Discuss the consequences of climate change on the food security in tropical countries.

Availability of food

• Higher night temperatures and heatwaves reduce yields of rice and maize in large parts of South Asia, sub-Saharan Africa, and tropical Latin America.
• Rainfall becomes more erratic, so drought in the Sahel or the Indian drylands and floods in Bangladesh or the Mekong destroy standing crops in the same decade.
• Mountain ice loss in the Andes and the Himalaya threatens dry-season irrigation that tropical farmers use for a second crop.
• Warm seas bleach coral and shift fish, which cuts protein for coastal communities from the Pacific islands to the Bay of Bengal.

Access, utilisation, and stability

• Crop failure raises local prices, so the poor in tropical cities spend more of their wage on grain even when global stocks exist.
• Pests such as locusts and fall armyworm spread in warmer weather, which raises the cost of protection for smallholders.
• Heat and humidity increase food spoilage and water-borne disease, so calories on the plate do not become nutrition in the body.
• Small island and least-developed tropical states have thin storage, insurance, and trade buffers, so one cyclone can create a food emergency.

Who is hit hardest

• Women farmers, rainfed households, and pastoralists have the least irrigation, credit, and land title, so they absorb the first shock.
• Export plantations may still ship coffee or cocoa while local staple plots fail, which splits national accounts from household hunger.

Way forward

• Expand heat-tolerant and short-duration varieties through public research such as IRRI and national systems like ICAR.
• Combine irrigation, crop insurance, and social grain stocks so access does not collapse when the monsoon fails.
• Protect mangroves, soils, and small fisheries because they are food systems, not only environmental extras.