Roadmap for Answer Writing Introduction Briefly introduce GIS (Geographic Information Systems) as a technology used for capturing, storing, analyzing, and displaying geospatial data related to Earth’s surface. Mention how the increasing frequency and complexity of natural disasters make GIS an essential tool for ...
Model Answer Land-use change refers to human-induced modifications to the landscape, often for economic or developmental purposes. In India, rapid and often unsustainable land-use changes have heightened the frequency and intensity of natural disasters. 1. Urbanization and Concretization UrbanizatioRead more
Model Answer
Land-use change refers to human-induced modifications to the landscape, often for economic or developmental purposes. In India, rapid and often unsustainable land-use changes have heightened the frequency and intensity of natural disasters.
1. Urbanization and Concretization
Urbanization in India has led to the conversion of wetlands, forests, and hillslopes into impervious concrete surfaces. This disrupts natural drainage systems, increasing surface runoff, and exacerbating flooding. For instance, recent urban floods in cities like Mumbai, Delhi, and Kerala have been partly attributed to the encroachment of wetlands and deforestation, which had previously acted as natural flood buffers. Additionally, such land-use changes reduce groundwater recharge, making regions more vulnerable to droughts during dry spells.
2. Deforestation
The widespread deforestation to accommodate agricultural expansion and urban development contributes to the disruption of ecosystems that naturally regulate water flow. This has led to an increased risk of floods, soil erosion, and the occurrence of extreme weather events such as heatwaves and cyclones. Loss of forests also diminishes the resilience of local environments to climate change, thus intensifying the impacts of natural disasters.
3. Large-Scale Infrastructure Projects
Infrastructure projects, including large hydroelectric dams, roads, and railways, have resulted in habitat destruction and land degradation. For example, hydropower projects disrupt river ecosystems, potentially causing flash floods, Glacial Lake Outburst Floods (GLOFs), and landslides. Construction in mountainous areas, particularly for tourism, has led to significant landslides and road damage, as seen in Uttarakhand and Himachal Pradesh.
4. Coastal and Floodplain Construction
Illegal construction along floodplains and coastal areas increases exposure to flooding, coastal erosion, and storm surges. For example, unauthorized constructions in Punjab’s Ghaggar and Sutlej floodplains have led to devastating floods. Similarly, land reclamation in coastal areas makes communities more vulnerable to sea-level rise and tsunamis.
5. Agricultural Practices
Mono-cropping practices reduce crop diversity, making agriculture more susceptible to pests and diseases. This reduces food security and exacerbates vulnerability to droughts, contributing to economic and environmental disasters.
Conclusion
Sustainable land-use planning, including zoning regulations, reforestation, and comprehensive environmental impact assessments, is essential to mitigate the impact of these land-use changes and the natural disasters they fuel.
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Model Answer India can effectively harness Geographic Information Systems (GIS) to improve disaster planning, mitigation, and response strategies in the following ways: 1. Planning and Risk Assessment Hazard Inventory Mapping: GIS can create hazard inventory maps to identify areas at risk from naturRead more
Model Answer
India can effectively harness Geographic Information Systems (GIS) to improve disaster planning, mitigation, and response strategies in the following ways:
1. Planning and Risk Assessment
2. Mitigation and Vulnerability Assessment
3. Disaster Response and Relief
By integrating GIS into disaster management frameworks, India can enhance its ability to plan, mitigate, and respond to natural disasters more effectively, safeguarding both lives and infrastructure.
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