Table 2 The concentrations of soil total, labile, and recalcitrant organic C and N (mean ± SE, n = 12) in different land use types in the Jiangsu coast of eastern China.
Land use types | Soil organic carbon pool | Soil organic nitrogen pool | ||||
---|---|---|---|---|---|---|
SOC (g kg−1) | SLOC (g kg−1) | SROC (g kg−1) | SON (g kg−1) | SLON (g kg−1) | SRON (g kg−1) | |
Phragmites australis salt marsh | 3.43 ± 0.33d | 1.77 ± 0.28c | 1.66 ± 0.09d | 0.239 ± 0.018d | 0.128 ± 0.016d | 0.111 ± 0.004d |
Fishpond | 15.07 ± 0.36a | 4.89 ± 0.46a | 10.18 ± 0.21a | 1.403 ± 0.047a | 0.983 ± 0.050a | 0.420 ± 0.005a |
Wheat field | 9.50 ± 0.24b | 4.70 ± 0.24a | 4.80 ± 0.12b | 0.967 ± 0.021b | 0.692 ± 0.024b | 0.275 ± 0.010b |
Rapeseed field | 6.90 ± 0.29c | 3.02 ± 0.17b | 3.88 ± 0.19c | 0.682 ± 0.022c | 0.497 ± 0.028c | 0.185 ± 0.017c |
Town construction land | 1.86 ± 0.23e | 0.82 ± 0.13d | 1.04 ± 0.10e | 0.219 ± 0.029d | 0.191 ± 0.023d | 0.028 ± 0.008e |
Source of variation | ||||||
Coastal reclamation | *** | *** | *** | *** | *** | *** |