物种竞争的动力机制及数值模拟分析  

The Dynamic Mechanism and Analysis of Numerical Simulation of Species Competition

作　　者：梁仁君[1] 林振山[1] 陈成忠[1] 

机构地区：[1]南京师范大学地理科学学院

出　　处：《生物数学学报》2007年第3期569-575,共7页Journal of Biomathematics

基　　金：国家自然科学基金项目(40371044);国家"十五""211"工程重大项目

摘　　要：在徐彩琳和Tilman研究工作的基础上,将竞争系数引入集合种群动力模式,建立了集合种群物种之间竞争的数学模型,并对集合种群5-物种的竞争动态进行了计算机模拟研究.结果表明:物种竞争排除与共存受迁移扩散能力和竞争能力影响很大,排除原理在理论上是存在的,在广域集合种群和实际中物种是竞争共存的,共存的条件是其竞争能力与扩散能力呈非线性负相关关系,竞争的结果使物种的强弱序列发生变化.Species competition is one of the important ecological courses that influence the evolvement of ecosystem. On the basis of Xu cailin and Tilman＇s research, this article introduces competition coefficient into dynamical model of metapopulation and establishes mathematical models of competition among the metapopulation species, at the same time, the competition trends of the five metapopulation species are simulated on computer research. The results indicates that the spread and competition ability play a great role in elimination and coexistence of species competition, the elimination principle can exist in theory, species are competitive and coexist in wide metapopulation and reality, the condition of which is the competition ability have a nonlinear minus correlation with the spread power, the outcome of competition makes the superior and inferior sequence changed.

关 键 词：物种竞争 迁移能力 竞争能力 模型与模拟 

分 类 号：Q948.12[生物学—植物学]