Gandois L., Cobb A.R. Chieng Hei I., Lim L., Kamariah A.S., C. F. Harvey
Proceedings of the 14th International Peat Congress
dissolved-organic-carbon-doc, logging, nitrogen, tropical-peatland
Theme IX. Tropical peatlands
This study investigated solid and dissolved organic matter elemental, molecular and spectroscopic properties in a pristine and logged over tropical peat forest of Brunei. In the deforested site, dissolved organic carbon (DOC) concentration in the pore water increased significantly compared to the pristine site (from 62.2±2.2 mg.l-1 to 79.9±5.5 mg.l-1), and its composition was modified: increase of nitrogen content and modification of optic properties (fluorescence index). Logging exploitation of the peat dome also greatly modified organic matter properties and composition: modification of phenolic, as well as sulphur and nitrogen content in the surface soil were observed in the deforested site, indicating an enhanced decomposition following logging exploitation.