太原市不同建成时期居住区植物多样性研究

摘要

居住绿地是城市绿地系统的重要组成部分,对居住绿地植物多样性进行研究能为城市植物多样性的规划和保护提供基础数据.通过实地调查太原市15个居住区绿地植物,采用群落生态学的调查方法,分析太原市居住区绿地植物多样性与建成时期之间的关系.结果表明,所研究居住小区植物种类共142种,乔木、灌木和草本分别为79,40,19种;不同居住区绿地物种数分布差异大,平均28种,仅有6个物种的频度大于60％,国槐和胶东卫矛为优势种;植物多样性与建成时期密切相关,乔灌草的物种丰富度、均匀度都呈现递增趋势.%Residential greenspace is an important part of urban greenspaces system.Greater understanding of the characteristics and drivers of the distributing of vegetation in residential greenspaces will aid development and implementation of suitable polices and planning to protect urban plant diversity.Field investigations were performed in 15 residential areas in Taiyuan to discuss the relationship between the plant diversity and the construction period.The results showed that there were 142 species in residential greenspaces,including 79,40 and 19 species of tree,shrub and herb,respectively.The number of species varied greatly and the mean value was 28.There were 97 kinds of plants that their distribution frequency were less than 20％.However,the frequency of only 6 species were more than 60％.Sophora japonica L.and Euonymus kiautschovicus were the most common genus in the greenspaces of residential.Plant diversity was closely related to the construction period,and both the species richness and evenness increased with construction period.