Describing the distribution of rubber producing countries, indicate the major environmental issues faced by them.
Approach · directive: “describe / indicate”
What it asks · Two parts: where natural rubber is grown and why, and the environmental problems in those producing countries.
The question has 2 parts — answer each
- Describe the distribution of rubber-producing countries and the conditions behind it
- Indicate the major environmental issues those countries face
Open with · Natural rubber comes from the Hevea tree, which is native to the Amazon but is now grown mainly in tropical Asia.
Cover
- Distribution: Asia supplies most natural rubber; Thailand and Indonesia lead, followed by Vietnam, Malaysia, China, India and Sri Lanka; Côte d'Ivoire leads in Africa.
- Conditions: Hevea needs hot, humid weather, rainfall above about 200 cm spread through the year, and well-drained soil, confining it to equatorial and tropical belts.
- Latin America: the tree's native region now has small output because South American leaf blight limits plantations.
- Deforestation: forests and agroforests are cleared for monoculture plantations in Southeast Asia and Africa, threatening habitats and forest carbon stocks.
- Soil and water: monocultures cause erosion and nutrient loss, latex-processing effluents pollute streams, and agrochemicals harm local water sources.
- Climate and disease: changing rainfall and heat and fungal leaf diseases cut yields, while volatile prices press smallholders to expand into forests and uplands.
Close with · Rubber's economic value must be balanced with forest protection through certified, agroforestry-based and higher-yield smallholder systems.
Question: UPSC's CS (Main) 2022, GS Paper I — paper ↗. Approach: Minimalist IAS, checked 30 Sept 2026 (how we verify) — UPSC publishes no model answers. ·
Model answer · 292 words (UPSC limit 250) · Minimalist IAS
Natural rubber is tapped from the latex of Hevea brasiliensis, a tree native to the Amazon basin that is now grown almost entirely in the humid tropics of Asia.
Distribution of producing countries
- Conditions: constant heat, rainfall above about 200 cm spread through the year, high humidity and deep, well-drained soil confine the crop to a belt close to the equator.
- Southeast Asia: Thailand and Indonesia are the two largest producers, followed by Vietnam and Malaysia; Cambodia, Myanmar and Laos are expanding.
- South Asia and China: India (Kerala and Tripura), Sri Lanka and southern China (Hainan and Yunnan) grow rubber.
- Africa: Cote d'Ivoire leads, with Liberia, Nigeria and Cameroon.
- Latin America: the native region contributes little because South American leaf blight prevents dense plantations; Brazil and Guatemala grow limited quantities.
- Smallholders dominate output in Thailand, Indonesia and India, so prices shape land-use decisions directly.
Environmental issues
- Deforestation and biodiversity loss: forests, peatlands and agroforests are converted to monoculture in mainland Southeast Asia, south-west China and West Africa, shrinking habitats of elephants and primates and releasing stored carbon.
- Soil and water: monoculture on slopes erodes soil and drains nutrients; rubber's heavy water uptake lowers water tables and dry-season streamflow.
- Pollution: latex-processing effluents, high in ammonia and organic load, foul streams; fertiliser and herbicide runoff adds to it.
- Climate and disease: erratic rainfall, heat and storms cut yields, and fungal leaf diseases have spread through Asian plantations.
- Price volatility pushes smallholders to expand into forests and uplands or to abandon good practice.
- Responses: agroforestry, higher-yield clones on existing land, certification of deforestation-free rubber and effluent treatment.
Rubber sustains smallholder livelihoods across the tropics at rising ecological cost; certified, agroforestry-based and higher-yield cultivation is the way to keep both the trees and the forests standing.
Written by Minimalist IAS from facts checked at source (how we verify) — a little fuller than exam length, so every part of the question is covered; in the hall, keep the structure and trim the detail. UPSC publishes no model answers: compare your structure and coverage with this, then write your own.