Table 1 Soil biogeochemical properties in different sites.
Soil biogeochemical properties | Mud | KO | AM | SA |
|---|---|---|---|---|
pH | 7.34ā±ā0.04 ab | 7.23ā±ā0.11 ab | 7.50ā±ā0.02 a | 7.04ā±ā0.11 b |
Salinity | 9.27ā±ā0.02 b | 10.63ā±ā0.83 b | 11.77ā±ā0.74 b | 14.53ā±ā0.15 a |
EC (ms/cm) | 1.70ā±ā0.07 b | 1.98ā±ā0.24 ab | 2.33ā±ā0.25 ab | 2.64ā±ā0.05 a |
Water content (%) | 39.39ā±ā0.19 c | 43.69ā±ā1.28 bc | 44.78ā±ā0.53 b | 50.47ā±ā1.30 a |
TC (mg/g DW) | 9.31ā±ā1.78 b | 12.57ā±ā0.38 ab | 14.53ā±ā0.81 a | 12.20ā±ā0.15 ab |
TOC (mg/g DW) | 8.63ā±ā0.15 b | 10.72ā±ā0.12 a | 10.94ā±ā0.88 a | 10.48ā±ā0.11 a |
CN ratio | 9.03ā±ā0.30 b | 10.60ā±ā0.27 ab | 11.47ā±ā0.81 a | 9.90ā±ā0.07 ab |
Organic matter content (%) | 14.81ā±ā0.56 b | 16.26ā±ā0.85 ab | 18.96ā±ā0.88 a | 18.12ā±ā0.15 a |
MBC (mg/kg DW) | 59.80ā±ā24.92 c | 189.18ā±ā43.63 bc | 221.65ā±ā21.30 ab | 356.17ā±ā37.63 a |
SO42ā concentration (mg/L) | 843.18ā±ā32.54 a | 657.87ā±ā24.30 a | 423.17ā±ā19.59 b | 332.53ā±ā10.89 b |
NH4+ concentration (µg/g DW) | 14.86ā±ā0.24 a | 15.12ā±ā1.79 a | 17.13ā±ā1.99 a | 16.52ā±ā0.08 a |
NO3ā concentration (µg/g DW) | 1.48ā±ā0.13 a | 1.19ā±ā0.02 a | 1.08ā±ā0.08 a | 1.40ā±ā0.10 a |
NO2ā concentration (µg/g DW) | 0.02ā±ā0.01 a | 0.01ā±ā0.01 a | 0.01ā±ā0.01 a | 0.01ā±ā0.01 a |
Invertase activity (mg/d/g DW) | 1.12ā±ā0.10 b | 1.44ā±ā0.19 b | 2.56ā±ā0.15 b | 5.05ā±ā0.88 a |
β-glucosidase activity (mg/d/g DW) | 1.53ā±ā0.70 a | 2.35ā±ā0.18 a | 2.54ā±ā0.22 a | 3.69ā±ā0.75 a |