Abstract: Based on the distribution records of Flaveria bidentis in China, and by using five ecological niche models (GARP, Maxent, ENFA, Bioclim, and Domain), 32 eco-geographical variables were chosen to simulate the potential suitable distribution area of F. bidentis in the country, and the simulation precision of the models was assessed by the method of Receiver Operating Characteristic (ROC) curve analysis. Among the models adopted, Maxent model had the best simulation precision. Its prediction showed that the potential suitable distribution area of F. bidenti in this country accounted for 7.5% of the total, with the central and southern Hebei, Beijing, Tianjin, Henan, Shandong, Anhui, and Jiangsu having high potential invasion risk.

Key words: Flaveria bidentis, potential suitable distribution area, niche, lateral root branch, adjacent upper straight root, anti-fracture characteristics.