Tropical peat accumulation was a primary feature of the Holocene, as well as of thelast glacial period. Peat accumulation in most tropical coastal areas in Southeast Asiacommenced around 4000–5000 BP (Page et al.2006; Anderson and Muller1975).The subcoastal and inland peatlands in Borneo date back to the late Pleistocene(ca. 29,000 BP) (Page et al.2006; Anshari et al.2001, 2004).Tropical peat…