鄂尔多斯高原弃耕农田植物群落演替过程中物种多样性的变化  

Changes of species diversity in plant community succession of abandoned cropland in Ordos Plateau

作　　者：张瑞红 蔡文涛[1] 来利明[1] 周继华[1] 王永吉 姜联合[1] 郑元润[1] ZHANG Ruihong;CAI Wentao;LAI Liming;ZHOU Jihua;WANG Yongji;JIANG Lianhe;ZHENG Yuanrun(Key Laboratory of Plant Resources,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China;College of Life Sciences,Shanxi Normal University,Linfen 041004,China)

机构地区：[1]中国科学院植物研究所北方资源植物重点实验室,北京100093 [2]山西师范大学生命科学学院,临汾041004

出　　处：《干旱区资源与环境》2018年第10期178-183,共6页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金项目(41330749);国家自然科学基金青年基金项目(41401105)资助

摘　　要：通过对鄂尔多斯高原弃耕农田植物群落演替过程中物种多样性变化规律的研究,得到以下结果:(1)随弃耕年限增加,最终软梁和硬梁弃耕农田的优势植物分别为羊草和本氏针茅。(2)软梁弃耕农田α多样性指数随弃耕年限的增加呈先增加后减少的趋势,β多样性指数变化较大。硬梁弃耕农田物种α多样性指数随弃耕年限增加呈下降趋势,Srensen指数呈先下降后升高的趋势,Cody指数呈先升高后下降的趋势。鄂尔多斯高原弃耕农田植物群落演替过程中植物群落最终向地带性植被演替,符合弃耕农田植物群落演替的一般规律。Biodiversity changes in plant community succession of abandoned cropland in Ordos Plateau were analyzed in this study. The result showed that：（ 1） With increasing abandoned years,finally,the dominant species were Leymus chinensis and Stipa bungeana in soft highland and hard highland,respectively.（ 2） With increasing of abandoned years,α diversity indexes firstly increased,then decreased in abandoned cropland in soft highland,and the change of β diversity index was large. In hard highland,with increasing abandoned years,α diversity index generally showed a downward trend,Srensen index decreased firstly then increased,Cody index increased firstly and then decreased. Community succession of abandoned cropland in Ordos plateau approached to zonal vegetation finally,this succession accorded with general rule of abandoned cropland succession.

关 键 词：草地生态学 弃耕农田演替 群落调查 物种多样性 鄂尔多斯高原 群落动态 

分 类 号：Q948.15[生物学—植物学]