| 毛乌素沙地南缘生态过渡带植被物种多样性的研究 |
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| 引用本文： | 许冬梅,刘彩凤,谢应忠,王堃.毛乌素沙地南缘生态过渡带植被物种多样性的研究[J].干旱区资源与环境,2010(3). |
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| 作者姓名： | 许冬梅 刘彩凤 谢应忠 王堃 |
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| 作者单位： | 宁夏大学农学院;宁夏盐池县畜牧技术推广服务中心;中国农业大学草地研究所; |
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| 基金项目： | 国家自然科学基金项目(30860200);;教育部春晖计划项目(Z2006-1-75004);;宁夏自然科学基金项目(NZ0837)资助 |
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| 摘 要： | 对毛乌素沙地南缘生态过渡带流动半流动沙丘、固定半固定沙地、盐化丘间低地和缓坡丘陵梁地4种不同生境的植被物种组成及多样性进行研究。结果表明:随着沙化程度的加重,从缓坡丘陵梁地,经盐化丘间低地、固定半固定沙地到流动半流动沙丘,多年生草本植物逐渐减少,一年生草本植物及沙生灌木、半灌木逐渐增加;物种丰富度指数、多样性指数及均匀度指数均下降。
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| 关 键 词： | 毛乌素沙地 生态过渡带 植被组成 物种多样性 |
Studies on species diversity in southern ecotone of Mu Us sandy land |
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| XU Dongmei,LIU Caifeng,XIE Yingzhong,WANG Kun.Studies on species diversity in southern ecotone of Mu Us sandy land[J].Journal of Arid Land Resources and Environment,2010(3). |
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| Authors: | XU Dongmei LIU Caifeng XIE Yingzhong WANG Kun |
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| Institution: | 1.College of Agronomy;Ningxia University;Yinchuan 750021;Ningxia;P.R.China;2.Extension and Service Center of Animal Husbandry Technique in Yanchi County;Yanchi 751500;3.Institute of Grassland Science;China Agricultural University;Beijing 100094;P.R.China |
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| Abstract: | The vegetative composition and species diversity of 4 different habitats in the ecotone in south edge of Mu Us sandyland were determined.The results showed that the perennial species gradually gave place to psammophyte annuals,shrubs and semi-shrubs.The species richness index,diversity index and Pielou index were all decreased from gentle slope hilly ridge,through to saline bottomland,fixed and semi-fixed dune and to shifting and semi-shifting dune. |
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| Keywords: | Mu Us sandy land ecotone vegetative composition species diversity |
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