The Luang Prabang montane rain forests ecoregion (WWF ID: IM0121) covers elevations over 800 meters in the Luang Prabang mountains that straddle the border between northern Thailand and north-central Laos, and the highlands that stretch eastward across north-central Laos.

dry forests covers the lower-elevation Khorat Plateau to the south and the Chao Phraya lowlands to the west.

[2] Starting at 800 meters elevation, the lower tropical seasonal rainforest becomes the montane rainforest, with a dominant canopy of Dipterocarpus turbinatus (source of keruing wood), and Wax tree (Toxicodendron succedaneum).

At elevations of 1,500 meters, broadleaf evergreen forests of Castanopsis hystrix are found.

The low, open nature of the forest may be due to past clearing or fire.