Built area is 60%, and 48% area don't have rain water permeability in Seoul. Then green area is not sufficient in Seoul. A rooftop garden is suggested to solve the problem. However, as the number of rooftop gardens increases, the migration of natural...
Built area is 60%, and 48% area don't have rain water permeability in Seoul. Then green area is not sufficient in Seoul. A rooftop garden is suggested to solve the problem. However, as the number of rooftop gardens increases, the migration of naturalized plants are becoming a new problem. In this study, an alternative proposal of developing and managing the rooftop garden is suggested by monitoring of the flora change for 3 years(2003~2005) at rooftop areas in Seoul. The study sites are UNESCO building in central business district and Bethel kindergarten building in residential area in Seoul. The result shows that various plants are discovered as seeds in soil in the beginning, but as time goes by, the number of species of planted plants and migration plants is decreased while naturalized plant isn't. The naturalization index of study sites is compared with that of Tokyo, Japan. The result shows similarity in migration plant. But the result shows difference in including planted plants, because the artificial controls are possible in planted plants. Many migration plants may be migrated than planted plants in rooftop garden, and so soil of rooftop garden is needed a special caution. However, as time goes by, the stabilization of plant species is achieved, because of the condition of rooftop garden. And naturalization index is stabilized, too.
Key Words : Migration Plant, Naturalized Plant, Soil of Rooftop Garden