Environmental factor

Weight

Class interval

Ranks

Degrees of vulnerability

Wetness

12.6

<1

1 - 7

7 - 23

23 - 32

>=32

1

2

3

4

5

Very low

Low

Medium

High

Very high

Forest cover

10.8

Dense forest

Medium forest

Open forest

Non forest

5

4

3

1

Very high

High

Medium

Very Low

Rainfall

8.1

<1257 mm

1257 - 1264 mm

1264 - 1271 mm

1271 - 1278 mm

>=1278 mm

1

2

3

4

5

Very low

Low

Medium

High

Very high

Aspect

8.1

Non shadow

Shadow

1

3

Very low

Medium

Elevation

5.7

<200 meter

200 - 400 meter

400 - 600 meter

600 - 800 meter

>=800 meter

5

4

3

2

1

Very high

High

Medium

Low

Very low

Slope

5.7

<4

4 - 9

9 - 18

>=18

4

3

2

1

High

Medium

Low

Very low

Drainage buffer

4.8

<250 meter

250 - 500 meter

500 - 750 meter

750 - 1000 meter

>=1000 meter

5

4

3

2

1

Very high

High

Medium

Low

Very low

Water buffer

4.2

<400 meter

400 - 800 meter

800 - 1200 meter

1200 - 1600 meter

>=1600 meter

5

4

3

2

1

Very high

High

Medium

Low

Very low