Journal of Oil Palm Research Vol. 25  2013 April p.  44-57

Soil microbial and root respirations from three ecosystems in tropical peatland of Sarawak, Malaysia

Author(s): LULIE Melling * ; CINDY SOO Yun Tan ** ; KAH Joo Goh ‡ ; HATANO, Ryusuke ‡‡

The partitioning of soil respiration (SR) to root respiration (RR) and microbial respiration (MR) was conducted using the root exclusion and closed chamber method in three ecosystems on tropical peatlands. RR was estimated by differencing SR and MR. The forest ecosystem displayed significantly higher monthly MR compared with oil palm and sago ecosystems with the highest value of 219 mg CO2 C m-2 hr-1 in May 2003. This might be attributed to its thick leaf litter and root mat, and water filled pore space which was conducive for microbial activity. The lowest range of MR, between 153 mg CO2 C m-2 hr-1 (October) and 34 mg CO2 C m-2 hr-1 (September), was found in the sago ecosystem probably due to its high water-table. The highest RR was recorded in the forest (172 mg CO2 C m-2 hr-1), followed by oil palm (128 mg CO2 C m-2 hr-1) and sago (95 mg CO2 C m-2 hr-1). The latter might be ascribed to its slow growth rate, while the former to higher root biomass and growth rate. The annual ratio of RR to SR was 52% in the sago ecosystem and 60% to 62% in both oil palm and forest ecosystems.

Keywords: , , , ,

Author Information
* Tropical Peat Research Laboratory Unit, Chief Minister’s Department, Jalan Badruddin, 93400 Kuching, Sarawak, Malaysia.

** Faculty of Applied Science, Universiti Teknologi MARA, Jalan Meranek, 94300 Kota Samarahan, Sarawak, Malaysia.

‡ Advanced Agriecological Research Sdn Bhd, Locked Bag 212, Sg Buloh, P.O. 47000 Sungai Buloh, Selangor, Malaysia.

‡‡ Soil Science Laboratory, Graduate School of Agriculture, Hokkaido University, Sapporo 060-8589, Japan.

Cited By

1. Corley, R. H. V., and P. B. Tinker. The Oil Palm: Fifth Edition. , 2015, doi:10.1002/9781118953297.
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5. Wakelin, S. A., et al. "Soil Physicochemical Properties Impact More Strongly on Bacteria and Fungi than Conversion of Grassland to Oil Palm." Pedobiologia, Vol. 59, No. 3, 2016:83-91, doi:10.1016/j.pedobi.2016.03.001.
6. Wakhid, N., et al. "Soil Carbon Dioxide Emissions from a Rubber Plantation on Tropical Peat." Science of the Total Environment, Vol. 581-582, 2017:857-865, doi:10.1016/j.scitotenv.2017.01.035.

Source: Scopus Last Updated: 31 May 2017

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