Seasonal and interannual variations of dissolved organic matter composition in the groundwater of tropical peat under oil palm plantation management

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Nagamitsu Maie, Lulie Melling, Sonoko D. Bellingrath-Kimura, Kosuke Ikeya, Eikichi Shima, Hajime Tanji, Zulhilmy Abdullah Mohd and Akira Watanabe
Book (published in): 
Proceedings of the 15th International Peat Congress
organic matter, soils, peatland




Dissolved organic matter (DOM) is the most reactive fraction of natural organic matter, of which composition reflects its source and biogeochemical processes. As such, compositional information of DOM can serve as a useful clue to better understand its surrounding environments. In this study, a longterm monitoring of DOM composition in groundwater of tropical peat (TP) under oil palm plantation (OPP) was conducted to better understand the environmental change of. Monitoring sites are located in an OPP in Sarawak, Malaysia. Twelve sampling wells were installed across the OPP and groundwater samples were collected once a month over 5 years. Dissolved organic carbon (DOC) concentrations and UVvisible spectra were measured to calculate specific UV absorption...