植物群落与异质性

异质性，对应于植物群落所要求的同质性模型，广泛地存在于植物群落中，但是对其生态学意义的解释却极为模糊。就植物群落中生物的化感作用和非生物的地形因子等两个方面的原因，揭示了植物群落异质性的潜在机制，并阐述了异质性对植物群落的物种组成、种群的分布格局、生态位和群落的动态等方面具有强烈的影响。其结果表明，植物群落组成、结构和动态，其实质就是异质性的趋同化和再异质化的过程。

PLANT COMMUNITY AND HETEROGENEITY

The concept of heterogeneity, comparing with the requirement of homogeneity in plant community, was widely used in plant community ecology. However, less attention was paid to its ecological interpretation.This paper dealed with the potential mechanisms of heterogeneity in community by biotic and abiotic attributes in allelopathy and topographic factors , then discussed the effects of heterogeneity on sampling, pattern, niche, species composition, and dynamics.Results showed that plant community was processing on the cycle of divergence and convergence.