Maarg Manthan · Topic 7.9

Deforestation: Tropical and Temperate Forest Loss

Geography › Biogeography: Soils and Vegetation · Topic 7.9

Deforestation is the permanent clearing of forest for other uses, mainly farming, grazing, mining, roads and settlements. The world loses roughly ten million hectares of forest a year to deforestation, with a net loss of several million hectares after new forest growth, and most of it is in the tropics: the Amazon, the Congo basin, South-East Asia and parts of Africa. Temperate forests were mostly cleared centuries ago, and are now stable or expanding in much of Europe, East Asia and North America. Deforestation harms climate, water, soil and biodiversity.

5 min read · UPSC Prelims · Geography · Biogeography: Soils and Vegetation

At a Glance

Global loss About 10 million hectares a year (gross)
Hotspots Amazon, Congo, South-East Asia
Main causes Farming, grazing, logging, fires
Temperate forests Mostly stable or regrowing now
Global pledge End deforestation by 2030 (Glasgow, 2021)
Exam link UPSC Prelims, Geography: Biogeography: Soils and Vegetation

Where Does It Fit?

This topic follows the account of the uses of vegetation and describes what happens when use becomes over-use. It leads directly to the topics on conservation strategies and types of forestry. Previous topic: Economic Utilization of Vegetation Resources. Next topic: Conservation Strategies: Reforestation, Monoculture Plantation, Afforestation.

What Are the Causes of Deforestation?

Cause	Details
Commercial agriculture	Clearing for cattle ranching and soybean farms in the Amazon, and oil palm in Indonesia and Malaysia; the largest driver of tropical deforestation
Subsistence farming and shifting cultivation	Small farmers clear forests for food, in Africa, Asia and Latin America
Logging	Legal and illegal cutting for timber and paper
Fuelwood and charcoal	Mostly in Africa and South Asia
Mining and infrastructure	Roads, dams, mines and towns open up forests
Fire	Set to clear land or caused by drought; large fires in the Amazon, Indonesia, Siberia and Canada
Policy and weak governance	Subsidies, unclear land rights and poor enforcement

How Does Tropical Forest Loss Differ from Temperate Forest Loss?

Tropical: loss is going on now, at a high rate, in forests with the greatest biodiversity and carbon stores. Global monitoring showed that the loss of tropical primary forest, the oldest and richest kind, rose to a record in 2024, largely because of fires linked to drought, after a fall in 2023. The numbers are revised each year, so the latest report of Global Forest Watch or the Food and Agriculture Organization should be checked.
Temperate: large areas of Europe, eastern North America, China and Japan were cleared for farms and cities over centuries. In recent decades, forest area there has been stable or has grown, through regrowth on abandoned farms and planting, though natural old-growth forest is still being lost.
Boreal: the main loss is from logging and increasingly from wildfires and thaw of permafrost in Siberia and Canada.
Soils: tropical forest soils are poor, because nutrients are held in the vegetation, so cleared land loses fertility within a few years, as in Classification of Soils.

What Are the Consequences?

Climate change: cutting and burning forests releases carbon dioxide, and about a tenth or more of global greenhouse gas emissions are linked to land use change. Fewer trees absorb less carbon.
Biodiversity loss: habitat destruction is the main cause of species loss.
Water and rainfall: less transpiration cuts local rainfall, and the Amazon might approach a tipping point of change into savanna if clearing goes on.
Soil erosion and floods: bare slopes lose soil and cause landslides, siltation and floods, as in Mass Movements: Heave, Flow, Slide; Slow, Rapid and Landslide Categories.
Indigenous people: loss of homes, food and culture.
Disease: forest clearance can bring humans closer to wildlife and spread diseases.

What Is Being Done?

Responses include protected areas and Indigenous land rights; payments for avoided deforestation under REDD+ (Reducing Emissions from Deforestation and forest Degradation); the Amazon Fund of Brazil; certification of palm oil and timber; and laws such as the European Union Deforestation Regulation, which bars imports linked to recent forest clearing, though its start has been postponed. At the climate conference at Glasgow in 2021, more than 140 countries, including India in later statements of intent, pledged to stop and reverse forest loss by 2030, though the progress is behind that goal. Forest cover in India is reported in two-yearly surveys, which are described in Categories of Forests in India and Extent of Forest Cover. The ways to rebuild forests are in Conservation Strategies: Reforestation, Monoculture Plantation, Afforestation. As an analytical point, deforestation is driven by the demand for food, fuel and land, so protecting forests means changing economic incentives as well as making rules. Studies also find that forests managed by Indigenous peoples and local communities lose forest more slowly than comparable lands, so securing their land rights is among the most effective and least costly forms of protection.

Why Is This Topic Important?

Climate Link with emissions
Facts Causes and hotspots
Policy REDD+ and Glasgow pledge

What Came Next?

The next topic describes conservation strategies: reforestation, monoculture plantation and afforestation. Next topic: Conservation Strategies: Reforestation, Monoculture Plantation, Afforestation.

Key People and Terms

Deforestation Permanent clearing of forest
Forest degradation Loss of quality without clearing
Primary forest Old, undisturbed forest
REDD+ Payments to cut forest emissions
Shifting cultivation Clear, farm, abandon, repeat
Tipping point Threshold of abrupt change

Exam Corner

Points to Remember

Commercial agriculture is the top driver in the tropics.
Hotspots: Amazon, Congo, Indonesia.
Temperate forests are now stable or expanding.
REDD+ pays for avoided forest loss.
Glasgow pledge: end deforestation by 2030.

Do Not Confuse With

Deforestation and forest degradation Clearing versus lowering quality
Gross and net forest loss All loss versus loss after regrowth
Primary and secondary forest Original versus regrown

Memory Hook

Beef, soy and palm tear the tropics; temperate came back, tropics lack.

Mains Angle

Questions ask for causes, consequences and policy measures. These points add depth.

Drivers Agriculture first
Impacts Climate, water, species
Response Incentives and law

A Question You May Face

An original practice question, not a past paper question.

“Examine the causes and consequences of tropical deforestation and discuss the measures taken at the global level to check it.”

How to Answer

Causes Agriculture, logging, fire.
Contrast Tropical versus temperate.
Impacts Climate and biodiversity.
Measures REDD+, pledges, law.

GS Relevance

Prelims: causes and consequences of deforestation, tropical versus temperate loss, global agreements. GS Paper 1 and 3: environment and climate change.

Frequently Asked Questions

What is deforestation?

Deforestation is the permanent removal of forest and the conversion of the land to other uses such as farming, grazing, mining, roads or settlements. It differs from forest degradation, which is a decline in the quality of the forest without full clearing. The world loses roughly ten million hectares of forest a year to deforestation.

What are the main causes of tropical deforestation?

The main cause is clearing for commercial agriculture, notably cattle ranching and soybeans in the Amazon and oil palm in South-East Asia. Others are subsistence farming, logging, fuelwood collection, mining, roads and dams, and fires, helped by weak laws and unclear land rights.

Why is temperate forest area stable while tropical forest area is falling?

Most temperate forests were cleared centuries ago, and in recent decades, farm abandonment, planting and better management have let forest area stabilise or grow in Europe, North America and East Asia. In the tropics, the demand for farmland and timber is still driving large-scale clearing.

What are the effects of deforestation on climate?

Deforestation releases the carbon stored in trees as carbon dioxide and removes forests that would otherwise absorb it, so it adds to global warming. Fewer trees also mean less transpiration, which can reduce local rainfall, alter weather and make the land hotter and drier.

What is REDD+?

REDD+ stands for Reducing Emissions from Deforestation and forest Degradation, plus conservation, sustainable management and enhancement of forest carbon stocks. It is a United Nations framework under which developing countries receive results-based payments for cutting forest emissions, and helps to put an economic value on keeping forests standing.

PYQ Practice — Statement Analysis

1 Commercial agriculture is the largest driver of tropical deforestation.

True

Cattle, soy and palm oil are leading drivers.

2 Temperate forests are being cleared faster than tropical forests today.

False

Tropical forests lose area faster.

3 REDD+ aims to reduce emissions from forest loss.