Spatial variability of soil greenhouse gas emissions in oil palm plantation under different management zones
異なる管理区域における油ヤシ農園の土壌温室効果ガス排出の空間変動 (AI 翻訳)
Y. Chang, Ruben Sakrabani, Karolina Golicz, Sang Yoon Kim, Ngai Paing Tan, Choon Cheak Sim
🤖 gxceed AI 要約
日本語
本研究は、油ヤシ農園の3つの管理区域（葉堆積区、ヤシ周辺区、収穫経路）における土壌CO2、N2O、CH4排出を測定し、区域ごとに有意な差があることを示した。特に葉堆積区はGHG排出のホットスポットであり、微細な空間変動を考慮したGHGインベントリと排出係数の開発の重要性を強調している。
English
This study measured soil CO2, N2O, and CH4 emissions across three management zones in an oil palm plantation. The frond heap zone was a biogeochemical hotspot with significantly higher emissions. Results highlight the need for fine-scale spatial variability in GHG inventories and zone-specific mitigation.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
本研究の管理区域別排出係数アプローチは、日本の農業GHGインベントリにおける土地利用管理の細分化や、排出削減策の地域最適化に示唆を与える。
In the global GX context
This paper provides empirical GHG flux data from a major tropical crop, supporting spatially explicit emission factors and aligning with IPCC inventory guidelines. It is particularly relevant for tropical countries and sustainable palm oil certification.
👥 読者別の含意
🔬研究者:This study provides high-resolution data on GHG fluxes across management zones, useful for developing spatially explicit emission factors and improving plantation-scale carbon budgets.
🏢実務担当者:For plantation managers and sustainability certifiers, this shows that targeting mitigation efforts on frond heap zones can significantly reduce emissions.
🏛政策担当者:Policymakers can use these findings to refine national GHG inventories for plantation agriculture and to design zone-specific mitigation policies.
📄 Abstract（原文）
As global demand for palm oil continues to rise, improving the accuracy of greenhouse gas (GHG) accounting in oil palm plantations is essential for evaluating their environmental sustainability. Spatial heterogeneity created by routine plantation management can strongly influence soil properties and GHG emissions. In this study, we assessed soil CO2, N2O, and CH4 emissions across three principal management zones in a mature oil palm (nine-year-old) plantation cultivated in mineral soils- frond heap (FH), palm circle (PC), and harvesting path (HP) under standard operational practices. Soil GHG fluxes were measured using static chambers coupled with a Fourier-transform infrared (FTIR) gas analyser, alongside surface soil (0–5 cm) sampling to characterise soil organic carbon, total nitrogen, moisture content, bulk density, porosity, and pH. In total, 90 measurement points were evaluated to capture within-plantation spatial variability. The FH zone exhibited significantly higher soil organic carbon, total nitrogen, porosity, and moisture content, and lower bulk density than the PC and HP zones. These properties translated into significant higher mean GHG fluxes in FH soils, with CO2, N2O, and CH4 emissions of 165.7 mg m−2 h−1, 0.25 mg mg m−2 h−1, and 0.25 mg m−2 h−1, respectively. In contrast, HP soils were more compacted, carbon-poor, and exhibited the lowest GHG emissions. Spearman’s rank correlation analyses indicated that CO2 emissions were primarily driven by increased soil porosity, while elevated soil moisture and organic matter inputs in FH zones promoted conditions conducive to N2O production and anaerobic microsite formation supporting CH4 emissions. When expressed as CO2-equivalents, the FH zone acted as biogeochemical hotspot, contributed disproportionately to plantation-scale GHG emissions despite occupying only one-third of the total area. These findings highlight the importance of incorporating fine-scale spatial variability when developing GHG inventories, emission factor development, and targeted, zone-specific mitigation strategies.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1088/2515-7620/ae56d9first seen 2026-05-06 00:49:40
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