| 藏北高寒草地植物群落物种多样性沿海拔梯度的分布格局 |
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| 引用本文： | 段敏杰,高清竹,郭亚奇,万运帆,李玉娥,干珠扎布,旦久罗布,韦兰亭,西饶卓玛.藏北高寒草地植物群落物种多样性沿海拔梯度的分布格局[J].草业科学,2011,28(10):1845-1850. |
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| 作者姓名： | 段敏杰 高清竹 郭亚奇 万运帆 李玉娥 干珠扎布 旦久罗布 韦兰亭 西饶卓玛 |
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| 作者单位： | 1. 中国农业科学院农业环境与可持续发展研究所,北京100081／农业部农业环境与气候变化重点实验室,北京100081
2. 西藏自治区那曲地区草原站,西藏那曲,852100 |
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| 基金项目： | 国家自然科学基金项目(30800142、40775062、40971132);西藏那曲地区与中国农业科学院合作项目 |
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| 摘 要： | 以藏北地区那曲县日囤布山的高寒草地为研究对象，采用样方调查法，分析不同海拔高度（4 523~4 673 m）草地植物群落结构及物种多样性的变化格局。结果表明，随着海拔的升高，高寒草地植物群落总盖度与地上生物量均表现出先增加后降低的趋势，即在中等海拔梯度（4 623 m）水平草地植被生长最好；不同海拔梯度间植物物种组成存在很大的差异；植物群落物种丰富度、Shannon Wiener多样性指数和E.Pielou均匀度指数，呈现“单峰”分布格局，中海拔梯度处物种丰富度最高。
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| 关 键 词： | 海拔梯度 物种多样性 物种丰富度 生物量 高寒草地 |
Species diversity distribution pattern of alpine grassland communities along an altitudinal gradient in the Northern Tibet |
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| DUAN Min jie,GAO Qing zhu,GUO Ya qi,WAN Yun fan,LI Yu e,Ganzhuzhabu,Danjiu.Species diversity distribution pattern of alpine grassland communities along an altitudinal gradient in the Northern Tibet[J].Pratacultural Science,2011,28(10):1845-1850. |
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| Authors: | DUAN Min jie GAO Qing zhu GUO Ya qi WAN Yun fan LI Yu e Ganzhuzhabu Danjiu |
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| Institution: | DUAN Min-jie1,2,GAO Qing-zhu1,2,GUO Ya-qi1,2,WAN Yun-fan1,2,LI Yu-e1,2, Ganzhuzhabu1,2,Danjiuluobu1,2,WEI Lan-ting3,Xiraozhuoma3(1.Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agriculture Sciences,Beijing 100081,China; 2.Key Laboratory for Agro-Environment and Climate Change, Ministry of Agriculture,Beijing 100081,China; 3.Grassland Station of Naqu Prefecture in Tibet,Tibet Naqu 852100,China) |
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| Abstract: | A field survey was carried out to describe the species diversity distribution pattern of alpine grassland communities along an altitudinal gradient at the Ritunbu Mountain of Nyainqentanglha Range,Naqu regions in the Northern Tibet.The results of this study showed that aboveground biomass and total coverage of plant communities increased firstly and then decreased as the altitude gradient increased,and peaked at 4 623 m.The species richness index,Shannon-Wiener index and Pielou evenness index showed a unimodal pattern,and peaking at intermediate levels of altitude. |
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| Keywords: | altitude gradients species diversity species richness biomass alpine grassland |
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