Table 2 Ecological climatic variables and niche model contribution of C.sinensis, C.cicadae, C.militaris and C.gunnii.
Climatic variables | Contribution (%) | Permutation importance (%) | Bioclimatic suitable range | Description | |
|---|---|---|---|---|---|
C. sinensis | BIO1 | 19.394 | 15.109 | > − 2.896, < 3.820 | Annual mean temperature (°C) |
BIO3 | 1.576 | 0.149 | > 36.807, < 43.624 | Isothermality (BIO2/BIO7) (×100) | |
BIO4 | 26.332 | 32.904 | > 625.292, < 802.647 | Temperature seasonality (standard deviation × 100) (C of V) | |
BIO5 | 1.791 | 2.003 | > 15.284, < 20.769 | Max temperature of warmest month (°C) | |
BIO6 | 0.705 | 3.875 | > − 18.382, < − 8.802 | Min temperature of coldest month (°C) | |
BIO8 | 0.569 | 2.154 | > 6.975, < 13.119 | Mean temperature of wettest quarter (°C) | |
BIO10 | 27.864 | 7.760 | > 7.402, < 13.238 | Mean temperature of warmest quarter (°C) | |
BIO11 | 10.068 | 10.810 | > − 11.700, < − 3.695 | Mean temperature of coldest quarter (°C) | |
BIO12 | 1.648 | 4.939 | > 469.623, < 786.046 | Annual precipitation (mm) | |
BIO14 | 1.623 | 0.862 | > 1.934, < 6.845 | Precipitation of driest month (mm) | |
BIO16 | 1.070 | 8.580 | > 253.864, < 389.728 | Precipitation of wettest quarter (mm) | |
BIO18 | 4.929 | 10.522 | > 245.872, < 384.400 | Precipitation of warmest quarter (mm) | |
BIO19 | 2.431 | 0.332 | > 7.056, < 32.828 | Precipitation of Coldest Quarter (mm) | |
C. cicadae | BIO1 | 0.273 | 0.190 | < − 15.125, > 15.161 | Annual mean temperature (℃) |
BIO3 | 4.708 | 1.683 | > 34.068 | Isothermality (bio2/bio7) (×100) | |
BIO4 | 4.490 | 5.587 | < 767.829 | Temperature seasonality (standard deviation × 100) (C of V) | |
BIO5 | 0.462 | 0.037 | > 29.287 | Max temperature of warmest month (°C) | |
BIO6 | 75.088 | 57.472 | > − 3.863, < 3.858 | Min temperature of coldest month (°C) | |
BIO8 | 1.650 | 0.740 | < − 21.296, > 21.242 | Mean temperature of wettest quarter (°C) | |
BIO10 | 0.395 | 0.162 | > 23.719 | Mean temperature of warmest quarter (°C) | |
BIO11 | 0.595 | 0.823 | > − 6.854, < 6.860 | Mean temperature of coldest quarter (°C) | |
BIO12 | 0.244 | 0.013 | > 1250.226 | Annual precipitation (mm) | |
BIO14 | 2.017 | 1.740 | > 28.762 | Precipitation of driest month (mm) | |
BIO16 | 4.103 | 6.870 | > 546.112 | Precipitation of wettest quarter (mm) | |
BIO18 | 1.233 | 3.765 | > 496.156 | Precipitation of warmest quarter (mm) | |
BIO19 | 4.743 | 20.918 | > 130.896 | Precipitation of coldest quarter (mm) | |
C. militaris | BIO1 | 1.127 | 2.763 | > 14.928 | Annual mean temperature (℃) |
BIO3 | 1.499 | 0.365 | > 39.130 | Isothermality(bio2/bio7) (×100) | |
BIO4 | 12.093 | 23.690 | < 0.501 | Temperature seasonality (standard deviation × 100) (C of V) | |
BIO5 | 4.721 | 29.797 | > 16.389, < 27.578 | Max temperature of warmest month (°C) | |
BIO6 | 1.849 | 1.416 | > 2.394 | Min temperature of coldest month (°C) | |
BIO8 | 5.077 | 25.712 | > 18.413, < 20.245 | Mean temperature of wettest quarter (°C) | |
BIO10 | 1.534 | 1.558 | > 39.130 | Mean temperature of warmest quarter (°C) | |
BIO11 | 1.368 | 0.024 | > 8.005 | Mean temperature of coldest quarter (°C) | |
BIO12 | 44.513 | 9.106 | > 2032.902 | Annual precipitation (mm) | |
BIO14 | 2.713 | 0.861 | > 33.678 | Precipitation of driest month (mm) | |
BIO16 | 8.372 | 1.130 | > 924.468 | Precipitation of wettest quarter (mm) | |
BIO18 | 13.230 | 0.443 | > 887.079 | Precipitation of warmest quarter (mm) | |
BIO19 | 1.906 | 3.135 | > 154.160 | Precipitation of coldest quarter (mm) | |
C. gunnii | BIO1 | 0.359 | 0 | > 13.644 | Annual mean temperature (℃) |
BIO3 | 10.857 | 16.481 | < 27.798 | Isothermality (bio2/bio7) (×100) | |
BIO4 | 30.768 | 28.385 | < 782.786 | Temperature seasonality (standard deviation × 100) (C of V) | |
BIO5 | 0.666 | 0.384 | > 27.860 | Max temperature of warmest month (°C) | |
BIO6 | 33.373 | 38.367 | > − 1.254 | Min temperature of coldest month (°C) | |
BIO8 | 0.419 | 2.660 | > 20.431 | Mean temperature of wettest quarter (°C) | |
BIO10 | 0.430 | 0.069 | > 22.618 | Mean temperature of warmest quarter (°C) | |
BIO11 | 19.207 | 13.050 | > 4.1866 | Mean temperature of coldest quarter (°C) | |
BIO12 | 3.146 | 0 | > 1164.830 | Annual precipitation (mm) | |
BIO14 | 0.410 | 0 | > 21.729 | Precipitation of driest month (mm) | |
BIO16 | 0.240 | 0.501 | > 546.750 | Precipitation of wettest quarter (mm) | |
BIO18 | 0.061 | 0 | > 485.224 | Precipitation of warmest quarter (mm) | |
BIO19 | 0.063 | 0.104 | > 80.997 | Precipitation of coldest quarter (mm) |
