| 不同退化程度高寒草甸高山嵩草的构件变化 |
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| 引用本文： | 杨元武,李希来.不同退化程度高寒草甸高山嵩草的构件变化[J].西北植物学报,2011,31(1):167-171. |
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| 作者姓名： | 杨元武 李希来 |
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| 作者单位： | 青海大学,农牧学院,西宁,810016 |
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| 基金项目： | 青海省科技厅国际合作处项目(2009-J-806); 青海大学中青年科研基金(2009-QN-07) |
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| 摘 要： | 对不同退化程度下高山嵩草的构件变化进行了初步研究.结果表明:随着退化程度的加剧,高山嵩草无性系复合主分蘖数、单分蘖数以及构件的叶片数均明显下降,退化程度加剧不利于高山嵩草的营养生长;除极度退化草地外,其余样地各构件的生物量大小依次是:根茎>根>叶>秆,并且随退化程度的加剧,各构件生物量显著下降;重度退化草地中,莎草科植物生殖枝数占植物群落总生殖枝的比例最大,每个有效生殖枝平均产生3.4粒种子.
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| 关 键 词： | 退化程度 高山嵩草 分蘖 生物量 |
Modular Variety of Kobresia pygmaea on Alpine Meadow with Different Degraded Levels |
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| YANG Yuan-wu,LI Xi-lai.Modular Variety of Kobresia pygmaea on Alpine Meadow with Different Degraded Levels[J].Acta Botanica Boreali-Occidentalia Sinica,2011,31(1):167-171. |
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| Authors: | YANG Yuan-wu LI Xi-lai |
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| Institution: | YANG Yuan-wu,LI Xi-lai(Agriculture and Animal Husbandry College,Qinghai University,Xining 810016,China) |
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| Abstract: | Modular varieties of Kobresia pygmaea have been primarily studied on alpine meadow with different degraded levels.The results showed that the number of main tiller,single tiller and leaves of modules of K.pygmaea clone reduced significantly with the increased gradually degradation.The greater degradation was not benefit to vegetative growth of K.pygmaea.Biomass of each modular are in the order of rhizome>root>leaves>spike on each degraded sample except on extremely degraded grassland and reduced with the in... |
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| Keywords: | degraded levels Kobresia pygmaea tiller biomass |
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