【摘要】 从物种的种群数量波动、生殖隔离和行为特征几方面描述了物种在进化过程中形成的结构稳定机制 ,同时从环境扰动的角度阐述了物种对干扰的适应性和抵抗力 .最后指出 ,在物种的进化过程中 ,同时存在着多因子的双重作用 ,自然选择仅仅只是其中的客观条件之一 ,而物种本身作为活的生命体 ,还具有维持自身稳定和适应环境的能力更多还原

【Abstract】 The creature’s body type stability formed during the evolution period has been summarized in the aspect of the species’ quantity variation, breeding isolation and behavior character. Meanwhile the species’ adaptation and resistance to the interference from environment have been discussed. The article pointed that there is bio factor in evolution of creature and natural selection is only one of the factors. The species, as a living thing, has the active ability to maintain the body type stability and to adapt itself to the environment.更多还原