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内蒙古黑线毛足鼠肥满度

范尊龙1,2,王勇1**,杜森云3,王军3   

  1. 1中国科学院亚热带农业生态研究所, 亚热带农业生态工程重点实验室, 长沙 410125; 2中国科学院大学, 北京 100049; 3内蒙古锡林郭勒盟东乌珠穆沁旗草原工作站, 内蒙古东乌珠穆沁旗 026300)
  • 出版日期:2013-12-10 发布日期:2013-12-10

Fatness degree of striped hairy-footed hamster (Phodopus sungorus) in Inner Mongolia, China.

FAN Zun-long1,2, WANG Yong1**, DU Sen-yun3, WANG Jun3   

  1. (1Key Laboratory for Agroecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China; 2University of Chinese Academy of Sciences, Beijing 100049, China; 3Dongwuzhumuqinqi Grassland Station, Dongwuzhumuqinqi 026300, Inner Mongolia, China)
  • Online:2013-12-10 Published:2013-12-10

摘要: 以胴体重为指标建立肥满度指数K′=100WN/L3 (g·cm-3),分析了年龄、性别、放牧强度、栖息地植被状况等特征对内蒙古草原黑线毛足鼠(Phodopus sungorus)肥满度的影响。结果表明:黑线毛足鼠肥满度指标性别间差异不显著;Ⅰ龄组黑线毛足鼠肥满度最小且与Ⅱ龄组、Ⅲ龄组、Ⅳ龄组差异显著(P<0.05);不同放牧强度下肥满度无显著差异;植被覆盖度在0.61以上的样地黑线毛足鼠肥满度最小,且与其他3组差异极显著(F=5.11, P<0.01);黑线毛足鼠肥满度与种群数量间无明显相关性。

Abstract: Taking the carcass weight as the index for establishing fatness degree index (K′), this paper analyzed the effects of striped hairy-footed hamster (Phodopus sungorus) age and sex, grazing intensity, and habitat vegetation status on the K′ of the P. sungorus in Inner Mongolia of China. No significant differences were observed in the K′ between the males and females. The age group I had the smallest K′, being significantly different from age groups II, III, and IV. The K′ was higher in immaturity group than in maturity group. The K′ was not significantly different under different grazing intensities. The K′ varied significantly with the plots of different vegetation coverage, being the smallest in the plots of a vegetation coverage >0.61. There was no obvious correlation between the P. sungorusK′ and population size, suggesting that the K′ couldn’t be used as an indicator for the P. sungorus population dynamics.