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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