陆地植物群落物种多样性维持机制

从空间尺度和特定生物区系两个尺度对物种多样性的维持机制进行了综述在大的空间尺度，简述了引起物种多样性存在差异的物理和自然因子的作用，包括植物群落的历史和年龄、梯度变化（纬度梯度、水分梯度、海拔梯度、土壤养分梯度）、面积效应和隔离程度；针对特定生物区系，从生物因素（生产力、种间关系、林隙动态）和非生物因素（演替、干扰及空间异质性、人类活动）方面论述其与物种多样性之间的关系.

Maintaining mechanism of species diversity of land plant communities

The maintaining mechanism of species diversity of land plant communities is a key and advancing edge in biodiversity study.Botanists and ecologists have presented many hypotheses and theories with controversies,and no general theory system was available.In this paper,the problem was reviewed mainly on two scales.The first was big spatial scale,aiming at the physical and natural factors that affect the species diversity,including histories and ages of plant communities,gradient changes such as latitude gradient,water gradient,altitude gradient and soil nutrients gradient,area effect,and isolation; and the second was concentrated on a special plant community,and mainly discussed the relationships of biodiversity with biotic factors (primary productivity,relationship between species,and gap dynamics) and abiotic factors (succession,disturbance and spatial heterogeneity,and human activity).