南宁园博园城市展园人工植物群落调查与分析

Investigation and Analysis on Artificial Plant Communities in City Exhibition Gardens of Nanning Garden Expo Park

为了解南宁园博园城市展园人工植物群落种植状况,并为园林类展会植物设计提供参考,对14个城市展园人工绿地进行抽样调查,采用ArcGIS划分群落,设置128个样方,结合文献进行数据分析。结果表明,调查范围内共有园林植物183种,隶属于65科133属;观花植物88种,观叶植物165种,观果植物37种,观茎植物18种,芳香植物14种;乡土植物96种,外来植物87种,珍稀植物11种。南宁园的总物种丰富度最高,梧州园最低;绝大部分城市展园植物群落各层次Shannon-Wiener、Simpson和Pielou均匀度指数均表现为灌木层最高、乔木和草本层次之。应加强对展园野生草本植物的管理,注重园内广西特有种、珍稀植物、藤本植物和湿生植物的应用。

In order to understand planting status of artificial plant communities in city exhibition gardens of Nanning garden expo park,and to provide references for plant design of garden exhibitions,sample survey was conducted on artificial green spaces of 14 city exhibition gardens,and ArcGIS was used to divide community.128 quadrats were set up,and data was analyzed based on literature.Results showed that there were 183 garden plants in study area,belonging to 65 families and 133 genera.There were 88 species of ornamental flower plants,165 species of ornamental leaf plants,37 species of ornamental fruit plants,18 species of ornamental stem plants and 14 species of aromatic plants.There were 96 native plants and 87 alien plants,including 11rare plants.Nanning garden had the highest total species richness,while Wuzhou garden had the lowest.Shannon-Wiener index,Simpson index and Pielou evenness index showed that shrub was the highest,followed by arbor and herb in most cummunities of city exhibition gardens.It was suggested that management of wild herbs should be strengthened,and application of Guangxi endemic plants,rare plants,vines and hygrophytes should be emphasized.