Site | Tree species | Treatment | Melich 3 extractable concentrations of heavy metals (mg·kg−1) | |||||||
pH | OM (%) | TN (mg·kg−1) | AP (mg·kg−1) | Cu | Co | Ni | Pb | |||
KTDS | E. grandis | UT | 3.73 ± 0.25 | 3.11 ± 1.08 | 0.14 ± 0.06 | 2.46 ± 0.40 | 14.32 ± 2.38 | 14.98 ± 2.89 | 3.90 ± 0.54 | 2.04 ± 0.12 |
|
| LS | 6.88 ± 0.91 | 2.94 ± 0.50 | 0.13 ± 0.04 | 17.31 ± 5.43 | 7.86 ± 1.52 | 4.68 ± 1.31 | 0.90 ± 0.35 | 1.58 ± 0.25 |
|
| Comp. | 5.67 ± 0.89 | 4.30 ± 0.67 | 0.23 ± 0.07 | 70.27 ± 18.43 | 8.76 ± ± 1.00 | 5.87 ± 1.16 | 1.54 ± 0.33 | 0.89 ± 0.10 |
|
| LS + Comp | 6.61 ± 0.83 | 3.92 ± 1.33 | 0.19 ± 0.06 | 42.71 ± 9.04 | 9.04 ± 1.85 | 3.40 ± 0.82 | 1.25 ± 0.47 | 0.53 ± 0.15 |
| Senna siamea | UT | 4.75 ± 0.82 | 3.97 ± 1.05 | 0.20 ± 0.09 | 10.74 ± 3.63 | 27.75 ± 3.31 | 15.22 ± 1.44 | 4.00 ± 0.47 | 2.53 ± 0.79 |
|
| LS | 7.43 ± 0.28 | 4.87 ± 1.06 | 0.25 ± 0.07 | 24.92 ± 6.41 | 9.91 ± 2.02 | 2.90 ± 0.29 | 1.17 ± 0.63 | 0.40 ± 0.09 |
|
| Comp. | 6.40 ± 0.72 | 6.27 ± 1.62 | 0.34 ± 0.11 | 89.67 ± 17.02 | 9.12 ± 0.99 | 6.30 ± 0.73 | 1.27 ± 0.51 | 0.16 ± 0.01 |
|
| LS + Comp | 7.16 ± 0.78 | 5.99 ± 0.62 | 0.31 ± 0.07 | 76.69 ± 10.27 | 9.11 ± 1.33 | 4.56 ± 1.17 | 2.29 ± 0.43 | 0.39 ± 0.16 |
| L. leucocephala | UT | 4.51 ± 0.39 | 3.14 ± 0.72 | 0.15 ± 0.01 | 1.79 ± 0.16 | 13.61 ± 4.60 | 15.65 ± 4.18 | 4.17 ± 0.52 | 1.09 ± 0.34 |
|
| LS | 7.83 ± 0.37 | 4.51 ± 1.09 | 0.20 ± 0.06 | 25.49 ± 11.72 | 6.22 ± 0.82 | 3.47 ± 1.04 | 2.64 ± 0.81 | 0.58 ± 0.12 |
|
| Comp. | 6.70 ± 1.17 | 5.84 ± 0.89 | 0.24 ± 0.07 | 204.00 ± 73.10 | 7.12 ± 1.96 | 1.47 ± 0.19 | 2.77 ± 0.95 | 0.63 ± 0.11 |
|
| LS + Comp | 7.56 ± 0.47 | 5.22 ± 0.97 | 0.22 ± 0.06 | 104.06 ± 32.17 | 9.26 ± 2.87 | 3.56 ± 0.055 | 2.26 ± 0.24 | 0.79 ± 0.19 |
LPPTS | E. grandis | UT | 2.96 ± 0.35 | 3.76 ± 0.84 | 0.14 ± 0.04 | 21.65 ± 5.98 | 15.02 ± 1.98 | 93.29 ± 17.48 | 10.09 ± 1.16 | 1.62 ± 0.32 |
|
| LS | 6.95 ± 0.76 | 3.22 ± 0.47 | 0.16 ± 0.03 | 30.18 ± 6.67 | 5.66 ± 1.27 | 44.70 ± 8.23 | 4.29 ± 1.56 | 0.54 ± 0.10 |
|
| Comp. | 4.33 ± 0.78 | 9.16 ± 1.19 | 0.33 ± 0.11 | 125.61 ± 27.16 | 6.43 ± 1.40 | 36.78 ± 3.12 | 5.57 ± 1.47 | 0.38 ± 0.12 |
|
| LS + Comp | 6.75 ± 0.68 | 5.25 ± 0.73 | 0.22 ± 0.06 | 63.97 ± 19.41 | 7.10 ± 1.57 | 35.67 ± 5.59 | 4.93 ± 1.15 | 0.37 ± 0.09 |
| Senna siamea | UT | 2.99 ± 0.56 | 5.15 ± 1.33 | 0.25 ± 0.08 | 26.28 ± 5.07 | 12.43 ± 1.35 | 88.48 ± 14.27 | 15.88 ± 2.33 | 1.62 ± 0.24 |
|
| LS | 6.92 ± 0.71 | 5.16 ± 1.79 | 0.26 ± 0.06 | 37.86 ± 12.43 | 6.95 ± 1.70 | 28.82 ± 5.75 | 3.69 ± 0.62 | 0.43 ± 0.10 |
|
| Comp. | 4.53 ± 0.36 | 9.18 ± 1.50 | 0.37 ± 0.14 | 139.38 ± 31.21 | 5.12 ± 1.93 | 53.10 ± 8.33 | 6.30 ± 1.65 | 0.69 ± 0.02 |
|
| LS + Comp | 6.50 ± 0.65 | 6.26 ± 1.77 | 0.27 ± 0.07 | 64.63 ± 17.54 | 7.68 ± 1.29 | 33.42 ± 2.48 | 2.64 ± 0.57 | 0.71 ± 0.21 |
| L. leucocephala | UT | 4.36 ± 0.89 | 1.36 ± 0.18 | 0.09 ± 0.02 | 5.02 ± 0.49 | 16.18 ± 3.53 | 49.70 ± 11.6 | 13.22 ± 3.49 | 1.75 ± 0.21 |
|
| LS | 7.58 ± 0.37 | 1.56 ± 0.30 | 0.09 ± 0.03 | 18.26 ± 3.54 | 7.20 ± 1.38 | 10.65 ± 1.11 | 6.29 ± 0.96 | 0.51 ± 0.10 |
|
| Comp. | 6.94 ± 1.13 | 4.31 ± 0.59 | 0.25 ± 0.07 | 157.76 ± 25.57 | 4.83 ± 0.98 | 9.21 ± 0.81 | 4.96 ± 1.61 | 0.42 ± 0.06 |
|
| LS + Comp | 7.57 ± 0.39 | 1.84 ± 0.15 | 0.21 ± 0.06 | 78.19 ± 10.34 | 6.22 ± 1.00 | 5.92 ± 0.66 | 6.40 ± 2.00 | 0.51 ± 0.13 |
HPPTS | E. grandis | UT | 3.26 ± 1.00 | 1.80 ± 0.19 | 0.11 ± 0.05 | 9.31 ± 2.92 | 37.65 ± 8.89 | 125.11 ± 25.01 | 29.20 ± 9.04 | 2.46 ± 1.09 |
|
| LS | 7.02 ± 0.33 | 1.89 ± 0.25 | 0.13 ± 0.04 | 38.04 ± 3.50 | 7.17 ± 1.01 | 36.78 ± 4.96 | 3.91 ± 1.86 | 1.13 ± 0.27 |
|
| Comp. | 6.83 ± 0.67 | 4.36 ± 0.80 | 0.17 ± 0.06 | 280.17 ± 51.66 | 5.83 ± 1.34 | 18.63 ± 1.39 | 7.82 ± 2.74 | 0.48 ± 0.13 |
|
| LS + Comp | 7.02 ± 0.55 | 3.77 ± 0.13 | 0.17 ± 0.05 | 172.75 ± 28.56 | 7.92 ± 1.69 | 21.81 ± 0.53 | 4.69 ± 1.62 | 0.75 ± 0.23 |
| Senna siamea | UT | 3.39 ± 1.22 | 1.50 ± 0.15 | 0.09 ± 0.01 | 12.29 ± 3.03 | 40.58 ± 7.58 | 107.89 ± 19.76 | 9.78 ± 3.08 | 1.26 ± 0.14 |
|
| LS | 7.37 ± 0.56 | 1.59 ± 0.18 | 0.21 ± 0.06 | 13.95 ± 3.25 | 14.76 ± 4.04 | 15.09 ± 4.96 | 2.80 ± 0.70 | 0.76 ± 0.17 |
|
| Comp. | 4.60 ± 1.21 | 4.01 ± 0.36 | 0.15 ± 0.04 | 127.88 ± 14.58 | 18.75 ± 1.80 | 31.62 ± 5.95 | 3.22 ± 0.96 | 0.81 ± 0.11 |
|
| LS + Comp | 7.30 ± 0.72 | 1.63 ± 0.14 | 0.13 ± 0.04 | 41.16 ± 8.42 | 11.84 ± 2.26 | 29.32 ± 8.77 | 3.66 ± 0.93 | 0.73 ± 0.16 |
| L. leucocephala | UT | 4.50 ± 0.81 | 1.57 ± 0.17 | 0.11 ± 0.02 | 20.13 ± 3.27 | 36.14 ± 6.92 | 72.19 ± 12.62 | 10.42 ± 0.66 | 1.36 ± 0.14 |
|
| LS | 7.70 ± 0.44 | 2.21 ± 0.31 | 0.13 ± 0.01 | 36.11 ± 5.17 | 6.94 ± 1.98 | 11.69 ± 2.46 | 2.53 ± 0.74 | 1.09 ± 0.27 |
|
| Comp. | 6.64 ± 0.81 | 4.42 ± 0.80 | 0.17 ± 0.03 | 125.56 ± 22.46 | 7.06 ± 1.06 | 11.19 ± 3.56 | 3.72 ± 1.01 | 0.63 ± 0.15 |
|
| LS + Comp | 7.55 ± 0.64 | 2.24 ± 0.37 | 0.14 ± 0.03 | 80.82 ± 16.97 | 10.35 ± 2.66 | 12.92 ± 2.79 | 2.58 ± 0.68 | 0.72 ± 0.19 |
Unpolluted | E. grandis |
| 6.24 ± 0.61 | 9.83 ± 1.93 | 0.39 ± 0.08 | 40.92 ± 4.45 | 4.25 ± 0.77 | 4.50 ± 0.96 | 2.5.71 ± 0.06 | 0.28 ± 0.03 |
| Senna siamea |
| 6.24 ± 0.56 | 9.04 ± 1.12 | 0.37 ± 0.04 | 42.70 ± 4.47 | 4.09 ± 0.42 | 4.65 ± 0.14 | 2.96 ± 0.01 | 0.15 ± 0.04 |
| L. leucocephala |
| 5.88 ± 0.49 | 9.84 ± 1.92 | 0.39 ± 0.09 | 50.69 ± 6.75 | 5.54 ± 0.66 | 5.04 ± 0.11 | 3.00 ± 0.19 | 0.18 ± 0.01 |