ACTA THERIOLOGICA SINICA ›› 2018, Vol. 38 ›› Issue (2): 148-157.DOI: 10.16829/j.slxb.150099

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Impact of plateau pikas(Ochotona curzoniae)on Elymus nutans and legume plant physiological properties in alpine meadow

XU Hualei, YAN Hongyu, DENG Teng, ZHANG Rui, LIU Wei#br#   

  1. Northwest Institute of Plateau Biology,Chinese Academy of Science
  • Online:2018-03-30 Published:2018-06-19


许华磊 严红宇 邓腾 张瑞 刘伟   

  1. 中国科学院西北高原生物研究所
  • 通讯作者: 刘伟


Activities of plateau pikas(Ochotona curzoniae)affect physiological properties of different plant in alpine meadow communities by foraging. A controled experiment was conducted to determine the effects of disturbance by plateau pikas on physiological properties of legume and Elymus nutans from 2010 to 2012 in Guoluo, Qinghai province. The results showed that(1)There were no significance differences among the treatments in May and June: the aboveground biomass, plant height, tillers number, tillers length, canopy coverage all decreased, but the lengths and the number of Elymus nutans leafs all increased initially, and then decreased with increased disturbance levels by plateau pika foraging in July and August.(2)The increasing range of plants which were preferred by plateau pikas in control(CK)was significantly higher than that in high density areas(HD)(P<0.05). Plateau pika foraging intensity showed a negative correlation during legume late growth stage. The foraging intensity in the low or medium densities is favorable to Elymus nutans leaf growth, but greater feeding intensity is unfavorable to its growth.(ii)Higher plateau pika foraging intensity has obvious inhibitory effects on the increasing range of plants which were preferred by plateau pikas.

Key words: Alpine meadow, Foraging disturbance, Plateau pikas, Plant physiological properties



关键词: 高原鼠兔, 高寒草甸, 取食干扰, 植物个体特征