大连主城区南部山体植物群落多样性研究  

Study on the diversity of mountain plant community in the southern part of Dalian

作　　者：张恒庆[1] 朱鹏宇 许爽[1] 王海双 刘静怡 ZHANG Hengqing;ZHU Pengyu;XU Shuang;WANG Haishuang;LIU Jingyi(School of Life Science, Liaoning Normal University, Dalian 116081, China)

机构地区：[1]辽宁师范大学生命科学学院,辽宁大连116081

出　　处：《辽宁师范大学学报（自然科学版）》2020年第2期208-214,共7页Journal of Liaoning Normal University:Natural Science Edition

摘　　要：采用样方、样线相结合的方法,对大连市主城区南部山体维管束植物多样性进行了系统的调查,结果显示大连市主城区南部山体区域内常见植物47科102属141种.对植物群落的不同类型、不同层次的丰富度和均匀度以及物种多样性进行分析,并且对各山体不同坡向的植物物种组成进行Jaccard指数计算.结果表明:①群落各层次与多样性指数的关系表现:丰富度指数排序为草本层>灌木层>乔木层;物种多样性指数排序主要表现为草本层>灌木层>乔木层;均匀度指数表现为人工林中乔木层较低,自然群落中乔木层较高,灌木层和草本层的各群落之间则差异不大.②各山体不同坡向的相似性指数存在差异且均<0.5,综合坡度等因素,证明大连主城区南部山体植物的组成与坡向间存在关联性.In this study,the method of combining sample and sample line was used to systematically investigate the diversity of vascular plants in the southern part of Dalian’s main urban area.The survey results show that there are 141 species of 102 genera and 47 families in the southern mountain area of Dalian’s main urban area.In this paper,the Jaccard index is calculated for the different types and levels of plant community richness and evenness and species diversity and for the plant species composition of different slopes.The results show that:①The relationship between the various levels of the community and the diversity index:the richness index is ranked as herb layer>shrub layer>arbor layer;the species diversity index is ranked as herb layer>shrub layer>arbor layer,uniformity index performance in the plantation,the arbor layer is lower,the arbor layer is higher in the natural community,and the difference between the shrub layer and the herb layer is not significant.②The similarity indexes of different slopes of different mountain bodies are different and both are<0.5.The comprehensive slope and other factors prove that there is a correlation between the composition of the mountainous plants in the southern part of Dalian and the aspect of the slope.

关 键 词：大连 城市山体 植物群落 物种多样性 

分 类 号：Q145.2[生物学—生态学]