Table 2: Depth profile distribution of pH, soil bulk density, TOC, TN, C/N, δ15N, δ13C and Clay proportion for four studied soil profiles from karst area in Yunnan-Guizhou Plateau of southwestern China.
Where (nd): means not determined.
| Soil profiles | Depth (cm) | pH | Density g/cm3 | TOC (%) | TN (%) | C/N | δ15N (‰) | δ13C (‰) | Clay (%) |
| SL1-1 | 5 | 5.99 | 1.14 | 0.286 | 0.05 | 5.7 | 11.718 | -16.831 | 8.02 |
| SL1-2 | 10 | 6.03 | 1.83 | 2.255 | 0.168 | 13.4 | 14.369 | -16.517 | 11.16 |
| SL1-3 | 15 | 6.09 | 1.75 | 2.051 | 0.154 | 13.3 | 10.523 | -16.008 | 12.37 |
| SL1-4 | 20 | 6.08 | 1.89 | 1.676 | 0.142 | 11.8 | 10.757 | -15.984 | 13.85 |
| SL1-5 | 25 | 6.02 | 1.32 | 1.764 | 0.132 | 13.4 | 11.335 | -16.204 | 15.88 |
| SL1-6 | 30 | 6.02 | 2.01 | 1.56 | 0.122 | 12.8 | 10.438 | -16.367 | 16.91 |
| SL1-7 | 35 | 6.06 | 2.04 | 1.372 | 0.113 | 12.1 | 11.138 | -16.219 | 19.66 |
| SL1-8 | 40 | 6.04 | 1.61 | 1.41 | 0.111 | 12.7 | 14.855 | -16.345 | 17.07 |
| SL1-9 | 45 | 6 | 1.74 | 1.157 | 0.102 | 11.3 | 10.977 | -16.683 | 12.75 |
| SL1-10 | 50 | 5.95 | 1.58 | 0.953 | 0.087 | 11 | 12.791 | -16.874 | 16.67 |
| SL1-0 | 100 | nd | nd | nd | nd | nd | nd | nd | nd |
| SL2-1 | 5 | 5.02 | 1.65 | 2.118 | 0.16 | 13.3 | 5.67 | -20.698 | 6.68 |
| SL2-2 | 17 | 5.07 | 1.16 | 0.729 | 0.072 | 10.2 | 6.128 | -18.345 | 9 |
| SL2-3 | 29 | 5.11 | 1.64 | 0.413 | 0.058 | 7.1 | 8.975 | -18.103 | 8.26 |
| SL2-4 | 41 | 5.22 | 1.76 | 0.351 | 0.051 | 6.9 | 9.074 | -18.34 | 7.76 |
| SL2-5 | 53 | 5.05 | 1.62 | 0.24 | 0.045 | 5.4 | 6.334 | -19.307 | 10.91 |
| SL2-6 | 65 | 5.09 | 1.68 | 0.153 | 0.037 | 4.2 | 9.676 | -20.001 | 10.65 |
| SL2-7 | 77 | 5.45 | 2.3 | 0.154 | 0.032 | 4.8 | 7.734 | -20.314 | 9.1 |
| SL2-8 | 89 | 5.58 | 1.42 | 0.158 | 0.038 | 4.1 | 9.415 | -21.001 | 9.72 |
| SL2-9 | 101 | 5.26 | 2.04 | 0.16 | 0.046 | 3.5 | 7.784 | -20.83 | 7.78 |
| SL2-10 | 113 | 5.17 | 1.83 | 0.145 | 0.043 | 3.3 | 6.821 | -21.696 | 7.59 |
| SL2-0 | 163 | nd | nd | nd | nd | nd | nd | nd | nd |
| XNC-1 | 5 | 5.01 | 1.52 | 0.942 | 0.089 | 10.6 | 5.192 | -20.268 | 7.24 |
| XNC-2 | 15 | 5.36 | 1.75 | 0.712 | 0.08 | 8.9 | 6.2 | -18.534 | 7.35 |
| XNC-3 | 25 | 5.44 | 1.59 | 0.799 | 0.081 | 9.8 | 13.22 | -15.642 | 8.14 |
| XNC-4 | 35 | 5.77 | 1.4 | 0.257 | 0.049 | 5.2 | 5.098 | -17.609 | 8.16 |
| XNC-5 | 45 | 5.93 | 1.78 | 0.286 | 0.049 | 5.8 | 7.221 | -16.573 | 7.91 |
| XNC-6 | 55 | 6.07 | 1.84 | 0.185 | 0.046 | 4 | 6.182 | -18.11 | 8.72 |
| XNC-7 | 75 | 6.07 | 1.55 | 0.121 | 0.044 | 2.7 | 2.779 | -21.626 | 8.67 |
| XNC-8 | 95 | 6.06 | 1.94 | 0.154 | 0.047 | 3.3 | 6.116 | -19.555 | 9.6 |
| XNC-9 | 135 | 6.08 | 1.91 | 0.189 | 0.103 | 1.8 | 8.052 | -21.894 | 7.8 |
| XNC-10 | 185 | 5.63 | 1.91 | 0.118 | 0.047 | 2.5 | 5.218 | -22.629 | 9.2 |
| XNC-11 | 245 | 5.54 | 2.11 | 0.058 | 0.038 | 1.5 | 4.88 | -25.824 | 4.12 |
| DP-1 | 5 | 4.285 | 1.29 | 0.919 | 0.089 | 10.4 | 4.95 | -21.181 | 39.5 |
| DP-2 | 15 | 4.18 | 1.13 | 0.288 | 0.061 | 4.7 | 6.113 | -21.837 | 36.72 |
| DP-3 | 25 | 4.23 | 1.81 | 0.217 | 0.061 | 3.6 | 3.271 | -22.533 | 40.93 |
| DP-4 | 35 | 4.27 | 1.93 | 0.179 | 0.058 | 3.1 | 6.679 | -23.047 | 41.25 |
| DP-5 | 45 | 4.16 | 1.95 | 0.189 | 0.056 | 3.4 | 4.195 | -23.162 | 40.58 |
| DP-6 | 55 | 4.235 | 1.86 | 0.189 | 0.053 | 3.5 | 4.091 | -24.439 | 41.76 |
| DP-7 | 65 | 4.055 | 1.64 | 0.177 | 0.065 | 2.7 | 6.992 | -24.29 | 50.63 |
| DP-8 | 75 | 4.26 | 1.64 | 0.184 | 0.063 | 2.9 | 6.757 | -24.754 | 31.77 |
| DP-9 | 85 | 4.24 | 1.25 | 0.143 | 0.067 | 2.1 | 7.497 | -23.437 | 36.6 |
| DP-10 | 95 | 4.285 | 2.06 | 0.126 | 0.056 | 2.2 | 4.494 | -23.64 | 26.28 |
| DP-11 | 105 | 4.365 | 2.08 | 0.15 | 0.05 | 3 | 2.982 | -24.434 | 28.23 |
| DP-12 | 115 | 5.16 | 2.07 | 0.286 | 0.05 | 5.7 | 4 | -23.561 | 25.3 |
| DP-0 | 145 | nd | nd | nd | nd | nd | nd | nd | nd |