Multi-dimensional scaling for space-time transformation to achieve sustainable planning and management of water resource under changing land use pattern
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View abstract on PubMed
Summary
This summary is machine-generated.Land use changes significantly impact groundwater resources in the Ganga basin, with settlement expansion driving substantial water depletion and drought severity. Sustainable water management is crucial for mitigating these effects and ensuring resource availability.
Area Of Science
- Hydrology and Environmental Science
- Remote Sensing and Geospatial Analysis
- Land Use Change Dynamics
Background
- Land use transition critically influences terrestrial environmental services, affecting groundwater and water resources.
- The Ganga basin, a densely populated and agriculture-intensive region, faces significant water resource challenges.
- Ecological health and groundwater sustainability depend on effective land use mapping and management.
Purpose Of The Study
- To assess the impact of land use transition on groundwater depth, drought, and terrestrial water storage in the Ganga basin.
- To analyze multi-temporal spatial data including land use, gravity anomalies, and well logs.
- To identify patterns and trends in land use change and their hydrological consequences.
Main Methods
- Utilized multi-temporal spatial databases: ESA-CCI land use, GRACE/GRACE-FO gravity anomaly, and CGWB well logs.
- Employed Sen's slope for trend magnitude, Innovative Trend Analysis (ITA) for visualization, and clustering for pattern identification.
- Applied multi-dimensional scaling (ALSCAL) for space-time transformation and bi-dimensional regression for model validation.
Main Results
- Over two decades, settlement area increased by 208.4%, while agriculture and grassland decreased.
- Significant groundwater depletion and increased drought severity were observed, particularly in the upper and northern Ganga basin during the post-monsoon season.
- Conversion to settlement areas showed the maximum impact on groundwater and terrestrial water storage (TWSA) loss.
Conclusions
- Land use transition, especially settlement expansion, poses a severe threat to groundwater and terrestrial water resources in the Ganga basin.
- Urgent, collaborative efforts among policymakers, scientists, government, and local communities are needed for sustainable groundwater management.
- Integrated water resource management, considering environmental, economic, social, and institutional dimensions, is vital for mitigating climate change impacts on water resources.
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