Table 2. The concentrations of formate, lactate, acetate, and propionate in pore water of sediments under various treatments.
| Time | Treatment | Formate (mg L−1) | Lactate (mg L−1) | Acetate (mg L−1) | Propionate (mg L−1) |
|---|---|---|---|---|---|
| 0 day | |||||
| Raw sediment | 4.64 ± 0.76 | 74.86 ± 12.51 | 33.19 ± 8.78 | 4.20 ± 0.34 | |
| 151 day | |||||
| control | 3.56 ± 0.21 | 54.19 ± 9.38 | 20.21 ± 5.43 | 3.89 ± 0.56 | |
| SMFC | 0.43 ± 0.03 | 40.21 ± 10.21 | 10.03 ± 3.92 | 4.01 ± 0.03 | |
| macrophyte | 5.87 ± 1.24 | 43.67 ± 8.05 | 38.25 ± 10.01 | 3.56 ± 0.28 | |
| macrophyte-SMFC | 4.02 ± 0.52 | 32.84 ± 6.32 | 28.43 ± 8.43 | 2.59 ± 0.73 | |
| 367 day | |||||
| control | NDa | 15.55 ± 6.21 | 10.36±4.02 | ND | |
| SMFC | ND | 19.31 ± 3.19 | ND | ND | |
| macrophyte | ND | 16.86 ± 4.02 | 14.12 ± 2.06 | ND | |
| macrophyte-SMFC | ND | 13.61 ± 6.03 | 7.49 ± 1.04 | ND |
Data are means ± standard deviation
aND, not detected, below the detection limit