Importance of CO2 production in subsoil layers of drained tropical peatland under mature oil palm plantation

Marwanto, Setiari; Sabiham, Supiandi; Funakawa, Shinya

doi:10.1016/j.still.2018.10.021

Cited by 23 publications

(22 citation statements)

References 35 publications

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“…Linear relationship of CO2 flux and groundwater level published by Hooijer et al (2009) was also derived from groundwater level data between 50 and 100 cm. Further, study of Marwanto et al (2019) showed that CO2 fluxes from 50 cm depth of peat subsoil layers under mature oil palm plantation was significantly higher than CO2 fluxes from the upper depth layers. When groundwater levels were lower than 50 cm, soil temperature dominantly influenced the rate of CO2 released from peat compared to groundwater levels.…”

Section: Discussionmentioning

confidence: 95%

CO2 fluxes from drained tropical peatland used for oil palm plantation in relation to peat characteristics and crop age after planting

et al. 2019

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Large expansion of oil palm plantation on peatland has changed its important role for carbon sink into a carbon source. Conversion of peat swamp forest with high carbon density into a monoculture of oil palm has released the significant amount of carbon into atmosphere either carbon previously stored in forest biomass or carbon stored in peat organic matter. Drainage canal to artificially lower groundwater level as a prerequisite of oil palm cultivation provides the favorable condition for soil microbes activities in decomposing peat organic matter resulted in CO2 flux increase. The fluctuation of groundwater level and variation of environmental factors near the peat surface may regulate the rate of CO2 released from the soil. We aimed to measure CO2 fluxes from two sites of oil palm plantation with different peat characteristics and analyzed the correlation with groundwater level, soil temperature, air temperature, gravimetric water content, peat pH, oxidative reductive potential, and crop age. The measurement has been conducted from September 2016 to April 2017 in West Kalimantan, Indonesia by using portable infrared gas analyzer EGM 4. In addition to soil sampling at the same time as the gas measurement, we collected soil samples for some peat characteristics analysis consist of bulk density, particle density, porosity, soil organic matter, ash content, carbon, and nitrogen content prior to CO2 flux measurement. Our result shows that the difference of peat chemical characteristics between two sites has resulted in different CO2 flux. Oil palm ages seemed to affect CO2 flux by regulating microclimatic condition around crop canopy. Another finding is the insignificant relationship between CO2 fluxes and groundwater level unless the groundwater level reached more than 50 cm from the peat surface. It implies that maintaining groundwater level-up to 50 cm resulting in similar CO2 flux.

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Section: Discussionmentioning

confidence: 95%

CO2 fluxes from drained tropical peatland used for oil palm plantation in relation to peat characteristics and crop age after planting

et al. 2019

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“…On the other hand, the generated waste from this industry is of the main concerns of the Malaysian government (Loh and Choo 2013 ). Moreover, this industry is one of the main producers of carbon emission in Malaysia (Marwanto et al 2019 ). Therefore, palm oil companies in Malaysia need to move towards resilient-sustainable and this study presents a suitable model for this transition.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, the generated waste from this industry is of the main concerns of the Malaysian government (Loh and Choo 2013). Moreover, this industry is one of the main producers of carbon emission in Malaysia (Marwanto et al 2019 Having an overview of the graphical illustration of the proposed HHFDMF, Fig. 1 explains the main stages of this research methodology.…”

Section: Introductionmentioning

confidence: 99%

A hyper-hybrid fuzzy decision-making framework for the sustainable-resilient supplier selection problem: a case study of Malaysian Palm oil industry

Fallahpour

Nayeri

Sheikhalishahi

et al. 2021

Environ Sci Pollut Res

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One of the major challenges of the supply chain managers is to select the best suppliers among all possible ones for their business. Although the research on the supplier selection with regards to green, sustainability or resiliency criteria has been contributed by many papers, simultaneous consideration of these criteria in a fuzzy environment is rarely studied. Hence, this study proposes a fuzzy decision framework to investigate the sustainable-resilient supplier selection problem for a real case study of palm oil industry in Malaysia. Firstly, the resilient-based sustainable criteria are localized for the suppliers' performance evaluation in palm oil industry of Malaysia. Accordingly, 30 criteria in three different aspects (i.e. general, sustainable and resilient) are determined by statistical tests. Moreover, a hyper-hybrid model with the use of FDEMATEL (fuzzy decision-making trial and evaluation laboratory), FBWM (fuzzy best worst method), FANP (fuzzy analytical network process) and FIS (fuzzy inference system), simultaneously is developed to employ their merits in an efficient way. In this framework, regarding the outset, the relationships among the criteria/sub-criteria are obtained by FDEMATEL method. Then, initial weights of the criteria/sub-criteria are measured by FBWM method. Next, the final weights of criteria/sub-criteria considering the interrelationships are calculated by FANP. Finally, the performance of the suppliers is evaluated by FIS method. To show the applicability of this hybrid decisionmaking framework, an industrial case of palm oil in Malaysia is presented. The findings indicate the high performance of the proposed framework in this concept and identify the most important criteria including the cost in general aspects, resource consumption as the most crucial sustainable criterion and agility as the most important resilient criterion.

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“…It was indicative that land use and water management change in peat land area will promote higher level of peat degradation and influence CO 2 and CH 4 fluxes from the peat [5] [6]. According [7] CO 2 emission in a peat land used as oil palm plantation was originated from subsoil layer up to 50 cm depth below un-waterlogged soil surface. From environmental view point, this phenomenon needs a serious attention to mitigate the negative impacts of such practices for oil palm plantation.…”

Section: Introductionmentioning

confidence: 99%

The Use of Molecular-Sieving Materials as Ameliorant for Peat Degradation in the Tropics

Santi¹,

Goenadi²,

Sabiham³

et al. 2021

JMMCE

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Peat utilization for agriculture expansion area is commonly found extensively in tropical region during the last few decades. Most agronomical practices involve drainage resulting decomposition of organic materials and increasing drying. This study was carried out to determine the potential use of molecular-sieving materials (MPMs) as an ameliorant for peat soil targeted for reducing the potential hazard of peat degradation. A clinoptilolite-zeolite, empty fruit bunches of oil palm biochar (EFBOPB), and their combination were studied its characteristics to evaluate the ability in adsorbing water and green-house gas emission. A series of laboratory analyses were conducted to determine physicochemical and mineralogical characteristics of both materials and its combination, including elemental analyses, cation exchange capacity (CEC), pH, pore spaces, water holding capacity (WHC), and adsorption capacity for CO 2 , NH 3 , and N 2 . The study revealed that 100 -150 mesh size of zeolite possesses higher values of CEC, WHC, and adsorption capacity for CO 2 , NH 3 , and N 2 compared to EFBOPB, whereas the latter indicated a higher organic-C content and pore spaces. Combination of 75% (w/w) zeolite and 25% (w/w) EFBOPB showed the best composition of these two MPMs to improve WHC of peat and as consequences slowing down the firing process of the peat. Based on the gas adsorption data, it could be assumed that the mixture of MPMs studied could be considered as an effective material to reduce risk of peat from fire potential hazard and retard GHG emission.

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Importance of CO2 production in subsoil layers of drained tropical peatland under mature oil palm plantation

Cited by 23 publications

References 35 publications

CO2 fluxes from drained tropical peatland used for oil palm plantation in relation to peat characteristics and crop age after planting

CO2 fluxes from drained tropical peatland used for oil palm plantation in relation to peat characteristics and crop age after planting

A hyper-hybrid fuzzy decision-making framework for the sustainable-resilient supplier selection problem: a case study of Malaysian Palm oil industry

The Use of Molecular-Sieving Materials as Ameliorant for Peat Degradation in the Tropics

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