Tropical rainforests: relationships and land-use change
Connect climate, vegetation and soils, then compare the causes and consequences of forest conversion.
Explain a rainforest system
Warm, moist conditions can support rapid plant growth and decomposition. Dense vegetation stores nutrients and carbon; roots take up released nutrients. Heavy rainfall can leach exposed soils.
Canopy structure, leaf form and roots reflect competition for light and access to water and nutrients. Adaptations vary among species.
Worked example
Fictional stores contain 80 nutrient units in biomass, 10 in litter and 10 in soil. Biomass holds 80% of the total, so removing trees also removes much of the system’s stored nutrients.
Common mistake: Dense vegetation does not prove that exposed soil stays fertile.
Trace causes at several scales
Household land needs, commercial crops, logging, roads and extractive development can interact. Roads may enable access, while demand and institutions influence whether conversion follows.
A satellite image records land cover in its footprint. Attributing change requires evidence of actors, timing and decisions.
Worked example
A fictional 1,000 ha forest loses 60 ha in year one and 40 ha in year two. The two-year loss is 10% of the original area, while the annual loss amount fell.
Common mistake: A falling loss rate does not mean no forest is being lost.
Judge management outcomes
Conservation, selective harvesting, restoration and alternative livelihoods address different pressures. Sustainable management needs evidence of ecological condition and social outcomes over time.
Protection can shift conversion outside its boundary. Replanting can differ from conserving an old forest in biodiversity, structure and carbon.
Worked example
Fictional forest loss falls by 30 ha inside a protected area but rises by 20 ha outside it. Net avoided loss across this combined area is 10 ha, assuming a justified baseline.
Common mistake: A protected-area result should not be assigned to the whole region.
Try a different resource
Percentage change
The starting year is the denominator. A negative percentage indicates a decrease.
| Year | Visitors |
|---|---|
| 2020 | 2300 |
| 2025 | 2530 |
Resource description
Fictional nature reserve annual visits
Write an explanation
Check your answer
- Explain the pressure each strategy addresses.
- Use dated regional evidence.
- Consider benefits and costs for different groups.
- Examine displacement and the time needed for recovery.
Practise and review a written answer
Case studies
Amazon forest conversion · Forest and plantations in Kalimantan · Costa Rica’s forest carbon payments
These pages provide selected evidence. Check the whole case requirement with your teacher.
Read further
- www.aqa.org.uk — source or course reference
- www.aqa.org.uk — source or course reference
- qualifications.pearson.com — source or course reference
- www.sqa.org.uk — source or course reference
- www.sqa.org.uk — source or course reference
- qualifications.pearson.com — source or course reference
- www.ocr.org.uk — source or course reference
- www.ocr.org.uk — source or course reference
- www.eduqas.co.uk — source or course reference
Forest conversion and distant demand · Ecosystem interdependence · Global value chains
Course links
AQA GCSE Geography · Pearson Edexcel GCSE Geography B · National 5 Geography · Higher Geography · Pearson Edexcel GCSE Geography A · OCR GCSE Geography A · OCR GCSE Geography B · Eduqas GCSE Geography A
Next topics
Development: indicators, change and inequality · Globalisation: flows, value capture and dependence
Selected teaching sequence with fictional worked data. The linked case records supply bounded evidence; they do not satisfy every course case requirement.
Scottish links identify reusable parts of the topic. Scottish landforms, soil, weather and disease requirements need additional course-specific teaching.