Quoted from: Gilhespy, Sarah L., Steven Anthony, Laura Cardenas, David Chadwick, Agustin del Prado, Changsheng Li, Thomas Misselbrook et al. "First 20 years of DNDC (DeNitrification DeComposition): model evolution." Ecological modelling 292 (2014): 51-62. https://doi.org/10.1016/j.ecolmodel.2014.09.004 

Wetland-DNDC was developed by integrating two existing models, namely, PnET-N-DNDC and FLATWOODS (Sun et al., 1998), a distributed hydrological model, to predict CO2 and CH4 emissions driven by hydrology, soil biochemistry and vegetation processes in wetland ecosystems (Zhang et al., 2002b).

Zhang et al. (2002b) describes the model as consisting of four interacting sub-models which simulate water table dynamics, soil temperature, plant growth of wetland species and the anaerobic effects found in wetlands (Zhang et al., 2002b). The original version of Wetland-DNDC, described above, focused on natural wetlands with few management options. A modified version of Wetland-DNDC included enhancements by Li et al. (2004a) to enable changes in management practices that affect C sequestration to be represented, such as forest harvest, tree planting, chopping and burning and water management. An important change was made to quantify redox potential dynamics and its impacts on N2O and CH4 production. Li et al. (2004a) modified the ‘anaerobic balloon’ concept to incorporate not just the Nernst equation but merge the Nernst and Michaelis–Menten equations, this concept was later embedded and formed the core of the DNDC model.

Most of the wetland hydrological features existing in Wetland-DNDC have been incorporated in either DNDC or Forest-DNDC, as an independent model. As a consequence, Wetland-DNDC has been phased out (Fig. 3).