Spatio-temporal patterns of land use and land cover, and their impact on groundwater quality in the industrialized Muvattupuzha basin
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View abstract on PubMed
Summary
This summary is machine-generated.Rapid urbanization in India is degrading groundwater quality, especially near industrial zones. Protecting natural landscapes like forests is crucial for maintaining excellent groundwater, necessitating integrated land and water management.
Area Of Science
- Environmental Science
- Hydrology
- Remote Sensing
Background
- India's rapid urbanization and industrialization exert significant pressure on groundwater resources.
- Land Use and Land Cover (LULC) changes are transforming landscapes, impacting water availability and quality.
Purpose Of The Study
- To assess the spatio-temporal dynamics of LULC and groundwater quality over two decades (2003-2023) in Kerala's Muvattupuzha River Basin.
- To investigate the relationship between LULC changes and groundwater quality degradation.
Main Methods
- Multi-temporal Landsat imagery classification using the Support Vector Machine (SVM) algorithm.
- Calculation of the Entropy-based Groundwater Quality Index (EGWQI).
- Spatio-temporal analysis, including proximity and correlation analyses.
Main Results
- Significant expansion of built-up areas (32.09%) and decline in forest cover (17.91%) and agricultural land (4%).
- Strong inverse relationship between EGWQI and built-up areas (r=-0.91); positive association with forests and water bodies (r≥0.98).
- Identified contamination hotspots near industrial and agricultural zones, exacerbated by monsoonal runoff.
Conclusions
- Natural ecosystems play a vital buffering role in maintaining groundwater quality.
- Industrial zones and quarries are key drivers of localized groundwater degradation.
- Urgent need for integrated land-water governance, green infrastructure, and strict effluent management for sustainable groundwater resources in urbanizing tropical basins.
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