Table 3.
The relationship of detected functional genes involved in carbon cycling by GeoChip 4.0 and individual environmental variables
| Environmental variable | rMa | Pb |
|---|---|---|
| pH | 0.130 | 0.407 |
| Water content | 0.204 | 0.251 |
| C-relatedc | ||
| TOC | 0.197 | 0.318 |
| HLOC | 0.448 | 0.046 |
| MLOC | 0.099 | 0.409 |
| LOC | 0.194 | 0.312 |
| RO-C | 0.238 | 0.313 |
| MBC | 0.580 | 0.050 |
a
Mantel statistic. The signal intensities of carbon cycling genes for warmed and control soil samples were used as the first matrix; the normalized environmental variables were used as the second matrix.
b
Significant P values (<0.05) are in bold.
c
TOC, total organic carbon; HLOC, highly labile organic carbon; MLOC, mid-labile organic carbon; LOC, labile organic carbon; RO-C, recalcitrant organic carbon; MBC, soil microbial biomass carbon.