Table 2 Sediment and soil data of Namibia, Pakistan and the United Kingdom with their estimated carbon stocks

Organic carbon (%)

1.24

0.34

1.72

0.86

0.78

6.98

Bulk density (g/cm³)

1.17

1.56

0.82

1.50

1.13

0.73

Depth (cm)

10

10

10

10

10

10

Carbon stock (t/ha)

14.48

5.30

14.14

12.90

8.73

51.05

Area (ha)

56,010,100

82,329,000

27,225,500

77,088,000

75,663,900

24,193,000

Total carbon stock (tons)

811 × 10⁶

437 × 10⁶

385 × 10⁶

994 × 10⁶

661 × 10⁶

124 × 10⁷

Sediment carbon stock relative to soil carbon stock

186%

39%

53%