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Table 1 Grading values and weights of resistance factors for the construction of an ecological resistance surface

From: Integrating morphological spatial pattern analysis and the minimal cumulative resistance model to optimize urban ecological networks: a case study in Shenzhen City, China

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