Primary Research on Exotic Plants in Changchun Area

This article investigated exotic plants in Changchun area,and listed the names of exotic species.There were 46 species belonging to 20 classes,of which 30.4% were compositae plants.It also analyzed the origins of exotic plants in Changchun area,and the results showed that 50% of these plants came from America.The results and data could provide scientific basis for standard management and risk assessments of ecological invasion of exotic species.