From: Organic phosphorus leaching risk from agricultural soils across China
Soils | TFe (mg kg−1) | Tal (mg kg−1) | WFe (mg kg−1) | Wal (mg kg−1) | Fefr (mg kg−1) | Alfr (mg kg−1) | Fear (mg kg−1) | Alar (mg kg−1) | Feco (mg kg−1) | Alco (mg kg−1) |
---|---|---|---|---|---|---|---|---|---|---|
Total soils (n = 63) | ||||||||||
 Min | 0.20 | 0.37 | 0.01 | 0.02 | 2.07 | 0.34 | 0.47 | 0.52 | 0.02 | 0.01 |
 Max | 57.7 | 8.72 | 10.7 | 15.5 | 40.3 | 7.73 | 8.70 | 2.72 | 8.48 | 3.42 |
 Mean | 24.8 | 3.73 | 1.10 | 1.36 | 11.8 | 2.07 | 3.36 | 1.51 | 1.11 | 0.69 |
 SD | 10.1 | 2.32 | 2.10 | 2.84 | 8.63 | 1.68 | 1.65 | 0.50 | 1.58 | 0.79 |
Paddy soils (n = 21) | ||||||||||
 Min | 9.55 | 0.58 | 0.02 | 0.02 | 2.07 | 0.34 | 0.86 | 0.52 | 0.09 | 0.06 |
 Max | 56.3 | 7.89 | 7.69 | 15.5 | 26.0 | 4.63 | 6.85 | 1.51 | 2.45 | 1.33 |
 Mean | 27.1a | 3.55b | 1.57a | 2.40a | 10.4a | 1.66b | 3.30b | 1.16b | 0.97b | 0.56b |
 SD | 9.26 | 2.47 | 2.56 | 4.34 | 6.92 | 1.31 | 1.43 | 0.27 | 0.67 | 0.36 |
Red soils (n = 11) | ||||||||||
 Min | 0.20 | 0.37 | 0.01 | 0.02 | 3.27 | 0.71 | 2.67 | 1.12 | 0.50 | 0.38 |
 Max | 25.9 | 6.78 | 10.7 | 8.20 | 40.3 | 6.35 | 8.70 | 2.72 | 8.48 | 3.42 |
 Mean | 15.9b | 2.82b | 1.13a | 0.91a | 11.2a | 1.78ab | 4.59a | 1.90a | 3.06a | 1.73a |
 SD | 8.29 | 1.93 | 3.19 | 2.42 | 10.6 | 1.59 | 1.83 | 0.52 | 2.79 | 1.22 |
Chernozem (n = 13) | ||||||||||
 Min | 16.6 | 0.53 | 0.15 | 0.12 | 6.03 | 0.93 | 2.14 | 1.19 | 0.02 | 0.01 |
 Max | 36.3 | 7.35 | 2.32 | 3.13 | 35.1 | 7.73 | 6.64 | 2.41 | 2.88 | 1.76 |
 Mean | 26.9a | 2.86b | 0.83a | 1.00a | 14.5a | 3.10a | 4.01ab | 1.85a | 0.90b | 0.68b |
 SD | 6.69 | 2.23 | 0.71 | 1.15 | 11.0 | 2.41 | 1.67 | 0.38 | 0.97 | 0.61 |
Other soils (n = 18) | ||||||||||
 Min | 1.68 | 2.33 | 0.01 | 0.03 | 4.70 | 0.70 | 0.47 | 0.54 | 0.03 | 0.02 |
 Max | 57.7 | 8.72 | 5.58 | 3.08 | 32.7 | 5.16 | 3.89 | 2.29 | 0.73 | 0.52 |
 Mean | 26.2a | 5.12a | 0.74a | 0.67a | 11.6a | 1.95ab | 2.21c | 1.42b | 0.22b | 0.21c |
 SD | 11.7 | 1.91 | 1.27 | 0.87 | 7.36 | 1.24 | 0.94 | 0.47 | 0.17 | 0.17 |