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Table 1 Details of the variables, their value ranges, percent contributions to the Maxent model, and permutation importance

From: Evaluating the productivity of ancient Pu’er tea trees (Camellia sinensis var. assamica): a multivariate modeling approach

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
  1. * indicates explanations or essential information of parameters