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Table 4 Spearman correlation analysis results of monthly mean surface water carbon variables and various water quality parameters

From: Carbon pool trends and dynamics within a subtropical peatland during long-term restoration

  Parameter WCA-1 WCA-2 WCA-3
Dissolved inorganic carbon Stage elevation 0.19 (0.14) − 0.25 (0.06) − 0.49 (< 0.01)
  Water temperature 0.06 (0.63) − 0.31 (<0.01) − 0.57 (< 0.01)
  Total phosphorus 0.39 (< 0.01) 0.34 (< 0.05) − 0.23 (0.07)
  Total nitrogen 0.62 (< 0.01) 0.65 (< 0.01) 0.59 (< 0.01)
  Specific conductance 0.74 (< 0.01) 0.67 (< 0.01) 0.65 (< 0.01)
Dissolved organic carbon Stage elevation 0.07 (0.61) − 0.33 (< 0.05) − 0.28 (< 0.05)
  Water temperature − 0.08 (0.52) − 0.14 (0.30) − 0.03 (0.79)
  Total phosphorus 0.25 (0.05) 0.38 (< 0.01) 0.009 (0.95)
  Total nitrogen 0.78 (< 0.01) 0.67 (< 0.01) 0.72 (< 0.01)
  Specific conductance 0.74 (< 0.01) 0.52 (< 0.01) 0.60 (< 0.01)
Particulate organic carbon Stage elevation − 0.23 (0.10) − 0.007 (0.96) 0.14 (0.28)
  Water temperature − 0.15 (0.26) − 0.12 (0.37) − 0.18 (0.18)
  Total phosphorus 0.08 (0.55) 0.40 (< 0.01) 0.37 (< 0.01)
  Total nitrogen 0.19 (0.16) 0.17 (0.23) − 0.11 (0.41)
  Specific conductance 0.30 (< 0.05) 0.04 (0.79) − 0.32 (< 0.05)
pCO2(aq) Stage elevation − 0.05 (0.20) 0.25 (0.06) 0.19 (0.14)
  Water temperature 0.25 (0.05) 0.35 (< 0.01) 0.21 (0.10)
  Total phosphorus 0.30 (< 0.05) 0.48 (< 0.01) 0.22 (0.09)
  Total nitrogen 0.22 (0.10) 0.08 (0.51) 0.09 (0.48)
  Specific conductance 0.12 (0.38) 0.02 (0.91) − 0.13 (0.31)
  1. Values are represented as Spearman’s rho (ρ value). Correlations that are not statistically significant are identified in italics