Table 2.
Parameters (means ± standard deviation) of Kosugi’s hydraulic property model obtained by inverse estimation using HYDURS 1D
| Treatment | Depth cm | θs cm3 cm−3 | hm cm | σ − | Ks cm min−1 | R2 | SSQ |
|---|---|---|---|---|---|---|---|
| Initial drainage experiment (unplanted columns) | |||||||
| Unplanted ↳ No plant* | 0–30 | 0.46 (±0.02) | 90.1 (±19.7) | 2.17 (±0.10) | 1.22 (±0.44) | 0.93 | 0.39 |
| 30–60 | 0.46 (±0.01) | 296.9 (±42.3) | 2.47 (±0.04) | 0.97 (±0.34) | |||
| Unplanted ↳ Mustard | 0–30 | 0.42 (±0.01) | 142.4 (±26.3) | 1.78 (±0.06) | 0.28 (±0.10) | 0.94 | 0.82 |
| 30–60 | 0.48 (±0.01) | 142.2 (±6.9) | 2.33 (±0.15) | 23.97 (±11.91) | |||
| Unplanted ↳ Rye | 0–30 | 0.40 (±0.01) | 159.1 (±15.9) | 1.79 (±0.03) | 0.19 (±0.04) | 0.90 | 0.67 |
| 30–60 | 0.46 (±0.02) | 145.3 (±28.4) | 2.08 (±0.05) | 0.37 (±0.14) | |||
| Final drainage experiment (unplanted vs. planted columns) | |||||||
| No plant | 0–30 | 0.39 (±0.002) | 162.2 (±13.1) | 1.33 (±0.08) | 0.11 (±0.03) | 0.98 | 0.34 |
| 30–60 | 0.41 (±0.01) | 334.5 (±21.3) | 2.71 (±0.11) | 3.11 (±1.44) | |||
| Mustard | 0–30 | 0.43 (±0.01) | 207.3 (±18.2) | 2.85 (±0.03) | 21.46 (±5.27) | 0.97 | 0.46 |
| 30–60 | 0.40 (±0.002) | 432.4 (±31.5) | 3.42 (±0.07) | 28.68 (±7.92) | |||
| Rye | 0–30 | 0.41 (±0.002) | 230.4 (±28.6) | 2.43 (±0.23) | 29.35 (±9.29) | 0.98 | 0.42 |
| 30–60 | 0.40 (±0.01) | 474.1 (±34.4) | 3.13 (±0.14) | 26.24 (±9.12) | |||
*For the pre-planting initial drainage experiment ↳ indicates the subsequent treatment