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.