2023 Volume 49 Issue 1 Pages 75-80
In parks, botanical gardens, and other open spaces, foreign and domestic invasive tree species are planted as green trees and ornamental trees. In this study, Using the Kobe Municipal Arboretum as a field, we examined the impact of non-native tree species on the surrounding vegetation and local environment. The occurrences of seedlings of non-native tree species were determined and the location of their mother trees were determined, resulting in the identification of 139 seedlings of non-native tree species in 19 species. Regarding the mode of seed dispersal, we found that 102 seedlings of 9 species were dispersed by animals, more than those dispersed by wind (41 seedlings of 9 species). It is important preventing the spread of non-native trees outside the park. Since it takes several years from seedling to flowering and fruiting, ensure proper management such as trimming every few years is necessary to prevent the spread of non-native tree species outside the park.
