Edexcel GCSE Geography B (1GB0) — Forests Under Threat
You might assume that forests are disappearing evenly across the globe, but while some countries lose an area of forest the size of a football pitch every second, others are actually getting greener. This unequal distribution is known as spatial variation.
The ingredients in your kitchen cupboards directly influence the shape of the world's forests. Most global clearance is classified as commodity-driven deforestation, where large-scale agriculture is developed specifically for global export rather than local survival.
Cutting down trees is rarely the end goal; it is usually the first step toward economic development or population management. These socio-economic factors act as powerful underlying drivers for clearance.
A stroke of a politician's pen can protect millions of trees or condemn them to the chainsaw. Government policy plays a huge role in dictating the rate at which deforestation occurs.
When the trees vanish, the soil beneath them is left starving. The removal of the vegetation directly destroys the ecosystem's main biomass store.
Geographers use mathematical formulas to track how fast forests are disappearing over time.
A rapidly developing nation had a total forest cover of at the beginning of 2022. By the end of the year, satellite imagery revealed that had been cleared for agricultural use. Calculate the annual deforestation rate for 2022.
Step 1: Identify the starting values.
Step 2: Substitute the values into the formula.
Step 3: Perform the calculation to find the percentage.
The annual deforestation rate for that year was .
Students frequently confuse direct threats with indirect threats. Remember that commercial logging is a direct threat (deliberate clearance), while climate change causing droughts is an indirect threat.
When answering 8-mark 'Analyze' questions about spatial variations, explicitly contrast the exploitation phase of NEEs (like Brazil and Indonesia) with the conservation/afforestation phases of HICs.
Use high-level terminology to secure top marks: write 'commodity-driven deforestation' instead of just 'farming' when discussing exports like palm oil, soy, or beef.
If asked to explain why road building increases deforestation, remember the multiplier effect: roads don't just clear trees directly, they provide vital access for heavy logging machinery and allow products to be transported to global markets.
Spatial variation
The differences in geographic patterns and rates of a phenomenon, such as deforestation, across different locations or regions.
Deforestation
The permanent and large-scale removal or clearance of trees for non-forest land use, such as agriculture or urbanisation.
Afforestation
The process of deliberately planting trees on land that has not recently been covered by forest.
Kuznets Curve
An economic model suggesting that as a country develops, environmental degradation initially increases but eventually decreases once a certain level of wealth is reached.
Commodity-driven deforestation
The large-scale clearance of forest land specifically to produce agricultural goods (like beef, soy, or palm oil) for global export.
Direct threat
Deliberate human actions that immediately clear or harm the forest, such as logging, mining, or commercial farming.
Commercial cattle ranching
The large-scale rearing of livestock for meat and leather to be sold in global markets; the primary driver of deforestation in the Amazon.
Primary forest
Native, old-growth forest that has reached great age without significant human disturbance, containing high biodiversity.
Commercial logging
The felling of trees for profit, typically targeting high-value hardwoods or softwood for timber and paper.
Clear felling
A highly destructive logging practice where all trees in a selected area are cut down simultaneously.
Selective logging
A sustainable forestry technique where only specific, mature, or high-value trees are removed, leaving the wider ecosystem intact.
Secondary forest
Forest that has re-grown after a major disturbance like clear felling or fire; it typically has much lower biodiversity than original old-growth forest.
Transmigration
A government policy used in countries like Indonesia to move poor urban populations into rural forested areas to create new settlements.
Indirect threat
Factors that harm the forest as a secondary consequence of human activity or environmental changes, such as climate change causing increased wildfires.
Government policy
National plans, laws, or regulations created by leaders that either encourage resource exploitation or promote environmental conservation.
Sustainability
Meeting the economic and social needs of the current population without compromising the ability of future generations to meet their own needs.
Leaching
The process where heavy rainfall washes vital soil nutrients deep underground, beyond the reach of plant roots, often accelerated by the removal of forest canopy.
Net Primary Productivity (NPP)
A measure of how much new plant biomass is created in an ecosystem over a year, usually measured in kg/m²/yr.
Put your knowledge into practice — try past paper questions for Geography B
Spatial variation
The differences in geographic patterns and rates of a phenomenon, such as deforestation, across different locations or regions.
Deforestation
The permanent and large-scale removal or clearance of trees for non-forest land use, such as agriculture or urbanisation.
Afforestation
The process of deliberately planting trees on land that has not recently been covered by forest.
Kuznets Curve
An economic model suggesting that as a country develops, environmental degradation initially increases but eventually decreases once a certain level of wealth is reached.
Commodity-driven deforestation
The large-scale clearance of forest land specifically to produce agricultural goods (like beef, soy, or palm oil) for global export.
Direct threat
Deliberate human actions that immediately clear or harm the forest, such as logging, mining, or commercial farming.
Commercial cattle ranching
The large-scale rearing of livestock for meat and leather to be sold in global markets; the primary driver of deforestation in the Amazon.
Primary forest
Native, old-growth forest that has reached great age without significant human disturbance, containing high biodiversity.
Commercial logging
The felling of trees for profit, typically targeting high-value hardwoods or softwood for timber and paper.
Clear felling
A highly destructive logging practice where all trees in a selected area are cut down simultaneously.
Selective logging
A sustainable forestry technique where only specific, mature, or high-value trees are removed, leaving the wider ecosystem intact.
Secondary forest
Forest that has re-grown after a major disturbance like clear felling or fire; it typically has much lower biodiversity than original old-growth forest.
Transmigration
A government policy used in countries like Indonesia to move poor urban populations into rural forested areas to create new settlements.
Indirect threat
Factors that harm the forest as a secondary consequence of human activity or environmental changes, such as climate change causing increased wildfires.
Government policy
National plans, laws, or regulations created by leaders that either encourage resource exploitation or promote environmental conservation.
Sustainability
Meeting the economic and social needs of the current population without compromising the ability of future generations to meet their own needs.
Leaching
The process where heavy rainfall washes vital soil nutrients deep underground, beyond the reach of plant roots, often accelerated by the removal of forest canopy.
Net Primary Productivity (NPP)
A measure of how much new plant biomass is created in an ecosystem over a year, usually measured in kg/m²/yr.
