The Indian Remote Sensing (IRS) satellite programme, developed by the Indian Space Research Organisation (ISRO), has played a significant role in using space technology for the systematic observation and management of India’s natural resources. Since the launch of IRS-1A in 1988, the programme has provided multi-spectral and multi-resolution data for agriculture, forestry, water resources, minerals, land use and environmental monitoring.
Role of the IRS Programme
IRS satellites continuously observe the Earth’s surface and provide data useful for resource inventory, monitoring, planning and management. Their repetitive coverage helps identify changes in natural resources and environmental conditions over time. Satellite-based information is integrated with Geographical Information Systems (GIS) to support scientific decision-making and development planning.
Assistance in Natural Resource Management
- Agriculture: Satellite imagery helps in crop identification, acreage estimation, crop-condition assessment, drought monitoring and agricultural planning.
- Water Resources: IRS data assist in identifying groundwater potential zones, mapping watersheds, monitoring reservoirs and assessing surface-water resources.
- Forestry: Remote sensing enables mapping of forest cover, monitoring changes in vegetation, identifying degraded forests and assessing biodiversity and biomass.
- Land Resources: Satellites help prepare land-use and land-cover maps, identify wastelands, monitor soil conditions and support land-management planning.
- Mineral Exploration: Satellite imagery helps identify geological structures and favourable zones for mineral exploration, thereby reducing the area requiring detailed ground surveys.
- Disaster Management: IRS data support monitoring and assessment of floods, droughts, cyclones, landslides and forest fires, enabling timely planning and relief measures.
- Environmental Monitoring: They help monitor coastal areas, wetlands, urban expansion, desertification, pollution and other ecological changes.
Conclusion
Thus, the IRS programme has transformed natural-resource management from conventional ground-based assessment to systematic, synoptic and technology-driven monitoring. By providing timely spatial information, IRS satellites strengthen resource conservation, environmental protection and sustainable development planning in India.