Fig. S1 The scene of experimental plots after 8 yr fertilization.

Fig. S2 Principal component analysis of matrixes of N and P availability.

Fig. S3 Sampling effort curves for morphospecies and phylotypes of AM fungi.

Fig. S4 Bayesian phylogenetic tree of AM fungal sequences obtained in this study.

Table S1 Plant species composition in different fertilization treatments

Table S2 Plant nitrogen and phosphorus contents in different fertilization treatments

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