| 补播禾草对玛曲高寒沙化草地植物多样性和生产力的影响 |
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| 引用本文： | 郑华平,陈子萱,牛俊义,高玉红. 补播禾草对玛曲高寒沙化草地植物多样性和生产力的影响[J]. 草业学报, 2009, 18(3): 28-33. DOI: 10.11686/cyxb20090305 |
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| 作者姓名： | 郑华平 陈子萱 牛俊义 高玉红 |
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| 作者单位： | 1.甘肃农业大学农学院, 甘肃 兰州 730070;2.甘肃省农业科学院生物技术研究所, 甘肃 兰州 730070;3.甘肃省科学技术厅, 甘肃 兰州 730000 |
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| 摘 要： | 为了解补播对高寒沙化草地植物多样性和生产力的影响,于2006和2007年在甘肃玛曲开展了多种牧草的草地补播改良试验。结果表明,补播对物种丰富度影响不明显,但使草群密度明显增大,补播后各处理Pielou均匀度指数、Simpson指数、Shannon-Weiner指数均减小,其中单播中华羊茅、混播中华羊茅和垂穗披碱草多样性指数显著减小。补播后地上生物量比对照显著增加,其中3种禾草混播后地上生物量增加了55.74％。补播使草地的经济价值得以提高,有利于高寒沙化草地的恢复和生态环境的保护。
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| 关 键 词： | 高寒沙化草地 补播 植物多样性 生产力 |
| 收稿时间： | 1900-01-01; |
Effects of interseeding on plant diversity and productivity in Maqu alpine desertified meadow |
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| ZHENG Hua-ping,CHEN Zi-xuan,NIU Jun-yi,GAO Yu-hong. Effects of interseeding on plant diversity and productivity in Maqu alpine desertified meadow[J]. Acta Prataculturae Sinica, 2009, 18(3): 28-33. DOI: 10.11686/cyxb20090305 |
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| Authors: | ZHENG Hua-ping CHEN Zi-xuan NIU Jun-yi GAO Yu-hong |
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| Affiliation: | 1.College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China; 2.Institute of Biotechnology, Gansu Academy of Agricultural Science, Lanzhou 730070, China; 3.Department of Science and Technology of Gansu Province, Lanzhou 730070, China |
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| Abstract: | The effects of interseeding on species richness,species diversity,and productivity in Maqu alpine desertified meadow is discussed.Interseeding markedly increased species richness and groups density.Species density was increased 8.08% by interseeding with Poa pratensis,and by 39.65% with mixed interseeding with Festuca sinensis and Elymus nutans.The Pielou,Simpson,and Shannon-Weiner indexes were all reduced after interseeding,with F.sinensis alone or in a mixture with F.sinensis and E.nutans.Above-ground bio... |
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| Keywords: | alpine desertified meadow interseeding plant diversity productivity |
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