Table 2. Pearson correlations between the ordination score of the first axis of the nonmetric dimensional scaling ordination (which explains 73% of the variance in the original data) and key soil and site characteristics.
| Variable | r | r2 |
|---|---|---|
| Vegetation type | -0.62 | 0.38 |
| MAT | 0.09 | 0.01 |
| SMD | 0.73 | 0.54 |
| Organic C, % | -0.51 | 0.26 |
| C:N ratio | -0.50 | 0.25 |
| Silt + clay, % | -0.04 | 0.01 |
| pH | 0.91 | 0.83 |
| CMR | -0.44 | 0.20 |
Vegetation type is a binary variable (forest/nonforest). SMD, soil moisture deficit; CMR, potential C mineralization rate.