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Table 9 The impacts of land use/land cover changes on the individual ecosystem service values (ESV) of Bahir Dar City between 1984 and 2019

From: The impacts of land-use and land-cover change on wetland ecosystem service values in peri-urban and urban area of Bahir Dar City, Upper Blue Nile Basin, Northwestern Ethiopia

SN

Ecosystem services

ESV across periods (USD in millions)

Overall change

ESVf 1984

ESVf 1994

ESVf 2004

ESVf 2014

ESVf 2019

1984–2019

1

Provisioning services

 Water supply

2.64

2.38

2.29

2.17

1.87

− 0.76

 Food production

3.15

3.14

2.88

2.78

2.62

− 0.53

 Raw Material

1.04

0.99

0.89

0.79

0.71

− 0.33

 Genetic Resources

0.37

0.33

0.34

0.30

0.26

− 0.11

 Medicinal resources

0.14

0.13

0.11

0.10

0.09

− 0.04

Sub-total

7.34

6.97

6.51

6.14

5.55

− 1.77

2

Regulating services

 Water regulation

7.40

6.54

6.18

5.66

4.64

− 2.76

 Waste treatment

5.72

5.55

4.77

4.33

4.01

− 1.71

 Erosion control

1.38

1.17

1.41

1.23

1.03

− 0.35

 Climate regulation

1.84

1.62

1.73

1.51

1.28

− 0.56

 Biological control

0.32

0.34

0.31

0.32

0.31

− 0.01

 Gas regulation

0.35

0.34

0.29

0.27

0.25

− 0.10

 Disturbance regulation

0.02

0.02

0.02

0.02

0.02

− 0.01

Sub-total

17.03

15.58

14.71

13.34

11.54

− 5.5

3

Supporting Services

 Nutrient cycling

1.27

1.11

1.25

1.10

0.94

− 0.33

 Pollination

0.18

0.18

0.17

0.17

0.15

− 0.03

 Soil formation

0.24

0.23

0.20

0.18

0.17

− 0.08

 Habitat/refugia

3.03

2.98

2.41

2.17

2.03

− 0.99

Sub-total

4.72

4.5

4.03

3.62

3.29

− 1.43

4

Cultural services

 Recreation

0.38

0.36

0.31

0.28

0.25

− 0.13

 Cultural

0.23

0.23

0.19

0.17

0.16

− 0.08

Sub-total

0.61

0.59

0.5

0.45

0.41

− 0.21

Total

29.71

27.65

25.75

23.54

20.80

− 8.90