SOIL CO2 FLUX ACROSS MANAGEMENT ZONES IN AN OIL PALM PLANTATION ON PEAT IN PAHANG, MALAYSIA
DOI: https://doi.org/10.21894/jopr.2026.0012
Received: 8 April 2025 Accepted: 15 December 2025 Published Online: 11 February 2026
Soil respiration is a significant contributor to the soil carbon (C) balance. However, knowledge of how it varies between management zones in oil palm plantation, and how it influences peat C loss rate, is still lacking. Therefore, a study to investigate the variations of soil CO2 flux (Rs) in different management zones was conducted in a 14-year-old oil palm plantation on peat soils. R5 was monitored over five months on a 1 ha plot located in an oil palm plantation in Pekan, Pahang, Malaysia using the closed chamber method. Spatial variability was considered by differentiating between C fluxes from each of three surface (management) zones (i.e., harvest paths, frond piles and inter-row). The mean Rs from the plantation was evaluated at 1.19 ± 0.09 g m-2 hr-1 across the three different surface zones, whose individual flux values were 0.68 ± 0.07, 1.19 ± 0.16 and 1.71 ± 0.19 m-2 hr-1, respectively. Highlighting CO2 flux disparities among management zones provides insight into how surface management influences peat respiration. Additionally, Rs exhibited strong negative coherence with soil moisture. However, further information of the factors controlling soil CO2 flux is required to assess the broader applicability of these findings.
KEYWORDS:1 Malaysian Palm Oil Board,
6, Persiaran Institusi, Bandar Baru Bangi,
43000 Kajang, Selangor, Malaysia.
* Corresponding author e-mail: izzati@mpob.gov.my