Seasonal litter contribution to total peat respiration from drained tropical peat under mature oil palm plantation

Authors

  • Heru Bagus Pulunggono Department of Soil Science and Land Resource, Faculty of Agriculture, IPB University
  • Siswanto Siswanto Indonesian Research Institute for Biotechnology and Bioindustry
  • Husni Mubarok Agronomy Research PT. Astra Agro Lestari
  • Happy Widiastuti Indonesian Research Institute for Biotechnology and Bioindustry
  • Nizam Tambusai PT. Astra Agro Lestari
  • Moh Zulfajrin Department of Soil Science and Land Resource, Faculty of Agriculture, IPB University
  • Syaiful Anwar Department of Soil Science and Land Resource, Faculty of Agriculture, IPB University
  • Darmono Taniwiryono Indonesian Research Institute for Biotechnology and Bioindustry
  • Basuki Sumawinata Department of Soil Science and Land Resource, Faculty of Agriculture, IPB University
  • Supiandi Sabiham

DOI:

https://doi.org/10.15243/jdmlm.2022.092.3247

Keywords:

groundwater table, heterogeneous litter respiration, soil CO2 efflux

Abstract

The amount of CO2 gas emissions in drained peatland for oil palm cultivation has been widely reported. However, the research addressing the contribution of litter respiration to peat and total respiration and its relationship with several environmental factors is found rare. The aim of this study was to measure peat and heterogeneous litter respiration of drained tropical peat in one year at a distance of 2.25 m and 4.50 m from mature oil palm trees of 14 years using the chamber method (Licor Li-830). In addition to CO2 efflux, we measured other environmental parameters, including peat temperature (10 cm depth), air temperature, groundwater table (GWL), and rainfall. Results showed that the mean total peat respiration (Rt) was 12.06 g CO2 m-2day-1, which consisted of 68% (8.24 g CO2 m-2day-1) peat (Rp) and root (Rr) respiration and 32% (3.84 g CO2  m-2day-1) of litter respiration (Rl) at the distance of 2.25 m from the palm tree. Meanwhile, at a farther distance, the Rt was 12.49 g CO2m-2day-1, the contribution of Rp was 56% (6.78 g CO2 m-2day-1), and Rl was higher than the closest distance (46%; 5.71 g CO2 m-2day-1). Thus, one-year observation resulting the mean Rt and Rr was 0.07–0.08 Mg CO2 ha-1 day-1, while Rl was 0.04–0.06 Mg CO2 ha-1 day-1. The means of Rt, Rp, and Rl were significantly different in the dry season than those recorded in the rainy season. The climatic-related variable such as peat and air temperature were chiefly governing respiration in peat under mature oil palm plantation, whereas the importance of other variables present at particular conditions. This paper provides valuable information concerning respiration in peat, especially for litter contribution and its relationship with environmental factors in peatland, contributing to global CO2 emission. 

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11-10-2021

Accepted

26-10-2021

Published

01-01-2022

How to Cite

Pulunggono, H. B., Siswanto, S., Mubarok, H., Widiastuti, H., Tambusai, N., Zulfajrin, M., Anwar, S., Taniwiryono, D., Sumawinata, B., & Sabiham, S. (2022). Seasonal litter contribution to total peat respiration from drained tropical peat under mature oil palm plantation. Journal of Degraded and Mining Lands Management, 9(2), 3247–3263. https://doi.org/10.15243/jdmlm.2022.092.3247

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Vol. 9 No. 2 (2022)

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Research Article

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