River Ecological Restoration and Groundwater Artificial Recharge

Dear Colleagues,

There is a strong relationship between river and groundwater in nature. With the large-scale exploitation of riverside groundwater resources, this has caused adverse ecological impacts on the river and groundwater environment, such as water table depression, land subsidence, dried up rivers and even dry-up, and vegetation degradation. Using ecological replenishment of the river to increase groundwater recharge is an important method of managed aquifer recharge (MAR), which can effectively solve the problem of groundwater overextraction, increase river flow, and improve water quality. There are still many scientific and technical problems due to the diversity of replenishment water sources and the complexity of the infiltration process and hydrogeochemical reactions, although many such water replenishment practices have been carried out worldwide—for example, the clogging of the infiltration process, the groundwater quality change caused by unpredictable hydrogeochemical reactions, the underground fate of emerging pollutants introduced by replenishment water, the coupled model construction of river–groundwater under water replenishment condition, and so on. In addition, an evaluation of the effect of river ecological replenishment on groundwater resources recharge, risk assessment of land subsidence and urban safety, and impact assessment of the groundwater environment are also urgently needed.

Prof. Dr. Yuanzheng Zhai
Prof. Dr. Jin Wu
Prof. Dr. Huaqing Wang
Guest Editors

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