| 施肥对高寒草甸植物群落组分种繁殖分配的影响 |
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| 引用本文： | 牛克昌,赵志刚,罗燕江,杜国祯.施肥对高寒草甸植物群落组分种繁殖分配的影响[J].植物生态学报,2006,30(5):817-826. |
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| 作者姓名： | 牛克昌 赵志刚 罗燕江 杜国祯 |
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| 作者单位： | 兰州大学干旱与草地生态教育部重点实验室, 兰州 730000 |
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| 摘 要： | 该文以青藏高原东部高寒草甸植物群落的24种主要组分种为材料,研究了施肥对多年生草本植物繁殖分配的影响。结果表明:1)对多数群落组分种来说,施肥显著影响生物量和生物量分配;2)随着肥力的增加,大多数物种的植株个体明显增大、繁殖输出减小或不变,进而导致它们的繁殖分配明显减小;3)施肥影响的个体大小和生物量分配变化程度与方向因物种而异,对一些物种的影响不明显,对个别物种的影响方向不同于对多数物种的影响;4)施肥后群落水平的繁殖分配明显减小。
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| 关 键 词： | 施肥 高寒草甸 植物群落 生物量分配 繁殖分配 |
| 收稿时间： | 2005-07-19 |
| 修稿时间： | 2006-03-23 |
FERTILIZATION EFFECTS ON SPECIES REPRODUCTIVE ALLOCATION IN AN ALPINE MEADOW PLANT COMMUNITY |
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| NIU Ke-Chang,ZHAO Zhi-Gang,LUO Yan-Jiang,DU Guo-Zhen.FERTILIZATION EFFECTS ON SPECIES REPRODUCTIVE ALLOCATION IN AN ALPINE MEADOW PLANT COMMUNITY[J].Acta Phytoecologica Sinica,2006,30(5):817-826. |
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| Authors: | NIU Ke-Chang ZHAO Zhi-Gang LUO Yan-Jiang DU Guo-Zhen |
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| Affiliation: | Key Laboratory of Arid and Grassland Ecology of Ministry of education, Lanzhou University, Lanzhou 730000, China |
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| Abstract: | Background and Aims Plant resource allocation strategies are important in determining community structure in variable environments. However, observations of changes in species reproductive allocation under disturbance at the community level are rare. This study addresses the following questions: 1) does fertilization alter patterns of species reproductive allocation in natural plant communities, 2) are there interspecific differences for a fertilization effect, and 3) what is the effect of fertilization on assemblage-level reproductive allocation? |
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| Keywords: | Fertility Alpine meadow Plant communities Biomass allocation Reproductive allocation |
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