Table 2. Soil properties.
| Soil ID | coordination | MAT (°C) | MAP (mm) | soil management | soil texture | pH | EC (dS m−1) | WHC (%) | Silt (%) | Clay (%) | T-N (%) | OC (%) | WSOC (mg kg−1) | AOC (mg kg−1) | AOC/WSOC (%) |
| AZ-C1 | LAT: 32.69°N, LON: 114.61°W. | 23.9 | 76.5 | Conv | clay | 7.9 | 1.945 | 47.5 | 39.9 | 43.9 | 0.07 | 1.81 | 54.2 | 1.66 | 3.07 |
| AZ-C2 | Conv | clay | 8.0 | 2.170 | 47.9 | 38.5 | 42.8 | 0.06 | 1.78 | 37.1 | 1.73 | 4.65 | |||
| AZ-C3 | Conv | silty clay | 7.9 | 1.929 | 51.2 | 38.5 | 44.0 | 0.10 | 1.76 | 47.2 | 1.50 | 3.18 | |||
| AZ-C4 | Conv | silty clay | 7.9 | 1.836 | 47.7 | 42.8 | 42.2 | 0.12 | 1.86 | 57.0 | 2.41 | 4.24 | |||
| AZ-C5 | Conv | clay loam | 8.0 | 1.874 | 49.4 | 40.3 | 38.5 | 0.05 | 1.77 | 52.0 | 1.99 | 3.82 | |||
| AZ-C6 | Conv | clay loam | 8.0 | 2.160 | 44.0 | 36.5 | 39.8 | 0.07 | 1.91 | 48.7 | 1.56 | 3.20 | |||
| AZ-O1 | Org | clay | 7.9 | 1.182 | 51.2 | 38.5 | 44.0 | 0.07 | 1.91 | 133.8 | 6.51 | 4.86 | |||
| AZ-O2 | Org | clay | 8.0 | 1.238 | 47.8 | 38.2 | 44.3 | 0.06 | 1.95 | 118.3 | 8.83 | 7.46 | |||
| AZ-O3 | Org | silty clay | 7.9 | 1.213 | 47.4 | 40.8 | 41.7 | 0.06 | 1.91 | 144.9 | 7.27 | 5.02 | |||
| AZ-O4 | Org | silty clay | 8.0 | 1.179 | 46.6 | 40.8 | 41.7 | 0.06 | 1.79 | 100.5 | 7.76 | 7.73 | |||
| AZ-O5 | Org | clay loam | 8.0 | 1.287 | 53.4 | 42.9 | 39.6 | 0.07 | 1.93 | 72.8 | 1.60 | 2.20 | |||
| AZ-O6 | Org | clay loam | 8.0 | 1.228 | 42.1 | 42.9 | 39.6 | 0.06 | 1.88 | 85.4 | 4.72 | 5.52 | |||
| IM-C1 | LAT: 32.85°N, LON: 115.49°W. | 22.8 | 74.2 | Conv | clay | 7.7 | 1.171 | 47.2 | 39.1 | 41.0 | 0.06 | 1.77 | 43.7 | 0.84 | 1.91 |
| IM-C2 | Conv | clay | 7.5 | 3.600 | 45.4 | 26.3 | 43.7 | 0.09 | 2.05 | 65.0 | 3.45 | 5.31 | |||
| IM-C3 | Conv | sandy loam | 7.7 | 0.802 | 38.8 | 16.6 | 18.4 | 0.04 | 1.26 | 44.4 | 1.16 | 2.62 | |||
| IM-C4 | Conv | sandy loam | 7.8 | 1.460 | 34.6 | 20.8 | 14.2 | 0.04 | 1.50 | 67.7 | 3.23 | 4.78 | |||
| IM-C5 | Conv | clay loam | 7.8 | 0.981 | 43.2 | 42.1 | 35.5 | 0.04 | 1.96 | 75.2 | 1.20 | 1.60 | |||
| IM-C6 | Conv | clay loam | 7.6 | 1.456 | 30.8 | 42.1 | 35.5 | 0.06 | 2.20 | 51.3 | 1.12 | 2.18 | |||
| IM-O1 | Org | clay | 7.7 | 1.425 | 58.6 | 26.4 | 56.2 | 0.08 | 2.06 | 102.9 | 3.08 | 3.00 | |||
| IM-O2 | Org | clay | 7.7 | 3.030 | 43.8 | 34.9 | 47.7 | 0.11 | 2.14 | 43.3 | 1.31 | 3.03 | |||
| IM-O3 | Org | sandy loam | 8.1 | 0.908 | 30.4 | 8.3 | 16.7 | 0.05 | 1.21 | 68.2 | 0.66 | 0.97 | |||
| IM-O4 | Org | sandy loam | 7.8 | 1.102 | 36.5 | 22.0 | 16.8 | 0.06 | 1.59 | 72.5 | 1.93 | 2.67 | |||
| IM-O5 | Org | clay loam | 7.7 | 2.130 | 39.9 | 33.6 | 36.5 | 0.11 | 2.10 | 49.5 | 1.91 | 3.86 | |||
| IM-O6 | Org | clay loam | 7.7 | 1.708 | 39.9 | 38.2 | 29.4 | 0.07 | 1.97 | 55.3 | 0.89 | 1.61 | |||
| SA-C1 | LAT: 36.69°N, LON: 121.58°W. | 14.4 | 328 | Conv | sandy loam | 7.4 | 0.638 | 21.4 | 13.1 | 8.8 | 0.13 | 1.28 | 52.1 | 1.40 | 2.68 |
| SA-C2 | Conv | loamy sand | 6.8 | 0.177 | 19.4 | 13.0 | 6.3 | 0.03 | 0.51 | 72.7 | 1.69 | 2.33 | |||
| SA-C3 | Conv | loam | 7.8 | 0.371 | 31.0 | 28.8 | 15.5 | 0.09 | 1.13 | 65.1 | 1.37 | 2.11 | |||
| SA-C4 | Conv | clay loam | 8.1 | 0.509 | 60.3 | 44.6 | 33.8 | 0.19 | 2.39 | 75.9 | 1.74 | 2.30 | |||
| SA-O1 | Org | sandy loam | 6.9 | 0.369 | 25.8 | 15.6 | 10.0 | 0.14 | 1.58 | 68.1 | 3.37 | 4.94 | |||
| SA-O2 | Org | sandy loam | 6.7 | 0.319 | 37.3 | 31.0 | 15.9 | 0.20 | 2.87 | 114.6 | 5.44 | 4.75 | |||
| SA-O3 | Org | sandy loam | 7.7 | 0.803 | 75.8 | 39.0 | 43.6 | 0.24 | 3.09 | 131.2 | 6.44 | 4.91 | |||
| SA-O4 | Org | clay | 8.0 | 0.681 | 49.6 | 35.8 | 14.4 | 0.11 | 1.00 | 130.8 | 3.69 | 2.82 |
LAT, latitude; LON, longitude; MAT, mean annual temperature; MAP, mean annual precipitation; Org denotes organically managed soil, Conv denotes conventionally managed soil. EC, electrical conductivity salinity; WHC, water holding capacity; T-N, total nitrogen; OC, organic carbon; WSOC, water soluble organic carbon in soil water extract (soil∶water, 1∶1); MBC, microbial biomass carbon.