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

Distribution of producing countries

• Thailand, Indonesia, and Vietnam are the leading Asian producers, with Malaysia still important though it has shifted some land to oil palm.
• India grows plantation rubber in Kerala’s midlands and in parts of the north-east and Andaman belt, a smaller but regionally dense share.
• China has expanded in Yunnan and on Hainan, often at the climatic edge of the tree.
• West Africa, especially Côte d’Ivoire and others on the Guinea coast, is a growing African pole.
• Latin America, the plant’s home, is a smaller exporter today because of South American leaf blight and later plantation geography.
• The belt is wet equatorial and monsoon margins, roughly within the tropics, because Hevea needs rain, heat, and a dry tap season that is not a true temperate winter.

Forest and biodiversity issues

• Conversion of lowland rainforest to rubber, especially in mainland South-East Asia and on Indonesian islands, cuts habitat for elephants, hornbills, and other forest species.
• Monoculture blocks are biological deserts compared with mixed dipterocarp forest, even when the crop is a tree.
• Expansion into montane and seasonal forests, as in parts of the Mekong uplands, fragments corridors and raises landslide risk on steep grades.

Soil, water, chemicals, and climate

• Clean-weeded slopes erode; laterite and poor tropical soils lose organic matter under repeated tapping landscapes.
• Pesticides, fertilisers, and mill effluent pollute streams that village fisheries still use.
• Smoke-houses and processing can add local air and water loads around factory towns.
• Climate change shifts the rain window and raises disease pressure, while producers also face the irony that rubber replaced forest that stored more carbon.
• Labour and land conflicts sit beside ecology: smallholders may over-tap, and concessions may ignore customary forest.

A fair close on distribution and harm

• The environmental issue is not the tree in a home garden; it is landscape-scale replacement of rainforest by one industrial species across the equatorial producing states.