Related Experiment Video
Updated: Jun 29, 2026

Soil Lysimeter Excavation for Coupled Hydrological, Geochemical, and Microbiological Investigations
Published on: September 11, 2016
Hydrochemical evolution rate response to pumping-induced hydrodynamic changes in an urban aquifer: A case study from
Xiongkun Hua1, Liangping Yang2, Jianmin Bian1
1Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Jilin University, Changchun, 130021, Jilin Province, China; College of New Energy and Environment Institute, Jilin University, Changchun, 130021, Jilin Province, China.
Abstract:
In arid and semi-arid regions, sustained groundwater extraction has significantly altered both the groundwater flow field and hydrochemical characteristics. Traditional hydrochemical studies focusing on type classification and controlling factors cannot quantitatively characterize the response rate of groundwater systems to anthropogenic disturbances. This study investigates the shallow groundwater system in the central urban area of Chifeng City using long-term groundwater level data (2000-2024) and hydrochemical data (2021 and 2024) to analyze the response relationship between hydrodynamic changes and hydrochemical evolution. The results indicate: (1) Groundwater dynamic conditions transitioned from natural factors dominance to pumping control between 2000 and 2024, with frequent dynamic type transitions at localized monitoring points reflecting hydrodynamic instability. (2) While the predominant hydrochemical type remained HCO3-Ca, pumping-induced vertical mixing drove evolution toward HCO3⋅SO4-Ca⋅Mg and Na⋅Cl⋅SO4 types. (3) Groundwater Chemical Dynamics Constant (CKC) differences showed strong positive correlation with hydrodynamic instability, with CKC variations increasing significantly with the Number of Dynamic Type Transitions (NDTT). This demonstrates that pumping accelerates hydrochemical evolution by altering hydrodynamic conditions and enhancing water mixing. CKC serves as an effective indicator for characterizing groundwater system response rates, providing scientific basis for groundwater management in arid/semi-arid urban areas.
Related Concept Videos
Rapidly Varying Flow
Application of the Energy Equation
Design Example: Design of an Irrigation Channel
Uniform Depth Channel Flow
Gradually Varying Flow
Hydraulic Jump: Problem Solving

