摘要
昆虫种群生态过程的数学模拟,一般以单种种群在不同发育阶段的数量变动为基础。这种模拟研究在国内外已作过很多。但是。
Based on the growth features of aphid population and mathematical principles,a simulationmodel is deduced as.N(t)=(Sβ3/r)(t-α)^(β-1).exp[-(t-α)β/r].Where:N(t)is the popula-tion density at t time;S is the total number of aphid population;α is the earliest day thepopulation emerges;β is the parameter of curve form,describing curve type;r is the relativegrowth rate.There are two turning points in the curve,showing an interval between prospe-rity and decline of population.After testing on real data,this extended Weibull model isproved practisible in IPM computers.
出处
《生态学杂志》
CAS
CSCD
北大核心
1990年第5期26-28,35,共4页
Chinese Journal of Ecology
关键词
种群生态模型
棉蚜种群
cotton aphid population
growth feature
simulation model
