Table 3.
The threshold values (suitability index >30%) and optimal ranges (suitability index >50%) for each critical environmental variable.
| Variable | Meaning | Threshold values (SI > 30%) |
Optimal ranges (SI > 50%) |
||||
|---|---|---|---|---|---|---|---|
| Min | Max | Mean | Min | Max | Mean | ||
| ASL | Elevation (m) | 857 | 6076 | 3977 | 979 | 6043 | 3865 |
| Bio18 | Precipitation of warmest quarter (mm) | 16 | 1205 | 344 | 16 | 900 | 338 |
| Bio11 | Mean temperature of coldest quarter (°C) | −25.2 | 10.3 | −7.4 | −22.8 | 8.6 | −7.1 |
| T_TEB | Topsoil TEB (cmol/kg) | 1.6 | 68.2 | 11.5 | 1.6 | 68.2 | 12.1 |
| Bio12 | Annual precipitation (mm) | 21 | 1969 | 582 | 21 | 1542 | 579 |
| Bio6 | Min temperature of coldest month (°C) | −30.5 | 2.4 | −16.9 | −28.2 | 0.7 | −16.8 |
| T_CASO4 | Topsoil gypsum (% weight) | 0 | 1.8 | 0.03 | 0 | 1.8 | 0.02 |
| T_CEC_CLAY | Topsoil CEC (clay) (cmol/kg) | 8 | 109 | 50.3 | 8 | 109 | 57.4 |
| Bio14 | Precipitation of driest month (mm) | 0 | 20 | 3 | 0 | 19 | 3 |
| AWC_CLASS | AWC range | 1 | 7 | 5 | 1 | 6 | 5 |