Abstract:In order to reveal the plant resources and ecological environment changes in Guangzhou, the vascular plants and vegetation in hotspot areas were investigated from 2017 to 2019. A total of 3 508 species of vascular plants belonging to 1 362 genera and 230 families were recorded, of which 174 species in 78 genera and 25 families are lycophytes and ferns, 34 species in 20 genera and 8 families are gymnosperms, and 3 300 species in 1 264 genera and 197 families are angiosperms. There are 20 national and 5 provincial key protected plants, and 131 alien invasive plants. It also shows that the flora of seed plants has the transitional characteristics from tropical to subtropical and the typical families includes Lauraceae, Fagaceae, Pentaphylacaceae, Phyllanthaceae, Aquifoliaceae, Celastraceae and Theaceae. The vegetation investigation and evaluation indicated that the community composition and structure of different vegetation types had gone through a positive and healthy developmental tendency and the forest vegetation has been succeeding toward the zonal climax community types under the circumstance of strict ecological protection and sustainable utilization. These results present the comprehensive basic data on the current status of plant diversity and the dynamics of vegetation changes in the recent 10 years, which are important for making biodiversity conservation and development strategies and keeping the local biosecurity in Guangzhou.