Abstract: Aromatic plants are important functional plants in urban gardens. This paper analyzes the geographical components of families and genera on the basis of collecting the list of aromatic plants in Guangdong province, and investigates their landscape application. The results show that there are a total of 122 families, 334 genera and 703 species (including varieties and subspecies) of aromatic plants in Guangdong province. The dominant families are Lauraceae, Rutaceae, Zingiberaceae, Labiatae, Compositae, Myrtaceae, Leguminosae and Magnoliaceae. From the perspective of geographical components of plants, 63 families belong to tropical components, accounting for 70.79% of the total number of families. There are 183 genera belonging to tropical components, accounting for 58.84% of the total genera. The analysis of family and genera geographical components show that the tropical components of aromatic plants in Guangdong province are obvious, which is consistent with the geographical location of Guangdong province in the subtropical monsoon region. Among aromatic plants, there are 529 native plants, accounting for 75.25%, and 174 exotic species, accounting for 24.75%, indicating that native plant resources in aromatic plants are abundant. There are 455 kinds of aromatic plants in garden application, but the aromatic characteristics are not clear. It is suggested to further screen excellent aromatic plants, increase the garden application of aromatic woody liana species, and introduce local plants such as Compositae, Labiatae, Umbelliferae, Rutaceae to expand the scope of use of aromatic plants.

Key words: aromatic plants, geographical elements, garden application, Guangdong province

摘要： 芳香植物是城市园林中重要的一类功能植物，本文在收集和编制广东省芳香植物名录的基础上对其进行科属地理成分分析，并调查芳香植物种类的园林应用情况。结果显示，广东省芳香植物共有122科334属703种(含变种和亚种)，优势科为樟科Lauraceae、芸香科Rutaceae、姜科Zingiberaceae、唇形科Labiatae、菊科Compositae、桃金娘科Myrtaceae、豆科Leguminosae、木兰科Magnoliaceae；植物地理成分分析表明，热带成分共63科183属，分别占总科数的70.79%和总属数的58.84%；广东省芳香植物的热带成分较为明显，这与该省地处亚热带季风区的地理位置相符；芳香植物中乡土植物529种，占75.25%，外来物种174种，占24.75%，说明广东省乡土芳香植物资源较为丰富。芳香植物的园林应用种类有455种，种类不少，而芳香特色尚不鲜明，建议进一步筛选优良芳香植物，加大芳香类木质藤本种类的园林应用，同时引入菊科、唇形科、伞形科、芸香科等乡土植物，拓展芳香植物的使用范围。

关键词: 芳香植物, 地理成分, 园林应用, 广东省