Microcosmic Study on Heterotrophic CO2 Emission from Tropical Peat as Related to Water Table Modification

Lastuti, Dewi and Kadir, Sabaruddin and Budianta, Dedik (2016) Microcosmic Study on Heterotrophic CO2 Emission from Tropical Peat as Related to Water Table Modification. Sriwijaya Journal of Environment, 1 (1). pp. 5-9. ISSN 2527-3809

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    Abstract

    A microcosmic experiment was conducted to estimate CO2 emission from peat soils. Two treatments, peat humification levels (F = Fibric, H = Hemic, S = Sapric) and water levels (G0 = 10 cm; G1= 0 cm; G2 =-20 cm), were tested and arranged according to factorial randomized complete block design (RCBD) with 3 replicates. Current study revealed that CO2 emission was significantly affected (p<0.01) by peat humification levels and waterlevels. The sapric peat emitted significantly higher CO2(696.69 b ± 43.95 mg CO2 g-1 peat d-1) than hemic (504.62 ± 105.72 mg CO2 g-1 peat d-1) and fibric (492.56 ± 90.69 mg CO2 g-1 peat d-1) peats. Decreases in water level shifted anaerobic condition into aerobic condition, causing significant increases in CO2 emission. Regardless of peat humification levels, CO2 emission and water table depth in current study showed a nonlinear relationship. It seems that a threshold water tables for enhanced CO2 emissions was within the range of -10 to -20 cm below peat surface. Keyword: microcosmic, peat, humification, CO2 emission

    Item Type: Article
    Subjects: S Agriculture > S Agriculture (General)
    S Agriculture > SD Forestry
    Divisions: Faculty of Agriculture
    Depositing User: Dr Sabaruddin Kadir
    Date Deposited: 13 Feb 2017 14:37
    Last Modified: 13 Feb 2017 14:37
    URI: http://eprints.unsri.ac.id/id/eprint/7069

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