兽类学报2016，Vol.36Issue(2)：152-157,6.DOI:10.16829/j.slxb.201602003
放牧对布氏田鼠主要食物选择的影响
Influence of sheep grazing on major food selection by Brandt' voles (Lasiopodpmys brandtii)
摘要
Abstract
Food selection by animals is determined by their food resources,food quality and food preferences.Although livestock grazing can significantly decrease quality and quantity of the preferred-plant by rodents,it is still not clear how rodents respond to livestock grazing in their food selection.During May to October 2014,we conducted a food selection experiment in the Maodeng pasture,Xilinhot of Xilingol League in Inner-Mongolia.Based on vegetation changes in large-scale enclosures after five years livestock grazing experiment,we investigated food selection of the Brandt's voles by using cage experiments.We found that grazing increased the coverage of Cleistogenes squarrosa,and decreased the coverage of Leymus chinensis and Stipa krylovii.C.squarrosa was the predominant plant species in the enclosures.Grazing had no significant influence on the absolute feeding frequencies on three plants by Brandt's voles.There was no significant difference in feeding frequency of S.krylovii and C.squarrosa between seasons,but the feeding frequency of L.chinensis was highest in summer.The preference ranking of the three plants by voles was:L.chinensis ＞ S.krylovii ＞ C.squarrosa.However,both seasonal and grazing factors showed no significant impacts on preference index of the three plants by voles.Our results indicate that food selection by Brandt's voles was relatively stable under grazing pressure,suggesting they had high capacity for adapting to the changing food resources caused by grazing and seasonal factors.We speculate that Brandt's voles achieve the balance of food components by adjusting feeding efforts.关键词
放牧/植被变化/布氏田鼠/食物选择Key words
Brandt's voles (Lasiopodpmys brandtii)/Food selection/Grazing/Vegetation variation分类
生物科学引用本文复制引用
侯祥磊,李国梁,宛新荣,张知彬..放牧对布氏田鼠主要食物选择的影响[J].兽类学报,2016,36(2):152-157,6.基金项目
国家重点基础研究发展计划973项目(2007CB109100) （2007CB109100）
