【摘要】 东大山自然保护区是暗腹雪鸡的主要分布区之一.2004年4~5月对该地区围栏内外的植物群落进行了比较研究,以期多方面了解暗腹雪鸡种群的影响因子.研究表明:牧业围栏内外的植物盖度、草本高度、灌丛长度、灌丛宽度等差异极显著(P<0.01),物种丰富度和灌丛高度也有着显著性差异(P<0.05),草本密度和灌丛密度方面差异不显著(P>0.05);各种参数中,只是物种丰富度和灌丛密度是围栏外高于围栏内,其余均为围栏内高于围栏外.多变量方差分析HotellingT2检验则表明(Hotelling s Trace=3.186,F=5.974,P(Sig.=0.02)<0.01):围栏内外的植物总体差异极显著,并分析了差异的原因.在此基础上,讨论了牧业围栏对暗腹雪鸡的生存可能造成的影响:有利于避敌和食物资源量的增加,但有可能影响其食物的选择范围.更多还原

【Abstract】 Dongdashan Nature Reserve is one of the main natural distribution areas of Himalayan Snowcock(Tetraogallus himalayensis).The impacts of grassland fencing on rangeland plant communities were studied from April to May,2004,in order to illustrate the various impact facts to the Himalayan Snowcock.The results indicated that the cover of vegetable,the height of grasses,the length of shrub,the breadth of shrub and so on outside and inside the fences were significant different(P<0.01),while the species richness and the density of shrub had obvious different(P<0.05),but the density of grasses and the density of shrub did not reach the significant level(P>0.05);Among the various indexes,they were higher inside the fences than that outside the fences,except for the species richness and the density of shrub.Multivariate variance analysis by the test of Hotelling T2(Hotelling’s Trace=3.186,F=5.974,P(Sig.=0.02) <0.01)showed that: the plant between outside and inside the fences were significant different on the whole.And based on the conclusion we disscused the possible impact of husbcmdry fence to the Himalayan Snowcock,the conclution showed that the fence was favor of avoiding being captured and feeds resources quantity of the Himalayan snowcock.,but it could effect the food selection range of them.更多还原