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[Spatio-temporal Evolution of Groundwater Vulnerability Based on Spatial Autocorrelation]
Yu Liu1,2, Shuang-Shuang Lan1,2, Yong-Xiang Zhang1,2
1College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China.
Huan Jing Ke Xue= Huanjing Kexue
|July 3, 2018
Summary
Groundwater vulnerability in Beijing
Area of Science:
- Hydrogeology
- Environmental Science
- Human Geography
Context:
- Groundwater vulnerability assessment is crucial for sustainable water resource management.
- Human activities significantly influence groundwater vulnerability patterns over time.
- Understanding spatiotemporal dynamics aids in effective groundwater protection strategies.
Purpose:
- To analyze the temporal and spatial variations in groundwater vulnerability in Beijing's Chaoyang District.
- To evaluate the impact of human factors, including land use, on groundwater vulnerability.
- To predict future trends in groundwater vulnerability for risk mitigation.
Summary:
- The DRASTIC model was adapted to assess groundwater vulnerability using hydrogeological and socio-human data from 2004, 2010, and 2016.
- Spatiotemporal analysis revealed a reduction in high vulnerability areas and strong spatial aggregation, concentrated in the northeast and southwest.
- Vulnerability decreased in the northeast but remained stable in the northwest, attributed to land use changes and reduced fertilizer application.
Impact:
- Provides quantitative insights into groundwater vulnerability dynamics influenced by human activities.
- Highlights the importance of land use planning and agricultural practices in mitigating groundwater pollution risks.
- Informs policy-making for sustainable groundwater resource management in urban areas.
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