How Many Rainforests in Indonesia? More Than Five Major Ecosystems

Indonesia hosts more than five major rainforest ecosystems, each with unique biodiversity:

• Sumatra: Leuser Ecosystem
• Kalimantan: Kayan Mentarang National Park
• South Kalimantan: Meratus Mountains
• Papua (Western New Guinea): Lorentz Forest, Mamberamo Forest, Cyclops Mountains, Foja Mountains (peat swamp)
• Sulawesi: Lore Lindu National Park (Lake Poso), Tangkoko‑Batuangus‑DuaSudara Reserve

These forests are among the most biologically rich on Earth but face severe threats from logging, palm oil expansion, and mining.