Table 1. Soil characteristics under four different vegetation types.
| PTAU | PTRP | PT | PTVN | df | F | P | |
|---|---|---|---|---|---|---|---|
| pH | 7.71 ± 0.07aA | 7.64 ± 0.20aA | 6.75 ± 0.17cC | 7.20 ± 0.04bB | 3 | 43.38 | 0.00 |
| TC(g/kg) | 20.10 ± 2.65aA | 14.80 ± 1.78bB | 13.17 ± 1.74bB | 13.56 ± 2.64bB | 3 | 8.152 | 0.00 |
| TN(g/kg) | 1.48 ± 0.37aA | 1.45 ± 0.09aA | 0.90 ± 0.14bB | 1.26 ± 0.20aAB | 3 | 5.722 | 0.01 |
| C/N | 13.92 ± 1.80aA | 10.18 ± 0.87bB | 14.76 ± 0.35aA | 10.77 ± 0.52bB | 3 | 18.76 | 0.00 |
| TP(g/kg) | 0.41 ± 0.08aAB | 0.48 ± 0.03aA | 0.33 ± 0.03bBC | 0.26 ± 0.02bC | 3 | 16.34 | 0.00 |
| AN(mg/kg) | 108.38 ± 25.08aA | 101.80 ± 10.21a | 62.38 ± 12.95bB | 95.20 ± 16.56aAB | 3 | 5.68 | 0.01 |
| AP(mg/kg) | 3.60 ± 0.83aA | 3.23 ± 0.46aA | 3.38 ± 0.46aA | 2.93 ± 0.47aA | 3 | 0.96 | 0.44 |
| AK(mg/kg) | 102.80 ± 22.85a | 100.20 ± 20.23aAB | 65.23 ± 14.06bB | 79.18 ± 4.00abAB | 3 | 4.47 | 0.03 |
Notes.
Data are means ± standard deviation (n = 4).
- TC
- total carbon
- TN
- total nitrogen
- TP
- total phosphorus
- AN
- available nitrogen
- AP
- available phosphorus
- AK
- available potassium
- PT
- Pinus tabuliformis
- PTAU
- Pinus tabuliformis-Armeniaca vulgaris mixed forest
- PTRP
- Pinus tabuliformis-Robinia pseudoacacia mixed forest
- PTVN
- Pinus tabuliformis-Vitex negundo L. var. heterophylla mixed forest
Different uppercase letters in the same row indicate significant difference at the 0.01 level, and different lowercase letters in the same row indicate significant differences at the 0.05 level.