Table 1. Descriptive statistics of all the soil indicators collected from four depths under three soil types used to estimate SQI.
| Ko | ||||||||
| 0–10 cm | 10–20 cm | 20–40 cm | 40–60 cm | |||||
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | |
| pH | 6.0 | 0.5 | 6.2 | 0.6 | 6.4 | 0.6 | 6.4 | 0.6 |
| EC (µs cm−1) | 190.6 | 151.1 | 165.6 | 84.2 | 151.7 | 71.8 | 175.9 | 92.2 |
| BD (Mg m−3) | 1.4 | 0.2 | 1.5 | 0.1 | 1.6 | 0.1 | 1.6 | 0.1 |
| WSA % | 73.1 | 14.8 | 79.5 | 12.0 | 73.3 | 22.5 | 84.7 | 5.6 |
| GMD (mm) | 1.4 | 0.4 | 1.6 | 0.4 | 1.4 | 0.3 | 1.5 | 0.3 |
| MWD (mm) | 2.6 | 1.7 | 3.1 | 1.8 | 2.3 | 1.7 | 3.4 | 1.1 |
| PR (Mpa) | 2.2 | 0.3 | 2.4 | 0.2 | 2.3 | 0.2 | 2.2 | 0.4 |
| N (%) | 0.2 | 0.0 | 0.2 | 0.0 | 0.2 | 0.0 | 0.2 | 0.0 |
| SOC (%) | 2.4 | 0.2 | 2.1 | 0.2 | 2.0 | 0.2 | 2.0 | 0.3 |
| N-Stock (Mg/ha) | 3.5 | 0.5 | 3.0 | 0.3 | 6.4 | 0.6 | 6.4 | 1.1 |
| C-Stock (Mg/ha) | 33.7 | 3.7 | 30.6 | 2.8 | 62.5 | 6.8 | 63.7 | 7.2 |
| AWC (%) | 38.5 | 4.1 | 36.7 | 2.1 | 35.8 | 6.4 | 39.9 | 5.8 |
| Water content (cm) | 3.8 | 0.4 | 3.7 | 0.2 | 7.2 | 1.3 | 7.9 | 1.0 |
| CrB | ||||||||
| 0–10 cm | 10–20 cm | 20–40 cm | 40–60 cm | |||||
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | |
| pH | 7.4 | 0.2 | 7.4 | 0.2 | 7.4 | 0.2 | 7.4 | 0.1 |
| EC (µs cm−1) | 250.3 | 44.6 | 217.8 | 26.8 | 212.3 | 31.8 | 223.5 | 45.0 |
| BD (Mg m−3) | 1.5 | 0.2 | 1.5 | 0.1 | 1.5 | 0.3 | 1.5 | 0.3 |
| WSA % | 82.4 | 4.4 | 76.4 | 9.7 | 76.5 | 9.5 | 76.5 | 17.7 |
| GMD (mm) | 1.2 | 0.1 | 1.1 | 0.2 | 1.1 | 0.2 | 1.2 | 0.3 |
| MWD (mm) | 2.0 | 0.5 | 1.7 | 0.8 | 1.5 | 0.7 | 2.0 | 1.1 |
| PR (Mpa) | 2.4 | 0.2 | 2.5 | 0.5 | 2.6 | 0.2 | 2.9 | 0.7 |
| N (%) | 0.2 | 0.0 | 0.2 | 0.0 | 0.2 | 0.0 | 0.2 | 0.0 |
| SOC (%) | 2.4 | 0.3 | 2.1 | 0.4 | 1.8 | 0.4 | 1.8 | 0.5 |
| N-Stock (Mg/ha) | 3.2 | 0.2 | 3.1 | 0.3 | 5.2 | 1.6 | 5.1 | 2.2 |
| C-Stock (Mg/ha) | 34.3 | 3.2 | 32.2 | 4.1 | 53.8 | 16.8 | 54.6 | 24.4 |
| AWC (%) | 17.8 | 9.0 | 10.1 | 6.8 | 10.7 | 8.2 | 9.0 | 3.2 |
| Water content (cm) | 1.8 | 0.9 | 1.0 | 0.7 | 2.1 | 1.6 | 1.8 | 0.6 |
| Mc | ||||||||
| 0–10 cm | 10–20 cm | 20–40 cm | 40–60 cm | |||||
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | |
| pH | 7.4 | 0.1 | 7.4 | 0.1 | 7.4 | 0.1 | 7.5 | 0.1 |
| EC (µs cm−1) | 616.3 | 40.1 | 570.0 | 92.8 | 633.2 | 126.4 | 599.2 | 129.2 |
| BD (Mg m−3) | 0.6 | 0.0 | 0.7 | 0.0 | 0.6 | 0.1 | 0.6 | 0.1 |
| WSA % | 91.2 | 0.5 | 91.0 | 2.5 | 89.7 | 2.5 | 82.5 | 8.7 |
| GMD (mm) | 2.1 | 0.0 | 2.2 | 0.0 | 2.2 | 0.0 | 2.2 | 0.1 |
| MWD (mm) | 5.5 | 0.1 | 5.5 | 0.2 | 5.7 | 0.4 | 5.0 | 0.5 |
| PR (Mpa) | 1.3 | 0.1 | 1.5 | 0.3 | 1.6 | 0.3 | 1.9 | 0.1 |
| N (%) | 1.0 | 0.1 | 0.9 | 0.1 | 0.9 | 0.1 | 1.0 | 0.1 |
| SOC (%) | 15.1 | 1.1 | 15.0 | 0.8 | 14.9 | 0.9 | 15.9 | 0.6 |
| N-Stock (Mg/ha) | 6.1 | 0.8 | 6.3 | 0.7 | 11.2 | 1.7 | 12.6 | 1.9 |
| C-Stock (Mg/ha) | 95.7 | 11.7 | 102.8 | 8.8 | 186.6 | 36.2 | 196.6 | 28.0 |
| AWC (%) | 248.3 | 151.3 | 84.8 | 42.4 | 48.2 | 13.8 | 36.1 | 22.1 |
| Water content(cm) | 24.8 | 15.1 | 8.5 | 4.2 | 9.6 | 2.8 | 7.2 | 4.4 |
Abbreviations: SD: standard deviation, EC: electrical conductivity, BD: bulk density, WSA: water stable aggregates, GMD: geometrical mean diameter, MWD: mean weight diameter, PR: penetration resistance, N: nitrogen, SOC: soil organic carbon, AWC: available water capacity.