| Effects of plateau pika on the relationship between plant species diversity and functional diversity in alpine meadow北大核心CSCD |
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| 引用本文： | 段媛媛,张静,王玲玲,刘彩凤,王乙茉,周俗,郭正刚.Effects of plateau pika on the relationship between plant species diversity and functional diversity in alpine meadow北大核心CSCD[J].草业学报,2022,31(11):25-35. |
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| 作者姓名： | 段媛媛 张静 王玲玲 刘彩凤 王乙茉 周俗 郭正刚 |
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| 作者单位： | 1.兰州大学草地农业生态系统国家重点实验室，兰州大学农业农村部草牧业创新重点实验室，兰州大学草地农业教育部工程研究中心，兰州大学草地农业科技学院，甘肃 兰州 730020;2.四川省草原科学研究院，四川 成都 611731 |
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| 基金项目： | 国家自然科学基金(32171675);西藏草业时空拓展技术模式创新与示范(XZ202101ZD003N);中央高校基本科研业务费专项资金(lzujbky-2020-it12) |
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| 摘 要： | The relationship between plant species diversity and functional diversity in grassland will change with environmental changes. The plateau pika （Ochotona curzoniae） has an effect on the hydrothermal process of alpine meadow in its nesting area. However，it is not clear whether the disturbance of plateau pika effects the relationship between plant species diversity and functional diversity in alpine meadow. A random stratified and paired design was used to select plots in Luqu county in Gansu Province，and Qilian and Gonghe Counties in Qinghai Province and a field survey was conducted to investigate the effects of plateau pika disturbance on the relationship between plant species diversity and functional diversity of the alpine meadow. It was found that plateau pika disturbance significantly increased the plant species richness index and the species diversity index but did not significantly affect the species evenness index. Plateau pika disturbance significantly increased plant functional richness index （P< 0.05） but had no significant effect on the plant functional evenness index or the functional divergence index. With plateau pika disturbance effects，the relationship between plant functional richness index and species richness index changed from a logarithmic function to a quadratic function，and the relationship between plant functional evenness index and species evenness index changed from non-significant to significantly positive. In addition， positive correlations between functional richness index and species richness index，and functional richness index and species diversity index were significantly decreased，as were negative correlations between functional divergence index and species richness index，and functional divergence index and species diversity index were significantly decreased. The findings of this study provide basic information for understanding the mechanism of species coexistence of plant communities under plateau pika disturbance and help understanding of how plant diversity effects in an alpine meadow ecosystem function under plateau pika disturbance. © 2022 Editorial Office of Acta Prataculturae Sinica. All rights reserved.
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| 关 键 词： | 高原鼠兔干扰 高寒草甸 植物物种多样性 植物功能多样性 |
| 收稿时间： | 2021-11-30 |
| 修稿时间： | 2022-02-28 |
Effects of plateau pika on the relationship between plant species diversity and functional diversity in alpine meadow |
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| Yuan-yuan DUAN,Jing ZHANG,Ling-ling WANG,Cai-feng LIU,Yi-mo WANG,Su ZHOU,Zheng-gang GUO.Effects of plateau pika on the relationship between plant species diversity and functional diversity in alpine meadow[J].Acta Prataculturae Sinica,2022,31(11):25-35. |
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| Authors: | Yuan-yuan DUAN Jing ZHANG Ling-ling WANG Cai-feng LIU Yi-mo WANG Su ZHOU Zheng-gang GUO |
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| Institution: | 1.State Key Laboratory of Grassland Agro-ecosystems，Key Laboratory of Grassland Livestock Industry Innovation，Ministry of Agriculture and Rural Affairs，Engineering Research Center of Grassland Industry，Ministry of Education，College of Pastoral Agriculture Science and Technology，Lanzhou University，Lanzhou 730020，China;2.Sichuan Academy of Grassland Sciences，Chengdu 611731，China |
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| Abstract: | The relationship between plant species diversity and functional diversity in grassland will change with environmental changes. The plateau pika （Ochotona curzoniae） has an effect on the hydrothermal process of alpine meadow in its nesting area. However， it is not clear whether the disturbance of plateau pika effects the relationship between plant species diversity and functional diversity in alpine meadow. A random stratified and paired design was used to select plots in Luqu county in Gansu Province， and Qilian and Gonghe Counties in Qinghai Province and a field survey was conducted to investigate the effects of plateau pika disturbance on the relationship between plant species diversity and functional diversity of the alpine meadow. It was found that plateau pika disturbance significantly increased the plant species richness index and the species diversity index but did not significantly affect the species evenness index. Plateau pika disturbance significantly increased plant functional richness index （P<0.05） but had no significant effect on the plant functional evenness index or the functional divergence index. With plateau pika disturbance effects， the relationship between plant functional richness index and species richness index changed from a logarithmic function to a quadratic function， and the relationship between plant functional evenness index and species evenness index changed from non-significant to significantly positive. In addition， positive correlations between functional richness index and species richness index， and functional richness index and species diversity index were significantly decreased， as were negative correlations between functional divergence index and species richness index， and functional divergence index and species diversity index were significantly decreased. The findings of this study provide basic information for understanding the mechanism of species coexistence of plant communities under plateau pika disturbance and help understanding of how plant diversity effects in an alpine meadow ecosystem function under plateau pika disturbance. |
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| Keywords: | plateau pika disturbance alpine meadow plant species diversity plant functional diversity |
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