Table 1. Soil chemical characteristics in different plantations.
| Site | pH | TOC (g·kg−1) | C/N ratio | TN (g·kg−1) | TP (g·kg−1) | TK (g·kg−1) | NH4 + (g·kg−1) | NO3 - (g·kg−1) | AP (g·kg−1) | AK (g·kg−1) |
|---|---|---|---|---|---|---|---|---|---|---|
| SS a | 7.72d b (0.09) c | 11.93b (1.72) | 10.55b (0.96) | 1.13b (0.10) | 0.38b (0.04) | 12.74b (0.86) | 4.77b (0.39) | 1.03c (0.13) | 9.27b (0.19) | 102.03b (5.00) |
| SY | 8.14b (0.04) | 24.70a (2.88) | 16.32a (3.80) | 1.54a (0.19) | 0.72a (0.14) | 16.76a (0.35) | 8.66a (0.45) | 1.42b (0.16) | 15.27a (0.15) | 139.12a (3.73) |
| SB | 8.27a (0.07) | 22.07a (1.66) | 14.88ab (2.65) | 1.50a (0.16) | 0.73a (0.10) | 16.34a (1.32) | 7.41a (0.61) | 1.92a (0.06) | 15.60a (0.14) | 126.35a (4.27) |
| SC | 7.99c (0.04) | 15.70b (1.55) | 14.13ab (3.21) | 1.14b (0.20) | 0.71a (0.07) | 16.21a (0.80) | 4.91b (0.85) | 1.33b (0.09) | 14.44a (0.06) | 108.71b (6.14) |
a SS: pure Hippophae rhamnoides plantation; SY: mixed plantation with Hippophae rhamnoides and Pinus tabulaeformis; SB: mixed plantation with Hippophae rhamnoides and Platycladus orientalis; SC: mixed plantation with Hippophae rhamnoides and Robinia pseucdoacacia.
b Different letters in the columns indicate significant differences at p < 0.05 levels via the LSD test.
c Standard deviation.