Academic journal article Borneo Research Bulletin

Bulletin of the Forestry and Forest Products Research Institute: Patterns of Slash-and-Burn Land Use and Their Effects on Forest Succession-Swidden-Land Forests in Borneo

Academic journal article Borneo Research Bulletin

Bulletin of the Forestry and Forest Products Research Institute: Patterns of Slash-and-Burn Land Use and Their Effects on Forest Succession-Swidden-Land Forests in Borneo

Article excerpt

To evaluate the impact of increased numbers of pyrophytic tree species on succession and the role of pyrophytic tree stands as carbon sinks and reservoirs, the floristic composition and bioeconomics of swidden-land forests were studied in lowland and lower montane Borneo. For our survey of stand floristic composition, 218 secondary forests were chosen in 4 regions including 2 remote areas; most forests were fallowed stands. In 2 of these forests, stand biomass was estimated. The floristic composition of swidden-land forests was characterized by a lack or low density of dipterocarps and the successional ascendance of pyrophytic tree species less vulnerable to felling and fire and with high sprouting capacity such as Schima wallichii, Vitex pinnata, Peronema canescens, and Vernonia arborea. In remote areas, pioneer trees with fruiting and functioning seed dispersal mechanisms were also dominant. Dipterocarps other than Shorea balangeran were not found or were sparse in the fallowed land, which resulted from swidden agriculture, although dipterocarps were the most dominant species in the original vegetation of lowland and lower montane Borneo. …

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