Table 3. Impact of sensitivity analysis of the temperature, soil moisture and cold stress parameters on suitable and highly suitable areas.
| Parameter Description | Parameter Values | Area of suitable and highly suitable categories (million km2) | Difference in Area (million km2) | Comparison of EI values with baseline model (R2) |
| DV0 (Limiting low temperature) | 4 | 0.912 | +0.341 | 0.804 |
| 5 | 0.874 | +0.303 | 0.822 | |
| 6 | 0.836 | +0.265 | 0.844 | |
| 7 | 0.788 | +0.217 | 0.871 | |
| 8 | 0.736 | +0.165 | 0.913 | |
| 9 | 0.655 | +0.084 | 0.968 | |
| 10 | 0.571 | – | – | |
| 11 | 0.503 | −0.068 | 0.962 | |
| 12 | 0.443 | −0.128 | 0.890 | |
| 13 | 0.390 | −0.181 | 0.786 | |
| 14 | 0.350 | −0.221 | 0.697 | |
| 15 | 0.304 | −0.267 | 0.588 | |
| DV1 (Lower optimal temperature) | 18 | 0.751 | +0.180 | 0.974 |
| 19 | 0.711 | +0.140 | 0.982 | |
| 20 | 0.687 | +0.116 | 0.988 | |
| 21 | 0.659 | +0.088 | 0.993 | |
| 22 | 0.637 | +0.066 | 0.996 | |
| 23 | 0.613 | +0.042 | 0.998 | |
| 24 | 0.593 | +0.022 | 0.999 | |
| 25 | 0.571 | – | – | |
| 26 | 0.544 | −0.027 | 0.999 | |
| 27 | 0.518 | −0.053 | 0.999 | |
| 28 | 0.493 | −0.078 | 0.999 | |
| 29 | 0.466 | −0.105 | 0.998 | |
| DV2 (Upper optimal temperature) | 26 | 0.408 | −0.163 | 0.960 |
| 27 | 0.441 | −0.130 | 0.972 | |
| 28 | 0.472 | −0.099 | 0.985 | |
| 29 | 0.518 | −0.053 | 0.995 | |
| 30 | 0.571 | – | – | |
| 31 | 0.631 | +0.06 | 0.994 | |
| 32 | 0.702 | +0.131 | 0.977 | |
| DV3 (Limiting high temperature) | 31 | 0.416 | −0.155 | 0.954 |
| 32 | 0.489 | −0.082 | 0.989 | |
| 33 | 0.571 | – | – | |
| 34 | 0.652 | +0.081 | 0.992 | |
| 35 | 0.743 | +0.172 | 0.971 | |
| 36 | 0.765 | +0.194 | 0.968 | |
| 37 | 0.810 | +0.239 | 0.956 | |
| 38 | 0.850 | +0.279 | 0.945 | |
| SM0 (Limiting low soil moisture) | 0.08 | 0.623 | +0.052 | 0.997 |
| 0.09 | 0.600 | +0.029 | 0.998 | |
| 0.1 | 0.571 | – | – | |
| 0.11 | 0.546 | −0.025 | 0.999 | |
| 0.12 | 0.520 | −0.051 | 0.997 | |
| SM1 (Lower optimal soil moisture) | 0.48 | 0.586 | +0.015 | 0.999 |
| 0.49 | 0.574 | +0.003 | 0.999 | |
| 0.5 | 0.571 | – | – | |
| 0.51 | 0.561 | −0.010 | 0.999 | |
| 0.52 | 0.554 | −0.017 | 0.999 | |
| SM2 (Upper optimal soil moisture) | 1.18 | 0.569 | −0.002 | 0.999 |
| 1.19 | 0.569 | −0.002 | 0.999 | |
| 1.2 | 0.571 | – | – | |
| 1.21 | 0.571 | 0 | 0.999 | |
| 1.22 | 0.571 | 0 | 0.999 | |
| SM3 (Limiting high soil moisture) | 1.58 | 0.566 | −0.005 | 0.999 |
| 1.59 | 0.568 | −0.003 | 0.999 | |
| 1.6 | 0.571 | – | – | |
| 1.61 | 0.572 | +0.001 | 0.999 | |
| 1.62 | 0.575 | +0.004 | 0.999 | |
| TTCS (Cold stress temperature threshold) | 4 | 0.601 | +0.030 | 0.993 |
| 5 | 0.571 | – | – | |
| 6 | 0.534 | −0.037 | 0.983 | |
| THCS (Cold stress temperature rate) | −0.004 | 0.571 | – | – |
| DTCS (Minimum degree-day cold stress threshold) | 14 | 0.581 | +0.010 | 0.998 |
| 15 | 0.571 | – | – | |
| 16 | 0.557 | −0.014 | 0.997 | |
| DHCS (Degree-day cold stress rate) | −0.0022 | 0.571 | – | – |
Values in bold represent the baseline model parameter.