Factor

Elevation

Mountain

Water body

Ecological protection redline

Cultural relics protection units

Population density

Road traffic network

Important transportation hub

Elevation

1

3

1/2

6

2

5

4

7

Mountain

1/3

1

1/4

3

1/2

3

2

5

Water body

2

4

1

7

3

6

5

8

Ecological protection redline

1/6

1/3

1/7

1

1/5

1/2

1/3

2

Cultural relics protection units

1/2

2

1/3

5

1

4

3

6

Population density

1/5

1/3

1/6

2

1/4

1

1/2

3

Road traffic network

1/4

1/2

1/5

3

1/3

2

1

4

Important transportation hub

1/7

1/5

1/8

1/2

1/6

1/3

1/4

1