草甸草原割草地植物群落α多样性与草原鼢鼠种群密度的关系  

Relation of α-diversity in plant community with population abundance of Myospalax aspalaxin clipping ground of meadow steppe

作　　者：柴享贤 袁帅[1,2] 武晓东[1,2] 付和平[1,2] 岳闯[1,2] 卢志宏[1,2] 乌云嘎 

机构地区：[1]内蒙古农业大学生态环境学院,内蒙古呼和浩特010019 [2]草业与草地资源教育部重点实验室,内蒙古呼和浩特010019 [3]阿拉善左旗草原工作站,内蒙古巴彦浩特750306

出　　处：《草业科学》2016年第4期778-784,共7页Pratacultural Science

基　　金：农业部公益行业项目(201203041);内蒙古科技计划项目(20140153)

摘　　要：为探究植物群落α多样性与草原鼢鼠(Myospalax aspalax)种群密度的关系,本研究于2012-2014年,在内蒙古锡林浩特市白银库伦牧场的天然割草地内定点布设3个平行固定样方(50m×20m),连续3年在野外进行了植物样方与草原鼢鼠土丘数的测定。以单位公顷新土丘个数代表当季草原鼢鼠种群的相对密度,通过Margalef指数、ShannonWiener指数、Pielou指数来确定植物群落的α多样性。结果显示,1)草原鼢鼠的活动会对植物群落多样性造成影响,但未达到显著水平(P>0.05)。2)草原鼢鼠种群数量与植物群落多样性的互作关系中,草原鼢鼠对植物群落多样性的影响更强。其中,草原鼢鼠种群数量对植物群落的均匀度影响最大,而植物群落的物种丰富度与草原鼢鼠种群密度的相关性最大。The experiment with three fixed quadrates（50m×20m）was conducted to investigate the relationships betweenαdiversity of plant community and the number of soil mound of Myospalax aspalaxin the natural clipping ground in Baiyinkulun pasture,Xilinguole,Inner Mongolia.We investigated the plant community diversity and the population abundance of M.aspalaxranged from 2012 to 2014.The plant community diversity included Margalef index,Shannon-Wiener index and Pielou index.The population abundance was represented by the number of new soil mound of M.aspalax.The results showed that,1）The movement of M.aspalaxhad no significant influence on plant community in the research area（P〉0.05）,and the influence of plant community diversity on M.aspalax was higher than that of M.aspalaxon plant community diversity;2）M.aspalaxpopulation abundance had the strongest effect on evenness index of plant community,while the plant species richness index had the strongest correlation with M.aspalaxpopulation abundance.

关 键 词：草原鼢鼠 多样性 群落 土丘 

分 类 号：S812[农业科学—草业科学]