【作者】 高贤明； 陈灵芝； 黄建辉； 万师强； 王巍；

【Author】 Gao Xianming,Chen Lingzhi,Huang Jianhui,Wan Shiqiang,Wang Wei (Institute of Botany,Chinese Academy of Sciences,Beijing 100093)

【机构】 中国科学院植物研究所；

【摘要】 研究了太白山弃耕地处于各演替阶段的植物群落的组成和结构,分析了演替系列的群落生活型谱,结果证明,在次生裸地的演替过程中,群落组成成分在生活型谱上显示了明显的变化趋势:随着演替的进展,群落由一年生生活型植物(T)占优势迅速地过渡到以地面芽植物生活型(H)和高位芽植物生活型植物(Ph)占优势。在整个演替过程中,一年生植物,无论是物种数还是个体数,在群落中所占的比重均呈倒"J"型下降,而高位芽植物则呈"S"型上升。更多还原

【Abstract】 The component species and structures of the successional stages of plant communities which occur on the abandoned cropland in Taibaishan,the peak of Qinling Mountains,were studied. Based on an analysis of the life-form spectra of the communities at different successional stages,it was found that during the course of the succession occurring on the secondary bare area,the life- form spectra of the component species of the communities at different successional stages showed an apparent trend of changes:As the succession progress,the component species of the communities at the successional stages,which were dominated by the annual herb species(therophytes) at the first stage,was rapidly replaced and dominated by the phanerophy tes.There are mainly six stages of the successional series:annual herbosa,perennial herbosa,scrub,Populus-Betula mixed forest,Quercus aliena var.acuteserrata-Acer spp.mixed forest and Q.aliena var.acuteserrata forest.更多还原