长山群岛藓类植物多样性研究

Study on the diversity of mosses on Changshan Islands

于2019年10月,对辽宁省大连市长山群岛进行野外实地调查,共采集藓类植物标本259份.对采集到的标本进行鉴定分析,结果表明:长山群岛共有藓类植物96种,14科,38属,藓类植物种类组成分布的科、属比较集中,在科属组成分析中,优势科为丛藓科(Pottiaceae)、灰藓科(Hypnaceae)、曲尾藓科(Dicranaceae)、金发藓科(Polytrichaceae)、葫芦藓科(Funariaceae).土生藓类占总数的81.65%.区系类型以温带成分为主,具有强烈的温带性质.通过与其他地区藓类植物属和种的相似性比较,发现长山群岛藓类植物与其相近的地区植物的相似性更高一些,并且海岛藓类植物之间的相似性比与其他距离较近的陆地环境中的高.

In 2019,a field survey was conducted on the Changshan Islands,in which more than 259 moss specimens were collected.There are totally 96 moss species on Changshan Islands,which belong to 14 families,38 genera,according to specimen identification.The distribution of families and genera composition of mosses are centralized relatively.The analysis on the composition of moss family and genus shows that the dominant families are:Pottiaceae,Hypnaceae,Dicranaceae,Polytrichaceae,and Funariaceae.Soil-born mosses take the main proportion,accounting for 81.65%of the total.The dominated flora element is the temperate one,with a strong temperate nature.Compared with the mosses in other regions,the mosses of the Changshan Islands are more similar to those in its neighboring areas in genera and species.The similarity of mosses from different islands is higher than the same factor of mosses between island and closer terrestrial environment.