变量 | 差分阶数 | t | P | AIC | 临界值 | ||
1% | 5% | 10% | |||||
SOC土壤有机碳 | 0 | −3.967 | 0.002*** | 23.262 | −4.473 | −3.29 | −2.772 |
1 | −5.327 | 0.000*** | 22.286 | −4.665 | −3.367 | −2.803 | |
2 | −12.083 | 0.000*** | 21.646 | −5.354 | −3.646 | −2.901 |