Table 2 Indices of water saving changes at the Manas River Basin.

From: Change in Land Use and Evapotranspiration in the Manas River Basin, China with Long-term Water-saving Measures

Item

1980

2000

2005

2010

2015

Water efficiency of canal system

0.58–0.62

0.65

0.68

0.7

0.76

Field water utilization coefficient

0.61

0.86

0.87

0.89

0.9

Utilization coefficient of irrigation water

0.38

0.57

0.60

0.65

0.68

Canal seepage rate %

10.1

15.4

1.24

24.3

31.3

Water saving irrigation area ratio %

/

4.3

15.6

79.2

82.1

Irrigation water consumption (m³/0.667ha)

/

541

492

449

430

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