Table 1 Grading values and weights of resistance factors for the construction of an ecological resistance surface
Resistance factor | Classification index | Resistance value | Weight |
|---|---|---|---|
Elevation (m) |  < 200 | 1 | 0.06 |
200–400 | 2 | ||
400–600 | 3 | ||
600–800 | 4 | ||
 > 800 | 5 | ||
Slope (°) | 0–3 | 1 | 0.29 |
3–10 | 2 | ||
10–20 | 3 | ||
20–30 | 4 | ||
 > 30 | 5 | ||
Road distance (m) |  > 2000 | 1 | 0.21 |
1500–2000 | 2 | ||
1000–1500 | 3 | ||
500–1000 | 4 | ||
 < 500 | 5 | ||
Land-cover type | Forest land | 1 | 0.34 |
Grassland | 2 | ||
Farmland | 3 | ||
Other land | 5 | ||
Water area | 6 | ||
Built-up land | 8 |