peat decomposition. The map of land subsidence produced by InSAR allows
estimates of CO 2 emissions at the wide-area level (Hoyt et al. 2020). However, the
CO 2 emission by land subsidence gives only peat degradation and not a whole
carbon balance such as net primary production (NPP).
Due to the development of several models of CO 2 emission from peatland, it is
possible to cross-check each model. Therefore, it is possible to auto-calculate the
CO 2 emission from peatland, which relates to water function (especially GWL) and
becomes the tier 3 model of the IPCC guideline (IPCC 2006, 2014).
Via estimation, it was found that water management maintained at 0.4 m or higher
can maintain carbon stock in the ground by preventing CO 2 emissions. Thus,
because carbon emission (peat degradation) relates strongly to GWL, carbon management has a meaning similar to water management. Surprisingly, the GWL of
0.4 m has been found to be effective in preventing peat fires by maintaining high soil
moisture content.
Fig. 5.6 (continued)
176
N. Tsuji et al.
estimates of CO 2 emissions at the wide-area level (Hoyt et al. 2020). However, the
CO 2 emission by land subsidence gives only peat degradation and not a whole
carbon balance such as net primary production (NPP).
Due to the development of several models of CO 2 emission from peatland, it is
possible to cross-check each model. Therefore, it is possible to auto-calculate the
CO 2 emission from peatland, which relates to water function (especially GWL) and
becomes the tier 3 model of the IPCC guideline (IPCC 2006, 2014).
Via estimation, it was found that water management maintained at 0.4 m or higher
can maintain carbon stock in the ground by preventing CO 2 emissions. Thus,
because carbon emission (peat degradation) relates strongly to GWL, carbon management has a meaning similar to water management. Surprisingly, the GWL of
0.4 m has been found to be effective in preventing peat fires by maintaining high soil
moisture content.
Fig. 5.6 (continued)
176
N. Tsuji et al.