安康市城区绿地芳香植物多样性分析

Diversity Analysis of Aromatic Plants in Urban Green Spaces of Ankang

通过调查安康市主城区不同类型城市绿地中芳香植物的树种资源应用情况,分析其种类构成、重要值、多样性、乔灌比等指标,得出安康市适应种植的芳香植物品种,为安康市资源优化配置提供理论参考。采用野外调查和资料查阅相结合的方法,对研究区内各样地芳香植物的种类构成、物种多样性等进行实地调查。安康市主城区共有芳香树种60种22科42属,乡土树种51种,主要优势种为香樟、桂花、红叶石楠等;乔灌比值为1.45;常绿与落叶比值为0.93;芳香乔木中Margalef、Shannon-Wiener、Simpson、pielou指数分别为2.793、2.314、0.841、0.733,芳香灌木各指数分别为1.960、1.703、0.711、0.635;芳香程度以芳香48种为主,香味来源以花香51种为主。通过调查和数据分析,不同的城市绿地所含芳香植物品种多样性均存在不同。结合安康市未来宜居环境建设的发展趋势,对安康市园林城市建设中芳香植物的应用提出改善策略。

By investigating the application of aromatic plant resources in different types of urban greenbelt in Ankang city and analyzing its species composition, important value, diversity, arbor-irrigation ratio and other indicators, the aromatic plant varieties suitable for planting in Ankang city were obtained, which provided theoretical reference for optimizing the allocation of resources in Ankang city. Based on field investigation and data consultation, we investigated the species composition, species diversity and plant landscaping status of aromatic plants in the study area. The results showed that among all the aromatic plants in the Ankang city, there were in all 22 families, 42 genuses and 60 species. The indigenous tree had 51 species, and the main dominant species were Cinnamomum camphora, Osmanthus fragrans and Photinia serrulata. Ratio of tree-shrub was 1.45, and the proportion of evergreen to hardwood was 0.93. The Margalef index, Shannon-Wiener index, Simpson index and pielou index of arbor layer were 2.793, 2.314, 0.841 and 0.733, respectively, and the corresponding indices of shrub layer were 1.960, 1.703,0.711 and 0.635, respectively. The aromatic degree mainly consisted of 48 aromatic plants, the fragrance source mainly came from 51 kinds of flower fragrance. Through investigation and data analysis, it was found that the varieties of aromatic plants and the configuration forms of aromatic plants in different urban green spaces were different.Combined with the development trend of livable environment construction in Ankang in the future, this study could put forward some improvement strategies for the application of aromatic plants in Ankang garden city construction.