Evaluation and Prediction of Groundwater Quality in the Source Region of the Yellow River

With the disturbance of human factors, groundwater resources in source region Yellow River have gradually depleted and water quality has become worse, which seriously affected development high-altitude areas. The from 2016 to 2020 was evaluated using single-component comprehensive evaluation methods, following by a prediction 2021 2100 based on RCPS (RCP 2.6, RCP 4.5, 8.5) scenarios coupled with SWAT hydrological model under CMIP5 global climate model. results indicated that temperature had an increasing trend, pH showed obvious decreasing total hardness (Th), sulfate, ammonia nitrogen (NH4+-N) contents exhibited no or trend during 2016–2020. increase rate (TN) phosphorus (TP) future scenario followed order 8.5 > 4.5 TN TP increased. This result is great significance, as it can help clarify current situation cold regions, showing influence change. It provides reference for utilization planning future.