EVOLUTIONARY DYNAMIC MODEL OF POPULATION WITH NICHE CONSTRUCTION AND ITS APPLICA

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EVOLUTIONARY DYNAMIC MODEL OF POPULATION WITH NICHE CONSTRUCTION AND ITS APPLICATION RESEARCH

Based on the theories and approaches in biomechanics, the mechanism and pattern of niche construction were discussed systematically. Through establishing the spatial pattern of niche and its measuring-fitness formula, and the dynamic system models of single- and two-population with niche construction, including corresponding theoretical analysis and numerical simulation on their evolutionary dynamics of population and the mechanism of competitive coexistence, the co-evolutionary relationship between organisms and their environments was revealed. The results indicate that population dynamics is governed by positive feedback between primary ecological factors and resource content.Niche construction generates an evolutionary effect in system by influencing the fitness of population. A threshold effect exists in single population dynamic system. In dynamic system of two competitive populations, niche construction can lead to alternative competitive consequences, which may be a potential mechanism to explain the competitive coexistence of species.

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作 者: LI Zi-zhen HAN Xiao-zhuo LI Wen-long  
作者单位:LI Zi-zhen(School of Mathematics and Statistics, Lanzhou University, Lanzhou 730000, P. R. China;Key Laboratory of Arid Agroecology under Ministry of Education, Lanzhou University,Lanzhou 730000, P. R. China)水利论文e6k/J]I-DV
HAN Xiao-zhuo(Key Laboratory of Arid Agroecology under Ministry of Education, Lanzhou University,Lanzhou 730000, P. R. China)水利论文Cdz"YLkz;U
LI Wen-long(School of Pastoral Agriculture Science and Technology, Lanzhou University,Lanzhou 730000, P. R. China) 
刊 名:应用数学和力学(英文版)  EI SCI
英文刊名:APPLIED MATHEMATICS AND MECHANICS(ENGLISH EDITION) 
年,卷(期):2006 27(3) 
分类号:Q141 
关键词:niche construction   population dynamics   evolutionary kinetics   model   competitive coexistence  
机标关键词:APPLICATION RESEARCHdynamic systemnumerical simulationpopulation dynamicspositive feedbackspatial pattern 
基金项目:the National Natural Science Foundation of China,国家社会科学基金 
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