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 |