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Soil CO2 emissions and net primary production of an oil palm plantation established on tropical peat

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Title: Soil CO2 emissions and net primary production of an oil palm plantation established on tropical peat
Authors: Wakhid, Nur Browse this author
Hirano, Takashi Browse this author →KAKEN DB
Keywords: biomass production
carbon sequestration
frond decomposition
heterotrophic respiration
Issue Date: 2021
Publisher: International Peatland Society
Journal Title: Mires and Peat
Volume: 27
Start Page: 13
Publisher DOI: 10.19189/MaP.2021.OMB.StA.2159
Abstract: The C dynamics of a young (7 years old) smallholder oil palm plantation on peat soil in South Kalimantan (Indonesia) was investigated by directly assessing soil carbon dioxide (CO2) emissions and C sequestration as net primary production (NPP) over a period of 19 months, from September 2018 to March 2020. Soil CO2 efflux was measured monthly using a closed chamber system in 'near (1m)' and 'far (3m)' positions relative to tree bases, in order to measure total soil respiration (SR) and peat decomposition (PD), respectively. Simultaneously, litter (frond) decomposition (LD) was measured using a litter bag method. NPP was calculated as the sum of above-ground and below-ground biomass production. The C fluxes via SR, PD and LD were estimated to be 23.1 +/- 6.13, 15.4 +/- 4.37 (mean +/- SD) and 0.38 Mg ha(-1) yr(-1), respectively. NPP (as C) was estimated to be 1090 g m(-2) yr(-1). NPP was low, mostly due to immaturity of the plantation. Heterotrophic respiration (HR) (= PD + LD) was 15.8 Mg ha(-1) yr(-1), resulting in the plantation acting as a net C source of 4.9 Mg ha(-1) yr(-1) (= NPP - HR).
Type: article
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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