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Table 2 Soil properties of the upper 30-cm in different forests

From: Reduced turnover rate of topsoil organic carbon in old-growth forests: a case study in subtropical China

Forest PF MF BF
SOC (g·kg− 1) 10.52 ± 0.39b 18.82 ± 1.09a 18.29 ± 0.61a
ROC (g·kg− 1) 3.29 ± 0.14b 5.37 ± 0.41a 4.83 ± 0.25a
RI (%) 71.06 ± 0.45b 72.62 ± 1.22ab 75.10 ± 0.51a
MBC (mg·kg− 1) 142.40 ± 7.73b 247.73 ± 27.40a 236.94 ± 22.74a
TN (g·kg− 1) 0.83 ± 0.02b 1.34 ± 0.06a 1.48 ± 0.05a
AN (mg·kg− 1) 65.80 ± 3.83c 132.07 ± 4.64b 154.03 ± 5.55a
C/N 11.87 ± 0.23b 13.28 ± 0.23a 12.05 ± 0.11b
SWC (%) 15.86 ± 0.52b 24.06 ± 0.97a 25.10 ± 0.58a
pH 4.05 ± 0.01a 3.95 ± 0.03b 3.91 ± 0.02b
MWD (mm) 172.96 ± 19.02b 321.30 ± 17.79a 256.39 ± 22.52a
BD (g·cm− 3) 1.45 ± 0.06a 1.23 ± 0.03b 1.21 ± 0.04b
  1. Values are the mean ± standard error (n = 8; for the BD, n = 3). PF P. massoniana forest; MF coniferous and broadleaved mixed forest; BF monsoon evergreen broadleaved forest; SOC soil organic carbon; ROC readily oxidized organic carbon; RI recalcitrance index; MBC microbial biomass carbon; TN total nitrogen; AN available nitrogen; C/N the ratio of carbon to nitrogen; SWC soil water content; MWD mean weight diameter of soil aggregates; BD bulk density. Different lowercase letters indicate significant differences among different forests (p < 0.05)