MPeat—A fully coupled mechanical‐ecohydrological model of peatland development

Mathematical models of long-term peatland development have been produced to analyse behaviour. However, existing ignore the mechanical processes that potential provide important feedback. Here, we propose a one-dimensional model, MPeat, couples mechanical, ecological and hydrological via poroelasticity theory, which fluid flow solid deformation. Poroelasticity formulation in MPeat is divided into two categories, fully saturated unsaturated. To validate this formulation, compare numerical solutions case with analytical Terzaghi's problem. Two groups simulations are run over 6,000 years using constant variable climate, results compared those other peat growth models, DigiBog Holocene Peat Model. Under both climatic conditions, generates expected changes bulk density, active porosity hydraulic conductivity at transition from unsaturated zone. The range values physical properties simulated by shows good agreement field measurement, indicating plausible outputs proposed model. Compared generated illustrate importance behaviour peatland. In particular, inclusion produces shallower water table depth, accumulates greater quantities carbon buffers effect climate on depth accumulation rates. These feedbacks ecohydrology stock resilience.