CO 2 emissions from tropical drained peat in Sumatra, Indonesia

Husnain Husnain (), I. Wigena (), Ai Dariah (), Setiari Marwanto (), Prihasto Setyanto () and Fahmuddin Agus ()

Mitigation and Adaptation Strategies for Global Change, 2014, vol. 19, issue 6, 845-862

Abstract: With the increasing use of tropical peatland for agricultural development, documentation of the rate of carbon dioxide (CO 2 ) emissions is becoming important for national greenhouse gas inventories. The objective of this study was to evaluate soil-surface CO 2 fluxes from drained peat under different land-use systems in Riau and Jambi Provinces, Sumatra, Indonesia. Increase of CO 2 concentration was tracked in measurement chambers using an Infrared Gas Analyzer (IRGA, LI-COR 820 model). The results showed that CO 2 flux under oil palm (Elaeis guineensis) plantations ranged from 34 ± 16 and 45 ± 25 Mg CO 2 ha –1 year –1 in two locations in Jambi province to 66 ± 25 Mg CO 2 ha –1 year –1 for a site in Riau. For adjacent plots within 3.2 km in the Kampar Peninsula, Riau, CO 2 fluxes from an oil palm plantation, an Acacia plantation, a secondary forest and a rubber plantation were 66 ± 25, 59 ± 19, 61 ± 25, 52 ± 17 Mg ha –1 year –1 , respectively, while on bare land sites it was between 56 ± 30 and 67 ± 24 Mg CO 2 ha –1 year –1 , indicating no significant differences among the different land-use systems in the same landscape. Unexplained site variation seems to dominate over land use in influencing CO 2 flux. CO 2 fluxes varied with time of day (p > 0.001) with the noon flux as the highest, suggesting an overestimate of the mean flux values with the absence of night-time measurements. In general, CO 2 flux increased with the depth of water table, suggesting the importance of keeping the peat as wet as possible. Copyright Springer Science+Business Media Dordrecht 2014

Keywords: Closed chambers; CO 2 flux; Land-use systems; Tropical peat; Water table depth (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1007/s11027-014-9550-y

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