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有性生殖与食者-被食者体系中的极限环
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作者 郑久仁 《生态学杂志》 CAS CSCD 北大核心 1996年第5期70-75,共6页
Based on sexual reproduction and birth matrix-mating rule model (BMMR model), the following representatives of birth and death rates of sexual population were obtained: (dN/dt) b=N 2g b(N)=bN 2(1-uN+w 1N 2),(dN/dt) d=... Based on sexual reproduction and birth matrix-mating rule model (BMMR model), the following representatives of birth and death rates of sexual population were obtained: (dN/dt) b=N 2g b(N)=bN 2(1-uN+w 1N 2),(dN/dt) d=Ng d(N)=dN(1+vN+w 2N 2). Tus predator-prey system can present limit cycles with cusp geometry. The sexual population has humped curves of natural increase rate of individuals as function of population size and two equilibrium points: stable S and unstable X, S>X, an asexual population can only have one equilibrium point, i.e. stable S. 展开更多
关键词 种群生态学 有性生殖 食者被食者体系 极限环
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