Table 3 Allocation of Resistance Values for Each Factor

From: Integrity protection of the Chang Zhen Great Wall heritage corridor based on minimum cumulative resistance

Resistance Factor (Target Layer)

Factor Classification (Criteria Element Layer)

Resistance Value (0–200)

Slope

Flat slope (0–5°)

5

Gentle slope (5–10°)

10

Moderate slope (10–20°)

30

Steep slope (20–30°)

100

Very steep slope (>30°)

200

Aspect

Shady slope (0–45°, 315–360°)

10

Semi-shady slope (45–135°, 225–315°)

100

Sunny slope (135–225°)

200

Land Use Type

Forest

10

Grassland

30

Water area

60

Bare land

80

Cropland

120

Artificial surface

200

Vegetation Coverage

Very good vegetation coverage (>0.75)

5

Good vegetation coverage (0.75–0.5)

20

Moderate vegetation coverage (0.25–0.5)

50

Sparse vegetation coverage (<0.25)

200

Distance to Nearest Water

>1000 meters

5

500–1000 meters

120

200–500 meters

80

100–200 meters

40

<100 meters

200

Distance to Nearest Road

<200 meters

5

200–500 meters

10

500–1000 meters

30

1000–3000 meters

100

>3000 meters

200