放牧制度对五趾跳鼠食性的影响  

The Influence of Different Grazing Systems on the Diet Habit of Allactaga sibirica

作　　者：娜日苏[1,2] 苏和[2] 武晓东[3] 格根图[3] 

机构地区：[1]内蒙古生态与农业气象中心,内蒙古呼和浩特010051 [2]中国农业科学院草原研究所,内蒙古呼和浩特010010 [3]内蒙古农业大学生态环境学院,内蒙古呼和浩特010018

出　　处：《中国草地学报》2009年第4期116-120,共5页Chinese Journal of Grassland

摘　　要：采用组织学鉴定法鉴定啮齿动物胃内含物，研究对栖息于短花针茅草原连续放牧区和轮牧区内的五趾跳鼠的食性。结果表明：1．五趾跳鼠是以植物性食物为主的杂食性啮齿动物，对植物性食物具有较强的择食性，放牧制度对该特性影响不显著；五趾跳鼠在短花针茅草原连续放牧区和轮牧区内的植物性食物组成相似度为0．71～0．88，采食频率最高的三种植物是冷蒿、无芒隐子草和木地肤。2．在植被条件较差时，连续放牧会促使五趾跳鼠更多地刨食植物根系，对草地的危害性增加。The diet habits of Allactaga tational grazing plots of Stipa breviflora sibirica which inhibited in the continuous grazing plots and rosteppe were studied using the identification method of rodent stomach content histology. The results showed.that： 1. Allactaga sibirica is an omnivorous rodent mainly foraging plant food, which has a strong preference for the plant food, the grazing systems has no obvious influence on this characteristic. The similarity index of the plant food composition of Allactaga sibirica in the continuous grazing plots and rotational grazing plots of Stipa breviflora steppe was 0.71 -0.88. The most frequently grazed three kinds of plants were Arternisia frigida, Cleistogenes songorica and Kochia prostrate. 2. At the time of poor vegetation conditions, continuous grazing will lead to Allactaga sibirica dig and eat more plant roots, and increase the danger of the grassland.

关 键 词：连续放牧 轮牧 五趾跳鼠 植物性食物 食物组成 

分 类 号：S812.6[农业科学—草业科学]