# Why are rainforests important?

> Rainforests store carbon, regulate regional rainfall, harbour roughly half of known terrestrial species and support indigenous communities. Tropical deforestation releases greenhouse gases and drives orangutan, tiger and pangolin declines. Tropical rainforests transpire moisture feeding regional rainfall — Amazon, Congo and Southeast Asian forests act as planetary air conditioners.

**Category:** Habitat  ·  **Updated:** 2026-07-05

## Key takeaways
- Climate regulation and carbon storage globally critical.
- Roughly half terrestrial species depend on rainforests.
- Palm oil, cattle, logging drive tropical clearing.
- Indigenous land rights correlate with lower deforestation.
- Orangutan, pangolin, parrot — WARN rainforest species.
- Habitat appeal funds partner forest protection.

## Answer
The Amazon, Congo Basin and Southeast Asian forests act as planetary air conditioners — transpiring moisture that falls as rain hundreds of kilometres away. Clearing forest disrupts that cycle.

A single hectare of tropical rainforest may hold hundreds of tree species and thousands of insect species. Many medicines and crops originate from forest biodiversity.

WARN’s rainforest hub links species guides (orangutan, pangolin, parrot) with habitat appeals. Palm oil, cattle ranching, logging and mining are the main conversion drivers — consumer and policy choices matter alongside field work.

## Climate and water cycles
Trees transpire water vapour — flying rivers carry moisture inland hundreds of kilometres from Amazon coast. Clearing reduces rainfall downwind — agricultural drought follows forest loss in causal studies. Carbon in biomass and soil releases CO₂ when burned or rotted — Indonesia peat fires among largest emission spikes globally. Rainforests cool locally through shade and evapotranspiration — heat island effect replaces forest with pasture. Climate policy increasingly funds REDD+ avoided deforestation — effectiveness debated but scale acknowledges forest climate role.

## Biodiversity hotspots
Single hectare Ecuador or Borneo may contain hundreds of tree species versus handful in temperate forest. Co-evolution produces specialist pollinators — fig wasps, orchid bees. Loss of one tree species cascades to dependent insects and birds. Endemism high on islands and mountains — Madagascar, Philippines, Western Ghats. Extinction rates accelerate as fragments shrink — empty forest still looks green but loses apex species first.

## People and indigenous rights
Indigenous territories overlap much intact forest — evidence shows lower deforestation where land rights recognised. Excluding communities fails long term — partnerships with forest peoples outperform fortress conservation without local buy-in. Commercial drivers still pressure — illegal logging, mining, land grabs. WARN does not substitute for indigenous leadership — partner programmes respect local governance where present.

## WARN rainforest connections
Rainforest animals hub links orangutan, pangolin and parrot guides — species losing habitat to palm and pulp expansion. Orangutan appeal and habitat appeal channel gifts to verified partners in Kalimantan and Sumatra documented in newsroom releases. Consumer choices on palm oil certified RSPO imperfect but directionally reduce pressure — policy banning import deforestation products stronger still. Rainforest importance is not abstract — maps to named species and appeals donors can trace.

## FAQ
### Why are rainforests important?
Carbon storage, rainfall regulation, biodiversity and livelihoods — global climate and species support.

### What threatens rainforests?
Palm oil, cattle ranching, logging, mining, roads — agricultural conversion dominant in tropics.

### How do rainforests affect climate?
Store carbon; transpiration drives rainfall; clearing releases CO₂ and reduces regional rain.

### Why are orangutans endangered?
Rainforest loss to palm oil and logging — see dedicated answer.

### Can rainforests recover?
Secondary forest regrows but loses species — full recovery takes centuries or fails for specialists.

### How can I help rainforests?
Fund verified habitat partners; reduce deforestation-linked products; support indigenous land rights.

## Sources
- [WWF — rainforest facts](https://www.worldwildlife.org)

Human-readable page: https://worldanimalrescuenetwork.org/answers/why-are-rainforests-important