| 层位 | w(TOC)/% | w(S1 + S2)/(mg∙g−1) |
| B | 0.01~11.97/1.63 (199) | 0.01~103.1/10.28 (181) |
| R | 0.03~14.74/1.68 (456) | 0.05~131.78/9.51 (448) |
| K | 0.14~19.3/1.82 (2152) | 0.04~172.36/8.04 (2124) |
| M | 0.26~14.0/1.78 (440) | 0.41~121.75/8.45 (440) |
| P | 0.28~16.80/1.98 (556) | 0.57~180.9/9.56 (556) |