Dataset on soil carbon dioxide fluxes from an incubation with tropical peat from three different land-uses in Jambi Sumatra Indonesia

Abstract

Conversion of tropical peat swamp forests to increase and agricultural production has generated substantial peat carbon loss in the Asia-Pacific region. Different land-uses and management practices oxidize the tropical peat at diverse rates due mainly to different water table levels. In recent years, several studies have measured soil carbon dioxide emissions in-situ; however, only few studies have evaluated the effect of moisture on carbon dioxide fluxes in incubation experiments. Here, we present the dataset of an incubation performed with 360 intact peat cores from three different land-uses (i.e. 120 from intact peat swamp forest; 120 from drained logged peat forest; and 120 from oil palm plantation) collected on the peat dome of Jambi Sumatra Indonesia. Different moisture levels in the intact cores were set by either drying the intact peat cores for short period of time or by adding extra water before the incubation. Dynamic dark aerobic incubation in airtight containers coupled with carbon dioxide measurement with an infrared gas analyser and the gas fluxes was used to measure to gas fluxes. The average carbon dioxide fluxes were 5.38 ± 0.91, 4.15 ± 0.35 and 1.55 ± 0.13 µg CO 2 -C g −1 h −1 for the intact peat swamp forest, drained logged peat forest and oil palm plantation, respectively.

Integrated water management practice in tropical peatland agriculture has low carbon emissions and subsidence rates

“…Khasanah and van Noordwijk (2019) reported mixed coconut emissions using subsidence data, making direct comparisons challenging [ 57 ]. CO 2 emissions in 7-year-old palm oil plantations have been reported at 28.4 t CO 2 ha −1 yr −1 [ 58 ]. In 15-year-old highly fertilized palm oil plantations with applied dolomite and NPK fertilizer, CO 2 flux reached approximately 46 ± 30 t CO 2 ha −1 yr −1 [ 59 ].…”

Declined peat heterotrophic respiration as consequences from zeolite amendment simulation: coupling descriptive and predictive modelling approaches

“…Zeolite has a high water holding capacity/WHC, which can efficiently retain water (Nakhli et al, 2017;Mondal et al, 2021). In their intact natural environment, peat does not require zeolite application since they also have high WHC (Comeau et al, 2021) and are located in coastal or riverine back swamp areas that are periodically or permanently waterlogged (Sakabe et al, 2018). At the early stage of oil palm cultivation, the environmental impact associated with the high CO2 flux could arise at the open peat surface due to the deepening GWL and rising of air and soil temperature, especially during the dry season (Ishikura et al, 2018).…”