Notes of Dipterocarpus Gaertn. f. (1788) Species at Mentatai Resort Nanga Pinoh Region 1 National Park Management Section Bukit Baka Bukit Raya National Park

Resort Mentatai is one of the six resorts of Bukit Baka Bukit Raya National Park that make up the Heart of Borneo. The Management Section of Mentatai resort in Nanga Pinoh Region I Bukit Baka Bukit Raya National Park is a place for monitoring and releasing of orangutans. The Dipterocarpaceae ecosystem in Bukit Baka Bukit Raya National Park has decreased from 46% to 33% for the period 2009 to 2017. This research aims to find out the species of Dipterocarpus found in the Mentatai resort area. The research was conducted for 3 months from October to December 2019 using the cruise method. The results were obtained 3 Dipterocarpus Gaertn. f., species such as Dipterocarpus oblongifolius Bl., Dipterocarpus gracilis Bl., and Dipterocarpus pachyphyllus Meijer.