Introduction
Human-induced land use and land cover change (LULCC) represents a major driver of ecological and geomorphic transformation in India. According to the Ministry of Agriculture and Farmers Welfare, land devoted to non-agricultural use has increased to approximately 9.1% of India's Total Geographical Area (TGA). Concurrently, ISRO's Desertification and Land Degradation Atlas reports that nearly 29.7% of the country's TGA (about 97.85 million hectares) is undergoing land degradation, predominantly catalyzed by intensive anthropogenic activities.
Major Human-Induced Drivers of Land Use Change
Human activities have rapidly modified the Indian landscape across both rural and urban domains:
- Linear Infrastructure Development: The proliferation of highways, expressways (e.g., under the Bharatmala Pariyojana), rail corridors, and power transmission grids dissects contiguous forest ecosystems, creating severe ecological fragmentation and the 'barrier effect.'
- Opencast Mining and Quarrying: Concentrated in mineral-rich tracts such as the Chhota Nagpur Plateau and the Gondwana belt (Jharkhand, Odisha, and Chhattisgarh), extensive open-pit mining strips away topsoil and vegetation, transforming undulating terrain into barren overburden dumps.
- Rapid Urbanization and Peri-Urban Expansion: Unplanned rural-to-urban migration converts productive agrarian belts and wetlands into impermeable concrete surfaces, visible along corridors like Delhi-NCR and the Bengaluru metropolitan region.
- Agricultural Shifts and Plantation Monocultures: The clearing of native mixed forests and pastoral commons for commercial plantations (such as rubber and tea in the Western Ghats, or oil palm in the Northeast) fundamentally replaces multi-tier natural vegetation with simplified ecosystems.
- Renewable Energy Megaprojects: Massive utility-scale solar and wind installations in arid and semi-arid tracts (such as Bhadla in Rajasthan and Khavda in Gujarat) require extensive contiguous land parcels, leading to the diversion of fragile dryland commons and grasslands.
Spatial Variation and Geographical Consequences
The nature of land use modification varies across physiographic zones, producing pronounced geographical impacts:
- Soil Salinization and Alkalization: In the intensive agrarian belts of the Indo-Gangetic Plains (notably Punjab and Haryana), prolonged surface flood-irrigation and intensive tube-well usage raise the water table, triggering capillary action that leaves toxic mineral salts on the surface crust.
- Microclimatic Alteration and Urban Heat Islands (UHI): The replacement of vegetative cover and natural water bodies with high-thermal-mass materials like asphalt and concrete creates distinct heat pockets, significantly elevating ambient night-time temperatures in urban sprawls.
- Slope Destabilization and Mass Wasting: In the young fold mountains of the Himalayas and the steep escarpments of the Western Ghats, slope cutting for tourism infrastructure, widening roads, and hydropower tunnelling increases shear stress, culminating in catastrophic landslides and land subsidence.
- Accelerated Wind and Water Erosion: Overgrazing and deforestation in the semi-arid western margins strip organic vegetative binders, exposing friable topsoil to wind erosion and facilitating the advance of desert-like conditions.
- Disrupted Coastal Hydrology: Converting coastal mangroves and deltaic marshes into brackish-water aquaculture ponds and port infrastructure compromises natural buffers, elevating inland vulnerability to cyclonic storm surges and saline intrusion.
Conclusion
Reconciling economic growth with ecological equilibrium requires a decisive shift toward scientific agro-ecological zoning and integrated spatial planning. Operationalizing a comprehensive National Land Use Policy, complemented by high-resolution geospatial monitoring through platforms like ISRO's Bhuvan, is imperative for India to realize its commitment to Land Degradation Neutrality (LDN) by 2030.