Table 1 CO2 concentration in the steel cylinder and the actual CO2 concentration in the soil (μmol/mol)
CO2 concentration in the steel cylinder | 700 | 1,000 | 2,000 | 5,000 | 10,000 | 20,000 | 50,000 |
Actual CO2 concentration in the soil (mean ± SE) | 685 ± 430.891 | 856 ± 316.562 | 1,524 ± 304.371 | 3,172 ± 622.621 | 5,538 ± 693.676 | 6,260 ± 724.741 | 7,974 ± 894.483 |