Table 1 The relationships of microbial community functional structure to plant and soil characteristics by RDA and VPA a
From: Elevated CO2 influences microbial carbon and nitrogen cycling
| Â | Â | All genes detected | C cycling genes | N cycling genes |
|---|---|---|---|---|
With nine selected variables | First axis explanation (%) | 19.1 | 20.3 | 19.6 |
| Â | Total explanation (%) | 42.2 | 42.8 | 42.8 |
| Â | F | 1.138 | 1.167 | 1.163 |
| Â | p | 0.098 | 0.072 | 0.087 |
Explanations of the selected plant variables (%) | Total | 24.7 | 24.6 | 25.1 |
| Â | The number of plant functional groups (PFG) | 5.9 | 4.5 | 5.1 |
| Â | Belowground plant C percentage (BPC) | 4.4 | 4.5 | 4.5 |
| Â | Biomass of C4 plant species Andropogon gerardi (BAG) | 4.4 | 3.7 | 4.5 |
| Â | Biomass of C4 plant species Bouteloua gracilis (BBG) | 3.7 | 4.5 | 3.8 |
| Â | Biomass of legume plant species Lupinus perennis (BLP) | 6.0 | 6.0 | 6.4 |
Explanations of the selected soil variables (%) | Total | 19.4 | 19.0 | 19.7 |
| Â | Soil N% at the depth of 0-10Â cm (SN0-10) | 5.7 | 5.2 | 4.5 |
| Â | Soil N% at the depth of 10-20Â cm (SN10-20) | 4.4 | 4.5 | 5.1 |
|  | Soil C and N ratio at the depth of 10–20 cm (SCNR10-20) | 4.4 | 4.5 | 3.8 |
| Â | pH | 4.4 | 5.2 | 5.1 |