Discuss the consequences of climate change on the food security in tropical countries.
Approach · directive: “discuss”
What it asks · Discuss how warming, erratic rainfall and extreme events affect the four pillars of food security (availability, access, utilisation, stability) in the tropics.
It asks 2 things — answer each
- Discuss: consequences for food availability in tropical countries (crop yields, pests, water, livestock, fisheries)
- Discuss: consequences for access, utilisation and stability (prices, incomes, nutrition, repeated shocks), with a way forward
Open with · The IPCC's Sixth Assessment Report (WGII) finds, with high confidence, that climate change will increasingly pressure food production and access in vulnerable regions; agrarian, rain-fed tropical countries face this first.
Cover
- Availability: heat and erratic monsoons cut yields; PIB (2024): rainfed rice may fall 20% by 2050 and 47% by 2080 without adaptation.
- Wheat may fall 19.3% by 2050 and kharif maize 18–23%; pests spread, salinity and erratic flows weaken irrigation, fish catch shrinks.
- Access: failed harvests raise prices and cut farm incomes together; export curbs spread the shock.
- Utilisation: floods and heat foul water and sanitation, spreading diarrhoea and child undernutrition.
- Stability: droughts, floods, heatwaves and sea-level rise recur; India has 109 very highly vulnerable districts.
- Way forward: tolerant seeds, micro-irrigation, insurance, advisories, millets and grain reserves.
Close with · With 645 million people facing hunger in 2025 (FAO), adapting tropical farms is now the shortest route to SDG 2 (end hunger).
Add value (verified)
- NICRA-based modelling (PIB, 26 July 2024): without adaptation, rainfed rice yields may fall 20% (2050) and 47% (2080); wheat 19.3% (2050) and 40% (2080); kharif maize 18–23%.Climate change impact on agriculture, PIB (Ministry of Agriculture), 2024 ↗“in the absence of adoption of adaptation measures, climate change projections are likely to reduce rainfed rice yields by 20% in 2050 and 47% in 2080 scenarios while, irrigated rice yields by 3.5% in 2050 and 5% in 2080 scenarios, wheat yield by 19.3% in 2050 and 40% in 2080 scenarios”
- Of 573 predominantly agricultural districts assessed under IPCC protocols, 109 are very highly and 201 highly vulnerable to climate change.Climate change impact on agriculture, PIB (Ministry of Agriculture), 2024 ↗“A total of 109 districts are categorized as ‘very highly’ and 201 districts as ‘highly’ vulnerable.”
- IPCC AR6 WGII (B.4.3): climate change will increasingly pressure food production and access in vulnerable regions (high confidence).IPCC AR6 Working Group II, Summary for Policymakers ↗“Climate change will increasingly put pressure on food production and access, especially in vulnerable regions, undermining food security and nutrition”
- FAO SOFI: an estimated 645 million people faced hunger in 2025.The State of Food Security and Nutrition in the World, FAO ↗“It is estimated that 645 million people faced hunger in 2025.”
Question: UPSC's CS (Main) 2023, GS Paper I — paper ↗. Approach: Minimalist IAS, checked 16 Oct 2026 (how we verify) — UPSC publishes no model answers. ·
Model answer· 228words · Minimalist IAS
The IPCC's Sixth Assessment Report (WGII) finds, with high confidence, that climate change will increasingly pressure food production and access in vulnerable regions. Agrarian, rain-fed tropical countries, already farming near crops' heat limits, feel this first, across all four pillars of food security.
- Warming, erratic rain
- Lower yields
- Dearer food
- Poor eat less
- Undernutrition
Availability: less food grown
- Yield loss: without adaptation, Indian projections show rainfed rice yields falling 20% by 2050 and 47% by 2080, and wheat 19.3% by 2050 (PIB, 2024).
- Pests and water: warmer, wetter spells spread pests, while coastal salinity and erratic river flows weaken irrigation.
- Livestock and fisheries: heat stress lowers milk output; warming seas and coral loss shrink the fish catch of the coastal poor.
Access: dearer food
- Price and income shocks: failed harvests raise prices and cut farm wages together; export curbs carry the shock across borders.
Utilisation: weaker nutrition
- Health link: floods and heat foul water and sanitation, spreading diarrhoea and child undernutrition.
Stability: repeated shocks
- Hotspots: India alone has 109 'very highly' and 201 'highly' vulnerable districts; back-to-back disasters erode household savings and grain buffers.
Way forward
- Climate-smart farming: heat- and flood-tolerant varieties, micro-irrigation, crop insurance, weather advisories, millets and adequate grain reserves.
Since then, FAO has estimated that 645 million people faced hunger in 2025; adapting tropical farms is now the shortest route to SDG 2 (end hunger).
Prepared by Minimalist IAS to the answer standard of Shivam Singh (mentor, 7 years) · facts checked against official sources (how we verify) · updated 16 Oct 2026. UPSC publishes no model answers: compare your structure and coverage with this, then write your own.
