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.
出处
《植物保护》
CAS
CSCD
北大核心
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)
关键词
草原
高原鼠兔
密度
洞口系数
grassland
Ochotona curzoniae
density
burrow index
