Source Apportionment of Groundwater Quality Deterioration in a Highly Disturbed Riparian Zone of the Lower Yellow River Using Positive Matrix Factorization and Hydro-Chemical Analysis
Groundwater quality is jointly regulated by natural geological processes and anthropogenic activities. However, in regions subject to intense human disturbance, the quantitative identification of pollution sources remains poorly constrained. Taking the groundwater of the Shandong section of the lower Yellow River as th...