灰麝鼩的种群数量变动

汇集了1989～1996年云南保山市坝区的调查资料和其它地区的文献资料,对灰麝鼩种群数量变动进行了分析,灰麝鼩集中分布于海拔1650m的保山市坝区,具有较强的区域性和海拔高度的局限性特征.种群相对数量高峰分别出现在6月和8～12月.灰麝鼩的年变动在保山坝区居民区鼠型小兽群落中组成相对稳定.

Population Density Fluctuation in Crocidura attenuata

The field investigations were carried out in the plain areas in Baoshan City, Yunnan province from 1989 to 1996 and the related investigation materials were also collected from other districts in the Yunnan province, the population density fluctuation in Crocidura attenuata were analyzed. The results revealed that Crocidura attenuata is concentrated in the plain areas with altitude of 1*!650*!m in Baoshan. The seasonal fluctuations in outdoor habitats shows a double peak type: the emerged time(in June) and the period from August to December. The population dynamice of eight years shown that the constituent of Crocidura attenuata in the small mammal community is relatively stable in both indoor and outdoor habitats of the plain areas in Baoshan.