Figure 1 Degrees of EAB infestation for different species of ash trees in China. Bars with different lowercase letters indicate significant differences (Tukey test, P < 0.05), while the numbers above the bars represent the number of sample plots in which each ash species presented. The level of EAB infestation were graded on a scale of 0-4 according to the percentage of ash trees infested with EAB (0 = undamaged; 1 = slightly damaged, with less than 10% of trees infested; 2 = moderately damaged, with 10%-50% of trees infested; 3 = seriously damaged, with 50%-90% of trees infested; 4 = very seriously extremely damaged, with over 90% of trees infested). EAB was not detected in other native ash species including F. angustifolia syriaca ,F. baroniana , F. bungeana , F. griffithii , F. hubeiensis and F. platypoda . These six ash species were combined as other native species for one-way ANOVA analysis since there was only one site for each species. The minimum ordinate value was set as -1 to highlight the degree of infestation level 0.