Table 6 Normalized weights for subcategory ratings and thematic layers.

From: Mapping the groundwater potential zones in mountainous areas of Southern China using GIS, AHP, and fuzzy AHP

Thematic layer/factor

Feature/class

Area (%)

Assigned rank

Normalized rank (%)

Weight-AHP (%)

Weight-FAHP (%)

Reference

Slope(°)

0–7.70

30.01

9

28.12

28.32

21.18

6,30,32

7.70–14.33

28.12

8

25.00

14.33–21.76

21.97

7

21.87

21.76–30.78

14.46

5

15.63

30.78–67.67

5.44

3

9.38

TWSC (mm/year)

890.88–916.80

33.67

5

14.29

4.12

8.00

19

916.80–942.71

19.61

6

17.14

942.71–968.62

14.35

7

20.00

968.62–994.54

22.98

8

22.86

994.54–1,020.45

9.39

9

25.71

Drainage density (km/km2)

0–0.28

26.61

4

11.76

15.78

16.82

3,27,45

0.28–0.67

23.44

6

17.65

0.67–1.06

24.16

7

20.59

1.06–1.54

19.04

8

23.53

1.54–3.23

6.75

9

26.47

Distance to faults (km)

0-0.20

24.67

9

29.03

10.35

13.54

12,52

0.20–0.40

18.58

8

25.81

0.40–0.60

13.91

7

22.58

0.60–1.00

17.82

5

16.13

1.00–5.74

25.02

2

6.45

Lithology

Alluvium, karst, and coarse gravel

5.33

9

37.50

32.51

24.28

32,36,55,63

Coarse sand and granule conglomerate

35.26

7

29.17

Siltstone and shale

48.72

5

20.83

Granite and marly clay

10.69

3

12.50

Spring flow(L/s)

0.01–0.10

8.32

4

11.76

6.33

10.10

6

0.10–0.50

47.96

6

17.65

0.50–1.00

23.90

7

20.59

1.00–3.00

15.82

8

23.53

3.00–16.20

4.00

9

26.47

Land use

Water body and cultivated land

21.54

9

33.33

2.59

6.08

27,50,59

Grassland

22.97

8

29.63

Forest

53.05

7

25.93

Artificial surface and bare land

2.44

3

11.11