From: Canopy gap impacts on soil organic carbon and nutrient dynamic: a meta-analysis
 | Sample size (n) | Fail-safe N |  | Sample size(n) | Fail-safe N |
---|---|---|---|---|---|
pH | 192 | 2596 | NO3− | 178 | 233,147 |
Soil M | 199 | 18,852 | Available P | 100 | 389,209 |
Soil T | 117 | 35,450 | Hy-EEAs | 87 | 1992 |
Corg | 303 | 5042 | Ox-EEAs | 23 | 427 |
Nt | 238 | 23,171 | Cmic | 128 | 638 |
Pt | 96 | 3052 | Nmic | 58 | 667 |
C:N | 147 | 1553 | Pmic | 68 | 1590 |
NH4+ | 179 | 83,308 | Cmic:Nmic | 22 | 0* |