Abstract:In order to understand the flora characteristics of vascular plants in Longyandong Forest Farm, Guangzhou, Guangdong Province, the species composition, flora characteristics and endangered grade of vascular plants were investigated and analyzed by route survey. The results showed that there were 783 species, belonging to 473 genera and 151 families in the forest farm, including 11 dominant families in ferns, such as Lindsaeaceae, Adiantaceae, Dryopteridaceae, and 62 dominant families in spermatophytes, such as Convolvulaceae, Menisper- maceae, Caesalpiniaceae and Vitaceae. Compared with the areal types, the areal types at species level were more extensive than those at genera level with large tropical and subtropical components. Superior topographic features and unique subtropical humid climate interpenetrate and interweave, forming a lot of endemic to China species in the forest. There were also 12 key protected plants, eg. Alsophila spinulosa and Aquilaria sinensis. Especially A. spinulosa was in a vulnerable state. There were 681 resource species in the forest farm, which could be divided into four types, such as medicinal, edible, ornamental and industrial raw material species, and the medicinal species had the largest number covered 71.14% of the forest farm. Therefore, it was suggested to develop and utilize the resource plants and strengthen the protection of rare and endangered plants in the forest farm.
