藏北草原高原鼠兔密度调查方法探讨  

Methods for investigating the density of the plateau pika in Northern Tibetan Plateau

作　　者：陈剑[1,2] 王忠全 王勇[1] 李波[1] 扎西 小扎西 洛桑达娃 张美文[1] 

机构地区：[1]中国科学院亚热带农业生态研究所,长沙410125 [2]中国科学院研究生院,北京100049 [3]西藏自治区那曲地区科技局,852000

出　　处：《植物保护》2008年第4期114-117,共4页Plant Protection

基　　金：国家科技支撑课题(2006BAC01A04);中国科学院知识创新项目(KSCX2-YW-N-52);国家农业成果转化资金项目(2007F40090556)

摘　　要：2006年对藏北高寒草原牧场的高原鼠兔种群密度进行了抽样堵洞调查,以夹捕法调查作为补充,同时通过捕尽法确定洞口系数约为0.11,在此基础上以有效洞口数推算调查点高原鼠兔绝对密度约为53.72只/hm2。通过相关分析,建立高原鼠兔种群-洞口密度增长模型,可根据洞口密度估算高原鼠兔种群密度,为西藏草原鼠类防治提供参考。The burrow index is an index for relative density of small burrowing rodents. It is possible to transfer relative density into absolute one with this index, such as burrow density. A field investigation of the plateau pika Ochotona curzoniae was carried out on grasslands in Naqu of Tibet in 2006. By plugging the burrows in sampling plots and check-up after 24 hours, the relative pika density was estimated with the percentage of open burrows. Pikas in the plots were trapped out to produce a burrow index, which was 0.11. The average burrow density could be converted into an absolute density of, 53.72 ind./hm^2. Correlations between plateau pika population density and other factors were also analyzed, which was used to establish a ＂population-burrow＂ density-increasing model.

关 键 词：草原 高原鼠兔 密度 洞口系数 

分 类 号：S482.55[农业科学—农药学]