摘要
马尾松毛虫种群动态模拟研究马小明(北京大学环境科学中心北京100875)关键词马尾松毛虫,种群动态,平衡点,摸拟马尾松毛虫是我国南方马尾松林的主要害虫,其发生的面积广,造成的损失大。因此,对其种群动态的研究不但具有昆虫种群生态学的理论意义,而且对害虫...
According to characters of the relation between the population dynamics of Dendrolimus punctatus and the related environment and Nicholson-Bailey Model,this paper recommends a timedelay structure and stable control item,and establishes a simulation model of Dendrolimus punctatus population dynamics with difference equation methods.Based on the model,the mechanism of the population dynamics is discussed. Following results are obtained:the stronger the ability for the pest control by forest itself,the lower the equilibrium position of the population is and the better the stability is;the larger the inner growth rate of the population,the higher the equilibrium position is and the worse the stability is.
出处
《林业科学》
CAS
CSCD
北大核心
1994年第1期88-92,共5页
Scientia Silvae Sinicae
关键词
马尾松毛虫
种群动态
模拟
Dendrolimus punctatus,Population dynamics,Equilibrium point,Simulation