【摘要】 生态系统是一个复杂的大系统,很多重要的生态学理论问题都是以生态位(niche)和生物群落概念为基础的。本文将生态位和群落抽象出来,看作是一个耗散结构,建立生态系统中基本概念的量化算子,利用系统模糊分析理论给出具有明确生物意义的生态位和群落的Fuzzy数学模型。并以此讨论生态系统中其他相关概念的数学模型、群落的水平和垂直格局及物种间在资源、斑块、时间三维模糊集上的互惠,共处和竞争关系。初步构建起复杂生态大系统的数学理论框架。更多还原

【Abstract】 The ecological system is a very complex system; many ecological theorical problems are (based) on niche and community. This paper considers niche and community as a dissipative structure and finds out link of basement between fuzzy mathematics and ecological system. At the same time, it gives dynamic fuzzy model of niche and community.Owing to the requirements of existence,evolution and development, the tendency to preference choice for optimum resources often results in (competition.) This paper discusses the relationships among the mutual benefit, Coexistence and (competitions) in the three dimensional fuzzy set. By fuzzy theory and system fuzzy analysis, fuzzy (sets,) of resources, pitch and time, a fuzzy model for competion is given.更多还原