Fig. 1 Differences in richness, total coverage, and the importance values (IVs) of the shared species and unique species between the P. kansuensis invaded (P.K .) and non-invaded (CK) sites. The red line in the box diagram is the mean. Significant differences are reported from one-way analysis of variance as ns, P≥0.05; *P < 0.05; **P < 0.01.