Table 1.
Geographical coordinate, 19 bioclimatic variables and the two first principal component scores for these bioclimatic variables of sampling sites.
| Variable | Bayantuohai | Holingole | Bayanwula | Wuliyasitai | East-Xilinhot | West-Xilinhot | Bieligutai | |
|---|---|---|---|---|---|---|---|---|
| Geographical coordinate | ||||||||
| Longitude (°E) | 119.55 | 119.72 | 117.73 | 117.03 | 116.61 | 115.58 | 115.07 | |
| Latitude (°N) | 49.07 | 45.43 | 44.63 | 45.57 | 44.24 | 43.89 | 44 | |
| Altitude (m) | 951 | 950 | 1104 | 998 | 1121 | 1073 | 1149 | |
| Bioclimatic variable | ||||||||
| Annual Mean Temperature | −1.2 | 0.7 | 0.7 | 0.6 | 0.4 | 1.6 | 0.8 | |
| Mean Diurnal Range (Mean of monthly (max - min)), BIO2 | 12.7 | 13.5 | 13.3 | 13.7 | 13.6 | 14 | 14 | |
| Isothermality (BIO2/BIO7) (*100)⁑ | 2.2 | 2.6 | 2.6 | 2.5 | 2.6 | 2.6 | 2.5 | |
| Temperature Seasonality (standard deviation *100)⁑ | 158.1 | 136.3 | 135.5 | 149.7 | 138.3 | 143.3 | 144.3 | |
| Max Temperature of Warmest Month, BIO5 | 25.7 | 25 | 24.9 | 26.9 | 25.2 | 27 | 26.4 | |
| Min Temperature of Coldest Month, BIO6⁑ | −30.9 | −25.7 | −25.4 | −27.5 | −26.4 | −26.6 | −27.6 | |
| Temperature Annual Range (BIO5-BIO6), BIO7 | 56.6 | 50.7 | 50.3 | 54.4 | 51.6 | 53.6 | 54 | |
| Mean Temperature of Wettest Quarter | 17.9 | 17.5 | 17.2 | 18.9 | 17.3 | 18.9 | 18.3 | |
| Mean Temperature of Driest Quarter | −19.4 | −17.6 | −17.7 | −19.7 | −18.4 | −18.2 | −19.1 | |
| Mean Temperature of Warmest Quarter | 17.9 | 17.5 | 17.2 | 18.9 | 17.3 | 18.9 | 18.3 | |
| Mean Temperature of Coldest Quarter | −22.8 | −17.6 | −17.7 | −19.7 | −18.4 | −18.2 | −19.1 | |
| Annual Precipitation※ | 358 | 416 | 352 | 263 | 325 | 269 | 253 | |
| Precipitation of Wettest Month※ | 103 | 131 | 104 | 75 | 93 | 75 | 70 | |
| Precipitation of Driest Month※ | 3 | 3 | 3 | 2 | 3 | 2 | 2 | |
| Precipitation Seasonality (Coefficient of Variation) | 111 | 115 | 109 | 112 | 106 | 107 | 105 | |
| Precipitation of Wettest Quarter※ | 249 | 297 | 243 | 183 | 221 | 183 | 174 | |
| Precipitation of Driest Quarter | 12 | 10 | 9 | 6 | 9 | 6 | 6 | |
| Precipitation of Warmest Quarter※ | 249 | 297 | 243 | 183 | 221 | 183 | 174 | |
| Precipitation of Coldest Quarter | 12 | 10 | 9 | 6 | 9 | 6 | 6 | |
| PC scores for 19 bioclimatic variables | PC-1 (56.36% variance) | 0.66 | 1.27 | 0.79 | −1.04 | 0.39 | −1.06 | −1 |
| PC-2 (36.12% variance) | −2.09 | 0.66 | 0.77 | −0.37 | 0.44 | 0.52 | 0.07 | |
Variables whose absolute values of factor loading are above 0.90 are marked by ※for PC-1 and ⁑for PC-2, respectively.