all Deevey C.In conclusion,D.fragrans was in a stable population,its expansion ability was not strong,and could keep a natural regeneration.