Table 1.
Comparison of the vegetation layers. Mean values of the species richness and Shannon diversity index relative to the A. altissima and native forests for the tree, shrub, and herbaceous layers. Results from the ANOVA test between the two groups and the significance level is given. Significant values are in bold.
| Ailanthus Forests | Native Forests | Ailanthus Vs. Native | |||
|---|---|---|---|---|---|
| Mean | Mean | Mean sq | p-Value | ||
| Species richness | tree layer | 2.42 | 2.95 | 2.63 | 0.18 |
| Species richness | shrub layer | 7.16 | 8.84 | 13.92 | 0.25 |
| Species richness | herb-layer | 8.16 | 7.74 | 50.95 | 0.05 |
| Shannon index | tree layer | 0.68 | 0.89 | 0.41 | 0.18 |
| Shannon index | shrub layer | 1.81 | 2.00 | 0.34 | 0.19 |
| Shannon index | herb-layer | 2.13 | 1.91 | 0.45 | 0.16 |