Table 1 Details of the variables, their value ranges, percent contributions to the Maxent model, and permutation importance
Parameter | Full name or description (*) | Value range | Percent contribution | Permutation importance |
|---|---|---|---|---|
bio1 | Annual mean temperature (°C) | 10.29–23.05 | 0.17 | 0.33 |
bio2 | Mean diurnal range [mean of monthly (max temp—min temp)] (°C) | 9.25–12.95 | 0.47 | 1.21 |
bio3 | Isothermality (BIO2/BIO7) (× 100) (%) | 47.02–53.25 | 14.11 | 6.04 |
bio4 | Temperature seasonality (standard deviation × 100) | 307.35–448.04 | 4.45 | 5.92 |
bio5 | Max temperature of warmest month (°C) | 16.4–36.3 | 0.01 | 0.01 |
bio6 | Min temperature of coldest month (°C) | − 2.2 to 11.3 | 18.25 | 21.14 |
bio7 | Temperature annual range (BIO5–BIO6) (°C) | 18.6–25 | 0.36 | 1.71 |
bio8 | Mean temperature of wettest quarter (°C) | 14.55–26.45 | 0.06 | 0.00 |
bio9 | Mean temperature of driest quarter (°C) | 4.87–19.35 | 0.37 | 1.15 |
bio10 | Mean temperature of warmest quarter (°C) | 14.55–26.45 | 0.07 | 0.01 |
bio11 | Mean temperature of coldest quarter (°C) | 4.87–17.73 | 0.34 | 0.92 |
bio12 | Annual precipitation (mm) | 916–1616 | 29.73 | 26.75 |
bio13 | Precipitation of wettest month (mm) | 173–342 | 0.12 | 0.04 |
bio14 | Precipitation of driest month (mm) | 5–22 | 0.04 | 0.40 |
bio15 | Precipitation seasonality (coefficient of variation) | 74.48–90.55 | 6.77 | 4.57 |
bio16 | Precipitation of wettest quarter (mm) | 486–911 | 0.01 | 0.02 |
bio17 | Precipitation of driest quarter (mm) | 28–73 | 14.45 | 11.97 |
bio18 | Precipitation of warmest quarter (mm) | 486–911 | 0.33 | 0.65 |
bio19 | Precipitation of coldest quarter (mm) | 31–79 | 1.67 | 9.78 |
wind | Wind speed (m s−1) | 0.7–2.5 | 0.90 | 0.55 |
vapr | Water vapor pressure (kPa) | 0.62–1.51 | 0.21 | 0.08 |
srad | Solar radiation (kJ m−2 day−1) | 10,858–14,288 | 3.28 | 3.99 |
sand | *Particle size from 0.05 to 2 mm | 22–61 | 0.13 | 0.17 |
silt | *Particle size from 0.002 to 0.05 mm | 17–49 | 0.84 | 0.96 |
clay | *Particle size less than 0.002 mm | 14–48 | 0.06 | 0.07 |
slope | *Extract from DEM (°) | 0–70.49 | 1.59 | 0.86 |
Sin_aspect | *Aspect (east to west) = sin((π/180) × aspect (degree)) | − 1 to 1 | 0.53 | 0.25 |
Cos_aspect | *Aspect (north to south) = cos((π/180) × aspect (degree)) | − 1 to 1 | 0.67 | 0.46 |