Floristic Composition of Peat Swamp Forest in Mensemat-Sambas, West Kalimantan

The floristic composition of a 1.05 ha (70 m by 150 m) plot in an old-growth peat swamp forest was studied at Mensemat, Sambas Regency, West Kalimantan. Number of species and density of trees with more than 10 cm in diameter was 86 species and 698 trees/ha, while small tree of 2-10 cm in diameter was 100 species and 5043 trees/ha, respectively. The most abundant trees were Blumeodendron elatriospermum (47 trees/ha), Cyatocalyx biovulatus (39 trees/ha), Blumeodendron tokbrai (32 trees/ha), Lithocarpus encleisacarpus (30 trees/ha) and Syzygium chlorantha (30 trees/ha) with greater number of individual at smaller diameter classes. The most diverse families are Euphorbiaceae, Annonaceae and Dipterocarpaceae represented mostly by small-sized trees ranging between diameter 2-30 cm and rarely exceeding dbh 60 cm. Proceedings of the International Symposium on TROPICAL PEATLANDS. Bogor, 22-23 November 1999. Hal. 153-164