Table 2.
Statistical table of physical and chemical properties, enzyme activities, and allelochemicals in rhizosphere soil.
| Name | No Invasion | Primary Invasion | Moderate Invasion | Severe Invasion |
|---|---|---|---|---|
| pH | 7.46 ± 0.01 b | 7.60 ± 0.01 a | 7.60 ± 0.02 a | 7.61 ± 0.01 a |
| At (m) | 2968 ± 2.50 a | 2930 ± 14.72 b | 2935 ± 6.45 b | 2958 ± 4.79 a |
| ST (°C) | 4.80 ± 0.15 a | 4.93 ± 0.09 a | 5.03 ± 0.09 a | 5.17 ± 0.09 a |
| SH (%) | 39.39 ± 2.56 a | 30.48 ± 0.34 b | 29.63 ± 0.18 b | 29.18 ± 0.37 b |
| SOM (g/kg) | 131.41 ± 0.94 b | 113.83 ± 0.29 c | 132.11 ± 0.52 b | 135.45 ± 0.85 a |
| TN (g/kg) | 6.83 ± 0.04 c | 8.24 ± 0.01 a | 6.66 ± 0.01 d | 7.45 ± 0.01 b |
| AN (mg/kg) | 586.23 ± 0.96 c | 690.35 ± 2.56 a | 582.06 ± 1.91 c | 634.12 ± 2.74 b |
| AK (mg/kg) | 255.4 ± 0.68 c | 368.1 ± 1.36 a | 223.42 ± 1.99 d | 310.28 ± 1.88 b |
| AP (mg/kg) | 38.4 ± 0.21 d | 58.94 ± 0.17 a | 49.97 ± 0.41 c | 56.91 ± 0.23 b |
| PPO (mg/d/g) | 13.53 ± 0.12 c | 13.74 ± 0.12 c | 16.03 ± 0.10 b | 17.61 ± 0.05 a |
| POD (mg/d/g) | 30.44 ± 0.17 c | 45.59 ± 0.26 b | 35.79 ± 0.06 a | 35.59 ± 0.46 b |
| UE (μg/d/g) | 860.93 ± 1.41 a | 756.62 ± 0.29 c | 758.08 ± 0.41 c | 776.10 ± 0.48 b |
| DHA (μg/d/g) | 6.09 ± 0.08 d | 23.03 ± 0.16 a | 10.85 ± 0.13 c | 17.33 ± 0.15 b |
| SC (mg/d/g) | 62.81 ± 0.17 a | 59.79 ± 0.16 d | 61.56 ± 0.13 b | 60.74 ± 0.31 c |
| AKP (umol/d/g) | 8.11 ± 0.13 a | 4.25 ± 0.06 b | 4.55 ± 0.06 b | 4.41 ± 0.14 b |
| ACP (umol/d/g) | 15.63 ± 0.10 a | 13.99 ± 0.10 b | 12.99 ± 0.20 c | 14.45 ± 0.15 b |
| SYT (mg/kg) | -- | 7.79 ± 0.06 b | 8.74 ± 0.08 a | 6.93 ± 0.02 c |
| YA (mg/kg) | -- | 3.24 ± 0.06 c | 7.69 ± 0.07 a | 3.75 ± 0.01 b |
| XB (mg/kg) | -- | 12.78 ± 0.13 a | 11.21 ± 0.09 b | 9.69 ± 0.05 c |
| QB (mg/kg) | -- | 5.10 ± 0.04 b | 8.52 ± 0.10 a | 5.32 ± 0.01 c |
| JA (mg/kg) | -- | 11.31 ± 0.10 c | 26.28 ± 0.20 a | 15.62 ± 0.09 b |
Note: pH, hydrogen ion concentration; At, altitude; ST, soil temperature; SH, soil humidity; SOM, soil organic matter; TN, total nitrogen; AN, alkali-hydrolyzable nitrogen; AK, available potassium; AP, available phosphorous; PPO, polyphenol oxidase; POD, peroxidase; UE, urease; DHA, dehydrogenases; SC, sucrase; ALP, alkaline phosphatase; ACP, acid phosphatase; SYT, chamaechromone; YA, mesoneochamaejasmin A; XB, neochamaejasmin B; QB, dihydrodaphnodorin B; JA, 7-methoxyneochamaejasmine A. a, b, c, d, significant difference.