摘要
采用数学方法分析了自然条件下某生物种群的寿命分布 ,得到了种群寿命分布函数和种群内禀死亡常数 ,并由此推导出了种群寿命的数学期望和方差。并以瓜螟种群试验资料 ,拟合了瓜螟第二、三代寿命分布函数 ,拟合效果较好。
The mathematical methods were used to make research into the living populations lifetime distribution,population lifetime distribution model and the intrinsic death invariant of the population were observed,and population lifetime' mathematical expectation and variance were induced.Experiment data of melon borer's population was used to fit the second and third generation population distribution function,and testing result was quite good.
出处
《西北农林科技大学学报（自然科学版）》
CSCD
北大核心
2002年第5期117-120,共4页
Journal of Northwest A&F University(Natural Science Edition)
关键词
种群
瓜螟种群
存亡规律
寿命分布
分布函数
内禀死亡常数
数学期望
population
lifetime distribution
distribution function
intrinsic death invariant
mathematical expectation
