Spatial distribution of N2O flux from agricultural field on tropical peatland, Kalimantan, Indonesia

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Authors: 
Yo Toma, Fumiaki Takakai, Kiwamu Ishikura, Untung Darung, Kanta Kuramochi, Suwido H. Limin4, Ryusuk
Book (published in): 
Proceedings of the 15th International Peat Congress
Venue: 
Kuching
Year: 
2016
Keywords: 
Nitrous oxide, peat soil, agricultural field, soil characteristics, organic matter decomposition

Summary:

SUMMARY

Nitrous oxide (N2O) is one of major greenhouse gases emitted from agricultural field. In drained tropical peatland, significant amount of N2O emission (maximum 698 kg N ha-1 y-1) has been reported from an agricultural field in Palangka Raya, Kalimantan, Indonesia. Due to high organic matter and mineral nitrogen supply by peat decomposition, N2O was mainly produced by denitrification process in rainy season and not mainly from applied nitrogen fertilizer. However, it is unknown whether large amount of N2O emission can be observed from other agricultural fields on drained tropical peatland in the region. In this study, N2O fluxes from 10 agricultural fields...