For Prelims: Geographical Information System (GIS), Spatial Data, Vector Data, Raster Data, Urban Planning, Environmental Management, Disaster Management, Agriculture, Space Technology, Bhuvan, Bharat Maps, Gram Manchitra, Artificial Intelligence, IoT, Big Data, Cloud Computing, Open-Source GIS, SVAMITVA Scheme, National Geospatial Policy (NGP) 2022.

For Mains: Geographical Information System (GIS): its applications across various sectors, significance, challenges and the way forward.

What is a Geographical Information System (GIS)?

• About:
  • A Geographical Information System (GIS) is a computer-based system used to capture, store, manage, analyze, and visualize geographically referenced or spatial data.
  • It combines hardware, software, data, and analytical tools to understand location-based information and support effective decision-making.
• Types of GIS Data:
  • Vector Data: Represents geographical features through points, lines, and polygons, making it useful for features such as roads, boundaries, and locations.
  • Raster Data: Represents the Earth's surface through a grid of cells or pixels, where each cell contains information related to attributes such as temperature, elevation, vegetation, or land use.

What are the Applications of GIS?

• Urban Planning:
  • GIS is widely used in urban planning to support efficient, sustainable, and data-driven development. It helps map land use by classifying areas into residential, commercial, industrial, and recreational zones.
  • It supports infrastructure planning by analysing population distribution, terrain, and existing utilities, enabling better planning of roads, public transport, drainage, sewage networks, and other urban facilities.
• Environmental Management:
  • GIS plays an important role in natural resource conservation and environmental management.
  • It helps monitor deforestation by analysing changes in forest cover through satellite imagery.
  • GIS can also assist in monitoring air, water, and soil pollution by mapping pollution sources and their spatial spread.
  • It supports wildlife and biodiversity management through mapping of habitats, migration routes, ecological zones, and human encroachment.
• Disaster Management:
  • GIS is useful across different stages of disaster management, including prevention, preparedness, response, and recovery.
  • It supports flood-risk mapping by combining elevation, rainfall, drainage, and hydrological information.
  • For earthquake-risk assessment, GIS can map fault zones, vulnerable infrastructure, and exposed populations.
  • During disasters, GIS assists in evacuation planning, shelter identification, route mapping, and coordination of relief operations.
• Agriculture:
  • GIS contributes to productive and sustainable agriculture through location-based and data-driven decision-making.
  • It supports precision farming by providing information about crop health, soil conditions, irrigation needs, and land characteristics.
  • Spatial soil analysis can help identify variations in fertility, moisture, pH, and nutrient requirements.
  • GIS can also assist in monitoring pest and disease outbreaks, enabling timely and targeted agricultural interventions.
• Space Research:
  • GIS is an important tool in space research, particularly for mapping, spatial analysis, and mission planning.
  • It supports planetary mapping by creating detailed spatial representations of celestial bodies such as the Moon and Mars.
  • GIS-based analysis can help researchers identify safe and scientifically significant locations for exploration and landing missions.
  • When combined with remote sensing, GIS strengthens the study of both Earth and extraterrestrial landscapes.

How Does GIS Integrate with Other Technologies?

• AI and Machine Learning: GIS can be integrated with Artificial Intelligence (AI) and Machine Learning (ML) to improve spatial analysis and predictive capabilities.
  • Predictive Analysis: AI can analyse historical geospatial information to identify possible trends in urban expansion, land-use changes, environmental conditions, and climate patterns.
  • Image Classification: ML algorithms can classify land features, identify changes in satellite imagery, and extract useful information from complex geospatial datasets.
• Real-Time Data Collection: Integration of the Internet of Things (IoT) with GIS enables real-time monitoring and spatial analysis.
  • IoT devices such as sensors and GPS-enabled systems continuously generate location-based data that can be visualized and analysed through GIS platforms for smart cities, environmental monitoring, agriculture, and disaster management.
• Big Data: Modern geospatial systems generate extremely large datasets. Big Data technologies help store, process, and analyse information that conventional GIS systems may find difficult to handle.
  • GIS combined with Big Data enables the extraction of meaningful insights from large-scale spatial datasets for planning and decision-making.

What are the Government Initiatives Related to GIS in India?

• National Geospatial Policy (NGP) 2022: Its objective is to strengthen India’s geospatial ecosystem and promote the use of geospatial data and technology across public and private sectors.
  • It focuses on developing geospatial infrastructure, skills, standards, knowledge, and businesses.
• SVAMITVA Scheme: It uses drone surveys and GIS-based mapping to support property documentation and digitisation of rural land records.
  • It aims to improve property ownership records, reduce disputes, support financial access, and strengthen rural planning.
  • CORS technology and drone surveys are used for accurate spatial mapping.
• Bhuvan: Developed by ISRO, Bhuvan provides access to satellite imagery and geospatial information for different parts of India.
  • It supports development planning, disaster management, environmental monitoring, resource mapping, and other geospatial applications.
• Bharat Maps: A multi-layer GIS platform developed by the National Informatics Centre (NIC) to support e-governance, digital mapping, and location-based infrastructure planning.
• SOI Online Maps and Data Portal: Developed by the Survey of India, it provides access to topographic maps, thematic maps, geospatial datasets, and digital mapping resources.
• Sarthi: A Web GIS platform that provides interactive geospatial tools and visualization capabilities to support spatial analysis and informed decision-making across sectors.
• Gram Manchitra: A GIS-based platform developed by the Ministry of Panchayati Raj to support spatial planning by Panchayati Raj Institutions (PRIs) and strengthen local-level development planning.
• Geospatial Energy Map of India: Developed by NITI Aayog in collaboration with ISRO, it provides GIS-based visualization of India's energy resources and infrastructure.
  • It supports energy-sector planning, policy formulation, infrastructure assessment, and efficient resource management.

UPSC Civil Services Examination, Previous Year Question (PYQ) 

Prelims 

Q.1 In the context of space technology, what is “Bhuvan”, recently in the news? (2010) 

(a) A mini satellite launched by ISRO for promoting the distance education in India 
(b) The name given to the next Moon Impact Probe, for Chandrayaan-II 
(c) A geoportal of ISRO with 3D imaging capabilities of India 
(d) A space telescope developed by India 

Ans: C 

 Mains 

 Q.2 Discuss India’s achievements in the field of Space Science and Technology. How the application of this technology helped India in its socio-economic development? (2016)