Effect of Ecological Water Supplement on Groundwater Restoration in the Yongding River Based on Multi-Model Linkage

Evaluating the effect of ecological water supplement on groundwater restoration quantitatively could produce positive contributions to both cycle theory and surface–groundwater conjunctive management. Therefore, in this paper, a flow numerical model has been established after calculating river section seepage rate using fuzzy mathematical method Yongding River channel. The simulated results show that accurately reflect real dynamic features. Then, data-driven random forest(RF) evaluate factors which influence level variation. Nash-Sutcliffe efficiency coefficient(NSE) RF is 0.93. It shows excellent ability identify rising zone level. study infiltration capacity strong upstream area River, over 0.7. lowest 0.19 at downstream end, while middle basically between 0.4 From 2018 2019, played significant role raising along Additionally, its contribution analyzed by change 25%. Groundwater exploitation most important variable affecting impact depth fluctuation reaches about 10 m. range where average uplifts 1.86 m 502.13 km2. direction gradually changes from around variation tangential slowing down. would entirely uplift with 170 × 106 m3/year 35.77 mining reduction until 2035.