地带性森林群落物种多样性的比较研究

在群落调查以及文献收集的基础上，对暖温带地区、暖温带和亚热带过渡地区、亚热带地区以及热带地区的典型地带笥植被不同群落类型群落多样性进行了分析和研究。结果发现这４类地区物种多样性的变化具有一定的规律性，具体表现在热带地区群落乔木层的物种丰富度和多样性为最高，然后依次是亚热带地区、秦蛉地区和东灵山地区；灌木层的物种丰富度和多样性则以亚热带地区为最高，其次是秦岭地区，热带地区的则仍高于东灵山地区；灌木层

A COMPARATIVE STUDY ON SPECIES DIVERSITY IN ZONAL FOREST COMMUNITIES

Based on plant community investigation and references available,we calculated and analyzed the species richness,diversity,evenness of main communities of the typical vegetation distributed in warm temperate zone (represented by Dongling Mt.),the ecotone zone of warm temperate and subtropics (represented by Qinling Mt.),subtropical zone (represented mainly by Xishuangbanna),respectively.We found that the species richness and diversity of shrub layer were highest in subtropical zone and Qinling ranked second.Dongling Mt.had the lowest species richness and diversity.However,the change of species richness and diversity of herb layer almost oppositly to that of tree layer.In addition to the latitude change,we also analyzed the changes of species richness and diversity along the altitude and community types.Probably due to noise of other enviromnental factors,no obvious tendency of change of species richness and diversity was found.