Simulation results when groundwater is not exploited
First, in the simulation time without pumping wells, since the initial head values in the study area were artificially set when the model was established, the overall initial head values decreased from west to east, while the head values at the eastern constant head boundary were equal to the initial head values set at the eastern boundary, and the western boundary was set as a flux boundary to continuously recharge the entire study area. Therefore, in the simulation time without pumping wells, the overall groundwater flow direction is from west to east, and the wetland is sufficiently recharged. At this time, the wetland will not be degraded, which is the first process of wetland–aquifer interaction.