海岛矿区岩质边坡植物群落演替中物种多样性的变化-生态学杂志.PDF

生态学杂志ChineseJournal of Ecology摇 2014,33(7):1741-1747 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 海海岛矿区岩质边坡植物群落演替中 物种多样性的变化* ** 李林霞摇 王瑞君摇 辜摇 彬 摇 何玉玲摇 陈冀川 (四川大学生命科学学院,成都610064) 摘摇 要摇 通过植物群落调查,采用Shannon 多样性指数、Simpson 优势度指数、Margalef 丰富 度指数和Pielou 均匀度指数,结合DCA排序和一元线性回归分析,考察了舟山海岛矿区岩 质边坡植物物种构成特征,研究了植物群落演替过程中生物多样性的变化。 结果表明:研 究区可划分为3 个植物群落演替阶段(草本植物群落阶段、灌丛群落阶段和灌乔群落阶 段);演替过程中,物种丰富度指数显著上升,多样性指数和优势度指数逐渐升高;具有矿区 特殊生境适应性的植物配置在边坡植被恢复进程中与自然植被表现出一定的差异,演替过 程依次为迁入物种生长期、迁入物种与人工导入种竞争期、迁入物种与人工导入种稳定共 存期;人工导入群落演替后期的植物种大大加速了群落演替进程;合理的植物配置更能促 进群落向正演替方向发展。 关键词摇 岩质边坡;生态恢复;物种多样性;群落演替;DCA 中图分类号摇 X171.4摇 文献标识码摇 A摇 文章编号摇 1000-4890(2014)7-1741-07 Changes in biodiversity during the succession of plant communities on the rocky slopes of ** mine in islands. LI Lin鄄xia,WANGRui鄄jun,GU Bin ,HE Yu鄄ling,CHENJi鄄chuan (Col鄄 lege of Life Science,Sichuan University,Chengdu610064,China).Chinese Journal of Ecology, 2014,33(7):1741-1747. Abstract:This paper studied the changes in biodiversity during community succession process using variousdiversityindexescombinedwithDCAordinationandmonadiclinearregressionanal鄄 ysis,based ontheinvestigationof plant communitiesontherocky slopesof mineinZhoushanIs鄄 land. Theresultsshowedthatthe successionprocessesweredividedintothree stages,i.e. ,her鄄 baceous stage,shrub stage,and shrub鄄tree stage,respectively. With the development of succes鄄 sion,species richness increased significantly,and the diversity and dominance indicesalsowent up. Meanwhile,the successionprocessof artificial communitieswasdifferentfromthat of natural