安太堡矿区复垦地不同植被下苔藓植物区系特征  

Floristic Characteristics of Bryophytes Under Different Revegetation Patterns in Reclaimed Dumps of Antaibao Mining Area

作　　者：陈慧芳 郭英英 李素清[1] CHEN Huifang;GUO Yingying;LI Suqing(Institute of Loess Plateau,Shanxi University,Taiyuan 030006)

机构地区：[1]山西大学黄土高原研究所,太原030006

出　　处：《中国农学通报》2023年第13期70-78,共9页Chinese Agricultural Science Bulletin

基　　金：国家自然科学基金“黄土高原矿区退化生境土壤-植被协同恢复模式及生态效应研究”(41271531);山西省第七批百人计划项目(207521013);太原市市容环境卫生科学研究所研发项目“植物对道路融雪剂胁迫的耐性机制”(02050120120130)。

摘　　要：在苔藓植物样方调查、标本采集和种类鉴定基础上,采用物种丰富度指数、相似性系数、植物区系谱比率、主成分分析(PCA)与系统聚类分析的方法,对安太堡矿区复垦地不同植被下苔藓植物区系成分与特征进行研究。结果显示:(1)该矿区复垦地不同植被下苔藓植物共鉴定出7科17属41种,优势科为丛藓科与真藓科,优势属为对齿藓属与真藓属。不同植被下苔藓植物物种组成、区系特征与所在植被类型的关系密切。(2)安太堡矿区复垦地不同植被下苔藓植物区系成分以北温带分布类型为主(占比46.34%),东亚分布类型次之,其区系具有明显的北温带性质兼有东亚色彩。(3)安太堡矿区复垦地与国内其他11个地区苔藓植物区系谱的PCA分析与系统聚类分析表明,安太堡矿区复垦地不同植被下苔藓植物区系成分与白云鄂博稀土矿区的相似度最高,与东灵山的相似度最低。研究表明,随着恢复年限的增长,安太堡矿区复垦地不同植被下苔藓植物所处生境已明显改善,但整体生境仍较干旱,未来应加强安太堡矿区复垦地苔藓植物多样性保护。On the basis of plot sampling of bryophytes,specimen collection and species identification,methods of species abundance index,similarity coefficient,floristic element ratio,principal component analysis(PCA)and systematic cluster analysis were used to analyze the floristic composition and characteristics of bryophytes under different revegetation patterns in the reclaimed dumps of Antaibao mining area.The results are as followings.(1)A total of 41 bryophyte species belonged to 17 genera and 7 families under different revegetation patterns were identified in the reclaimed dumps of Antaibao mining area,of which the dominant families were Pottiaceae and Bryaceae,and the dominant genera were Didymodon and Bryum,respectively.The composition and floristic characteristics of bryophyte species under different revegetation patterns were closely related to its revegetation patterns.(2)The bryophyte flora under different revegetation patterns in the reclaimed dumps of Antaibao mining area were dominated by the distribution type of north temperate zone(accounting for 46.34%),followed by the east Asian distribution type,which had obvious northern temperate properties and east Asian component colors.(3)The PCA analysis and systematic cluster analysis of the bryophyte flora under different revegetation patterns in the reclaimed dumps of Antaibao mining area and 11 other regions in China showed that the similarity of bryophyte flora under different revegetation patterns in the reclaimed dumps of Antaibao mining area was the highest with that in the Bayan Obo rare earth mining area,while was the lowest with that in the Dongling Mountain.The results indicated that the habitat of bryophytes under different revegetation patterns in the reclaimed dumps of Antaibao mining area had been improved significantly with the increase of the revegetation years,but it was still relatively dry on the whole.In the future,the biodiversity protection of bryophytes should be strengthened in the reclaimed dumps of Antaibao mining area.

关 键 词：苔藓植物 区系 安太堡矿区 复垦地 主成分分析 系统聚类分析 

分 类 号：Q948.15[生物学—植物学]