sites Location and type of previously sampled, active study sites and Data Exchange Network (DEN) sites in global peatlands. Active study sites: A–Alder swamp forest, B–Drained birch swamp forest, C–Fen grassland, D–Arable field, E–Swamp forest, F–Palm swamp forest, G–Swamp forest+grassland, H–Arable field+grassland, I–Arable field+grassland, J–Agroforestry site, K–Oil palm plantation.
Feature 2