依赖个体分布的种间竞争模型的建立

以一个栖息地的2个物种为研究对象,通过假设其个体的分布和个体对同一资源的竞争方式,以实地框架模型为基础,采用自底而上的方式,建立依赖个体分布的种间竞争模型,将个体分布划分为泊松分布、负三项分布和独立负二项分布3种形式,将个体对资源的竞争方式划分为争夺性竞争、竞赛性竞争和兼容性竞争3种类型。在一个物种的竞争方式为争夺性,而另一个为竞赛性或兼容性的情形下,对个体分布服从负三项分布的情况进行了建模,通过对模型的分析,得出争夺性竞争和竞赛性竞争都是兼容性竞争的特殊情况。当个体分布服从泊松分布和独立负二项分布时,可推导出相应的2个物种对同一资源竞争的种群动态模型。

Interspecific Competition Models Dependent on Distribution of Individuals

Assuming that the distribution of individuals and the competition mode of individuals are for the same resource, interspecific competition models dependent on distribution of individuals are established in a bottom-up manner for two species in a habitat according to the site-based framework model. The assumed distribution of individuals has three types, i.e. Poisson distribution, the negative trinomial distribution and the independent negative binomial distribution. The assumed competition model of individuals in the same resource has three kinds, i.e. scramble competition, contest competition and intermediate competition. According to the combination of competition models of the two species and the distribution of individuals, various interspecific competition models can be derived. In this paper, two different interspecific competition models with the negative trinomial distribution are established, within which the competition modes are of scramble vs. contest and scramble vs. intermediate competition s respectively.