The Forest Inventory and Analysis (FIA) program conducted a systematic inventory of the forests of Kosrae, Chuuk, Pohnpei, and Yap in the Federated States of Micronesia (FSM) in 2005 and 2006. Seventy-three permanent field plots were installed in a variety of forest types. Our estimates for this inventory are derived from a sample based on 161,917 acres on the four main islands in the FSM.

Map of Micronesia

  • Forest covers about 89 percent of the FSM.
  • About 3 percent of the landscape was classified as urban land.
  • Gross tree stem volume was about 609 million cubic feet for all size classes.
  • Aboveground dry biomass for tree stems 5 inches and greater was estimated to be about 9.2 million tons.
  • Approximately 11 percent of trees sampled showed some sign of damage, particularly by other vegetation and human disturbance.
  • FSM’s forests are characterized by a wide range of tree diameters with relatively high species diversity compared to other Pacific Islands.
    • 96 tree species and 206 understory species were measured on FIA plots.
    • The average number of tree species per one-sixth-acre plot was seven.