摘要
Peatland of central Kalimantan covers 2,934,660 ha and some areas are used for oil palm culture. Oil palm culture in peatland requires drainage system. Petland drainage is regarded to enhance greenhouse gases release due to faster peat decomposition and reduce peat surface （subsidence） in certain time. To improve peat productivity, the in situ ameliorant materials should be applied such as biochar of oil palm bunches. The experiment was conducted in greenhouse gases laboratory using soil column method to determine effect of biochar of oil palm bunches on greenhouse gases flux in different peat agro-ecology. The peat samples were taken from central Kalimantan. The peat samples were collected using soil column with 20 cm-diameter and 50 cm in height. The 3 ~ 5 experiment was arranged using randomized block design with three replicates. The first factor treatment was peat samples with different agroecologies （below 3 years old of oil palm, above 3 years old of oil palm, and scrubs）, and the second factor treatment was rate of oil palm bunches biochar （0, l, 2, 3, 4 t.ha-1）. Without applying biochar of oil palm bunches, the CO2 flux from peat with scrub was higher than from peat with oil palm plantation. Application of oil palm bunches biochar in three peat agro-ecologies emitted CO2 lower than application of no biochar. Under peat with scrub ecology, methane flux increased with time period of incubation. Methane flux was generally higher by applying biochar of oil palm bunches in scrubs agroecology, however, application of oil palm biochar reduced methane flux from peat for oil palm plantation. The increase of rate of oil palm bunches biochar decreased significantly more GHGs emission （P 〈 0.01）.
