Table 7 Changes in the value of ESs in the study area in 2020 and 2030.

From: Ecological impacts and supply demand evolution of the Yangtze to Huaihe water transfer project in Anhui section

Types of land

2020 year

2030 year

2020–2030 years

Value/billion yuan

Contribution ratio/%

Value/billion yuan

Contribution ratio/%

Trends

Variable/billion yuan

Farmland

407.73

24.99

400.04

24.54

Decline

− 7.69

Farmland

331.73

20.33

330.61

20.28

Decline

− 1.12

Grassland

50.82

3.11

50.51

3.10

Decline

− 0.31

Water

841.60

51.57

848.71

52.07

Rise

7.11

Build-up land

0

0

0

0

Rise

0

Unused land

0.02

0

0.02

0

Rise

0

Total

1631.90

100

1629.89

100

Decline

− 2.01