南京城市森林的植物生物多样性研究

Study on Plant Biodiversity of Urban Forest in Nanjing City

本研究以南京城市森林为研究对象,对城市森林植物基本特征、物种组成及多样性进行了分析,以期为城市森林的植物多样性作出科学评价。研究表明多样性指数以阔叶混交林Pielou指数、Shannon-Wiener指数和Simpson指数最高,针阔混交林、黑松林、栓皮栎林、枫香林物种多样性指数相差不大,而毛竹林指数最低。三层多样性指数分析表明:黑松林、栓皮栎林、枫香林中三层多样性指数依次为灌木层、草本层和乔木层;而阔叶混交林、针阔混交林中三层多样性指数依次为灌木层、乔木层和草本层;毛竹林的三层多样性指数依次为草本层、灌木层和乔木层;Sorenson相似性系数研究表明,毛竹林和黑松林指数最小,阔叶混交林和针阔混交林指数最大。初步研究表明,南京城市森林的植物多样性群落特征差异显著。

This study analyzed the basic characteristics,species composition and diversity of urban forest plants in order to make a scientific evaluation of the plant diversity of urban forest,by taking Nanjing urban forest as the research object.The research shows that the species diversity index of broad-leaved mixed forest is the highest in Pielou index,Shannon-Wiener index and Simpson index,while the species diversity index of coniferous and broad-leaved mixed forest,black pine forest,cork oak forest,and maple forest is similar,while the index of bamboo forest is the lowest.The analysis of diversity index of three layers showed that the diversity index of three layers in black pine forest,cork oak forest and maple forest was shrub layer,herb layer and tree layer in turn;The diversity index of the three layers in the broad-leaved mixed forest and the coniferous and broad-leaved mixed forest are shrub layer,tree layer and herb layer in turn;The diversity index of the three layers of Phyllostachys pubescens forest is herb layer,shrub layer and tree layer;Sorenson similarity coefficient study showed that the index of Moso bamboo forest and black pine forest was the smallest,and the index of broad-leaved mixed forest and coniferous and broad-leaved mixed forest was the largest.The preliminary study showed that the characteristics of plant diversity community in Nanjing urban forest were significantly different.