Q. Describing the distribution of rubber producing countries, indicate the major environmental issues faced by them.

Model Answer:

Natural rubber (Hevea brasiliensis) thrives in hot, humid equatorial climates. Its commercial cultivation is highly geographically concentrated, driving global supply chains but triggering severe ecological crises.

Global Distribution of Rubber Producing Countries

• Southeast Asian Dominance: Thailand, Indonesia, and Malaysia dictate the global market, producing over 70% of natural rubber.
• Greater Mekong Expansion: Rapid plantation growth is shifting agrarian frontiers deep into Cambodia, Laos, and Myanmar.
• South Asian Belt: Traditional, well-established estates thrive in India (Kerala, Tripura) and Sri Lanka.
• African Emergence: Ivory Coast and Nigeria are fast-growing hubs capitalizing on favorable equatorial conditions.
• Native Latin America: Brazil (Amazon basin) produces marginally due to the endemic South American Leaf Blight disease.

Major Environmental Issues Faced

• Tropical Deforestation: Unregulated clearing of pristine rainforests destroys critical global carbon sinks (Greater Mekong Subregion).
• Biodiversity Decimation: Monoculture practices eliminate endemic habitats, threatening apex and endangered species (Sumatran Orangutans, Indonesia).
• Peatland Fires: Draining carbon-rich tropical peatlands for plantations sparks massive, recurring transboundary toxic hazes (Malaysia, Indonesia).
• Groundwater Depletion: Deep-rooted Hevea trees exhibit high evapotranspiration rates, severely stressing local hydrology and aquifers (Tripura, India).
• Topsoil Erosion: Clearance of native undergrowth exposes fragile tropical laterite soils to severe monsoon runoff.
• Agrochemical Runoff: Heavy reliance on synthetic fertilizers and fungicides causes severe eutrophication in local watersheds.
• Micro-climate Disruption: Forest canopy replacement alters local hydrological cycles, increasing the frequency of regional droughts.
• Pathogenic Vulnerability: Genetic uniformity in monocultures accelerates the rapid spread of invasive diseases (Pestalotiopsis leaf fall).

Balancing economic utility with ecology requires transitioning to polyculture agroforestry and enforcing strict compliance with the Global Platform for Sustainable Natural Rubber (GPSNR) guidelines.