| 指标 Index | 土壤碳素 Soil carbon content | 土壤氮素 Soil nitrogen content | 土壤磷素 Soil phosphorus content | 土壤钾素 Soil potassium content | |||||||
| SOC | TC | -N | -N | AN | TN | C/N | AP | TP | AK | TK | |
| SOC | 1 |
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| TC | 0.992** | 1 |
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| -N | 0.913** | 0.949** | 1 |
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| -N | 0.148 | 0.185 | 0.254 | 1 |
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| AN | 0.893** | 0.933** | 0.991** | 0.382 | 1 |
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| TN | 0.989** | 0.999** | 0.955** | 0.174 | 0.937** | 1 |
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| C/N | 0.894** | 0.834** | 0.642* | 0.052 | 0.621* | 0.820** | 1 |
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| AP | 0.238 | 0.211 | 0.171 | −0.14 | 0.144 | 0.215 | 0.27 | 1 |
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| TP | 0.780** | 0.788** | 0.844** | 0.406 | 0.863** | 0.782** | 0.622* | 0.206 | 1 |
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| AK | 0.473 | 0.376 | 0.079 | −0.184 | 0.05 | 0.358 | 0.792** | 0.336 | 0.114 | 1 |
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| TK | −0.09 | −0.14 | −0.319 | 0.21 | −0.275 | −0.158 | 0.163 | 0.258 | −0.166 | 0.467 | 1 |