Investigation and analysis of native herbaceous ground cover plants in Beijing Olympic Forest Park

It is the main way of city landscape greening that landscape greenery space should be mainly composed of native plants. In order to provide theoretical reference for native herbaceous ground cover plant application in Beijing urban area, this study was carried out in Beijing Olympic Forest Park, which is wellknown for native plants application. By using quadrat method, plant species, frequency and growth vigor of native herbaceous ground cover plants were investigated in the park. Results show that there are 44 species of native herbaceous ground cover plants in the whole park (including the north park and the south park), which belong to 43 genera and 22 families. Besides, native herbaceous ground cover plant species in the north park is more than that in the south park. Frequency of plants belonging to Asteraceae, Leguminosae and Cruciferae is higher than that of other families. Three species, Ixeris sonchifolia, Melilotus suaveolens and Orychophragmus violaceus, are used most widely in the park. A suggestion is given that Orychophragmus violaceus, Ixeris sonchifolia, Taraxacum officnala, Viola yedoensis, Potentillae chinensis, Medicago sativa, Melilotus suaveolens and Vicia sativa should be widely applied in Beijing landscapes.