Table 2. Results (F-value) of three-way factorial ANOVA on effects of elevated temperature (T), N addition (N) and arbuscular mycorrhizal fungi (AMF) on plant species composition and productivity.
| Source of variance | Species diversity (H) | Species richness (R) | Species evenness (E) | Total aboveground biomass |
|---|---|---|---|---|
| T | 12.80** | 11.31** | 3.476NS | 85.23*** |
| N | 13.75** | 3.21NS | 2.68NS | 92.87*** |
| AMF | 7.65* | 2.05NS | 6.48* | 192.89*** |
| T × N | 3.22NS | 5.77* | 1.01NS | 24.56*** |
| T × AMF | 5.03* | 3.07NS | 5.23* | 11.75** |
| N × AMF | 6.21* | 6.55* | 6.97* | 46.91*** |
| T × N × AMF | 2.61NS | 1.23NS | 3.45NS | 16.52*** |
*Significant difference at P < 0.05; **significant difference at P < 0.01; ***significant difference at P < 0.001; NS no significant difference.