高原鼠兔干扰对高寒草甸植物群落多样性和稳定性的影响

doi:10.11686/cyxb2018298

摘要/Abstract

摘要： 物种多样性和功能冗余是评价植物群落稳定性的重要内容。采用野外调查方法研究了高原鼠兔干扰对高寒草甸植物群落物种多样性、功能多样性、功能冗余和植物群落稳定性的影响。结果表明:高原鼠兔干扰增加了物种丰富度指数、功能多样性和功能冗余,降低了物种多样性指数、均匀度指数和植物群落稳定性。随高原鼠兔干扰强度增加,植物群落多样性指数、丰富度指数、功能冗余和植物群落稳定性呈先增大后减小的变化趋势,说明高原鼠兔干扰对植物群落物种多样性和稳定性的影响不仅要考虑干扰与否,而且要考虑干扰强度。

关键词: 高原鼠兔, 高山嵩草草甸, 物种多样性, 群落稳定性, 相关性

Abstract: Plant community diversity and functional redundancy are useful vegetation characteristics to consider when evaluating the community stability. A field survey was carried out to determine the disturbance effects of plateau pika on plant community diversity, functional diversity, functional redundancy and community stability of an alpine meadow. It was found that plateau pika disturbance increased plant species richness, functional diversity and functional redundancy, and decreased the plant diversity index, evenness index and community stability. In disturbed areas, plant species diversity, plant species richness, functional redundancy and community stability initially increased and then later decreased with increasing the plateau pika disturbance intensity. These results suggest that research into the effect of plateau pika disturbance on the plant community diversity and stability should consider not only the disturbance, but also the intensity of the disturbance.

Key words: plateau pika, Kobresia pygmaea meadow, species diversity, community stability, correlation

徐海鹏, 于成, 舒朝成, 金少红, 庞晓攀, 郭正刚. 高原鼠兔干扰对高寒草甸植物群落多样性和稳定性的影响[J]. 草业学报, 2019, 28(5): 90-99.

XU Hai-peng, YU Cheng, SHU Chao-cheng, JIN Shao-hong, PANG Xiao-pan, GUO Zheng-gang. The effect of plateau pika disturbance on plant community diversity and stability in an alpine meadow[J]. Acta Prataculturae Sinica, 2019, 28(5): 90-99.

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