摘要
本文着重研究了黑线仓鼠(Cricetulus barabensis)种群内部因素及环境因子对其种群数量变化的影响,其中4月份的平均胎仔数与当年7～12月份种群数量高峰相关性显著,是预测预报的基础;环境因子中8月份月均气温及极端降水量影响害鼠的怀孕率、胎仔数等,对其种群数量变动有一定影响作用。
The factors of Cricetulus barabensis population itself and of environment effect on quantitative dynamics of the popuulation are researched in this paper. There is a dominant relatedness between an average of litter size in Apr. of the population and the maximum quantitaty of the population from Jul. to Dec. in same year. The relatedness is the base of forecasting in quantitative dynamics of the population. Average temperature in Aug. and maximum day—precipitation affect the pregnancy rate and litter size of the population and so the quantitative dynamics of the population.
出处
《山东科学》
CAS
1991年第2期5-8,共4页
Shandong Science
关键词
黑线仓鼠
种群数量
预测
山东
crecetulus barabensis
forecast
pregnancy rate
litter size
temperature
day-precipitation
