Treatment: added CO2 (df = 1) | |||||||
AIR | ±S.E. | CO2 | ±S.E. | %CO2 | F-value | P-value | |
DOC | 36.15 | 2.303 | 34.046 | 1.577 | - | 0.57 | n.s. |
Total N | 0.824 | 0.031 | 0.74 | 0.074 | - | 1.09 | n.s. |
DIN | 0.072 | 0.009 | 0.12 | 0.01 | 67 | 12.52 | 0.01 |
| 0.066 | 0.01 | 0.12 | 0.021 | 82 | 5.54 | 0.05 |
| 0.098 | 0.01 | 0.126 | 0.047 | - | 0.33 | n.s. |
P | 0.031 | 0.004 | 0.02 | 0.009 | −36 | 4.90 | 0.06 |
Cl− | 1.096 | 0.019 | 1.152 | 0.087 | - | 0.40 | n.s. |
| 1.1 | 0.156 | 0.938 | 0.166 | - | 0.51 | n.s. |
Ca2+ | 2.33 | 0.256 | 2.312 | 0.366 | - | 0.00 | n.s. |
Mg2+ | 0.226 | 0.012 | 0.214 | 0.046 | - | 0.07 | n.s. |
Na+ | 0.58 | 0.018 | 0.612 | 0.082 | - | 0.15 | n.s. |
K+ | 0.765 | 0.145 | 0.441 | 0.105 | −42 | 6.34 | 0.05 |
Fe3+ | 0.666 | 0.221 | 0.688 | 0.135 | - | 0.02 | n.s. |
Al3+ | 0.088 | 0.012 | 0.136 | 0.012 | 55 | 8.23 | 0.02 |
pH | 5.15 | 0.133 | 5.55 | 0.154 | 8 | 19.40 | 0.01 |