Table 4 Physical properties of the soils sampled from Eniwa and Narita farms
Horizon | Depth (cm) | Three phase distribution (%) | Porosity (%) | Bulk densitya (Mg m−3) | SHCb (K20 cm−1) | |||
|---|---|---|---|---|---|---|---|---|
Solid | Liquid | Gaseous | Pma | Pmi | ||||
E-UF | ||||||||
 Ap | 0–5 | 31.4 | 34.0 | 34.6 | 15.1 | 53.5 | 0.85 ± 0.03 | 3.9 × 10−2 |
 A1 | 10–15 | 30.4 | 31.0 | 38.6 | 19.2 | 50.4 | 0.84 ± 0.02 | 8.3 × 10−2 |
 A2 | 30–35 | 29.8* | 31.9 | 38.3 | 19.1* | 51.1 | 0.83 ± 0.02* | 4.9 × 10−2* |
 2A3 | 50–55 | 13.1 | 54.6 | 32.3 | 13.6 | 73.3 | 0.37 ± 0.03* | 3.1 × 10−2 |
 3AB | 70–75 | 16.6 | 61.4 | 22.1 | 11.6 | 71.8 | 0.45 ± 0.01** | 6.0 × 10−3 |
E-CF | ||||||||
 Ap1 | 0–5 | 32.7 | 33.5 | 33.7 | 14.5 | 52.7 | 0.90 ± 0.03 | 5.7 × 10−2 |
 Ap2 | 12–17 | 29.9 | 31.9 | 38.2 | 18.4 | 51.7 | 0.84 ± 0.02 | 4.7 × 10−2 |
 Ap3 | 30–35 | 33.0* | 37.1 | 29.9 | 12.9* | 54.1 | 0.92 ± 0.03* | 1.6 × 10−2* |
 3AB | 50–55 | 14.0 | 61.9 | 24.1 | 11.2 | 74.8 | 0.43 ± 0.01* | 1.9 × 10−3 |
 4Bw | 70–75 | 20.7 | 59.8 | 19.4 | 10.5 | 68.7 | 0.55 ± 0.03** | 3.1 × 10−3 |
N-UF | ||||||||
 Ap | 0–5 | 27.8 | 18.8 | 53.4 | 17.4 | 54.8 | 0.72 ± 0.07 | 2.24 × 10−2 |
 A1 | 10–15 | 29.7* | 29.3 | 41.0 | 13.4 | 56.9 | 0.80 ± 0.10** | 3.15 × 10−2 |
 A2 | 30–35 | 23.7 | 48.1 | 28.3 | 10.7 | 65.7 | 0.70 ± 0.01** | 6.19 × 10−4** |
 AB | 50–55 | 18.0 | 53.5 | 28.5 | 11.7 | 70.3 | 0.55 ± 0.04 | 1.15 × 10−3 |
 Bw1 | 70–75 | 16.8** | 58.6 | 24.6 | 11.5 | 71.8 | 0.51 ± 0.004** | 5.78 × 10−4 |
N-CF | ||||||||
 Ap | 0–5 | 24.1 | 28.9 | 47.0 | 23.9 | 52.0 | 0.69 ± 0.02 | 2.29 × 10−2 |
 A1 | 20–25 | 41.1* | 42.0 | 16.9 | 8.5 | 50.4 | 1.09 ± 0.02** | 1.28 × 10−3 |
 A2 | 35–40 | 21.8 | 43.9 | 34.3 | 13.8 | 64.4 | 0.62 ± 0.02** | 2.98 × 10−3** |
 AB | 50–55 | 16.9 | 49.2 | 34.0 | 14.0 | 69.2 | 0.51 ± 0.01 | 1.94 × 10−3 |
 Bw | 70–75 | 15.1** | 52.2 | 32.7 | 12.6 | 72.3 | 0.47 ± 0.01** | 2.71 × 10−3 |