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Table 3 Total and extra CO2-C flux (g C m-2 period-1) during FTC

From: Influence of freeze-thaw events on carbon dioxide emission from soils at different moisture and land use

Cycle

CO2-C flux

Variants of soils

  

FDS

FWS

ADS

AWS

First cycle

Extra flux (after thawing)

1.37

0.81

0.70

0.25

 

Total flux

7.00

7.34

2.73

1.47

 

Extra flux/Total flux, %

19.6

11.1

25.5

17.2

Second cycle

Extra flux (before freezing)

0.23

0.32

0.14

0.08

 

Extra flux (after thawing)

0.56

-0.10

0.41

0.13

 

Total extra flux

0.79

0.22

0.56

0.21

 

Total flux

6.46

7.04

2.84

1.77

 

Extra flux/Total flux, %

12.3

3.1

19.6

11.7

The whole period

Total extra flux

2.17

1.03

1.25

0.46

 

Total flux

13.5

14.4

5.56

3.24

 

Extra flux/Total flux, %

16.1

7.2

22.5

14.2

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Carbon Balance and Management

ISSN: 1750-0680

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