VOCs Impact Soil Carbon Transformations and Sequestration
揮発性有機化合物が土壌炭素の変換と隔離に与える影響 (AI 翻訳)
Zhaoxin Zhang, Juliana Gil-Loaiza, Antonette DiGuiseppe, S. Marshall Ledford, Markus Bill, Romy Chakraborty, Eoin Brodie, Malak Tfaily, Laura Meredith
🤖 gxceed AI 要約
日本語
本研究では、植物や微生物由来の低分子揮発性有機化合物（VOC）が土壌炭素動態に与える影響を、制御培養実験とメタボロミクス解析により評価した。5種類のVOC（メタノール、アセトアルデヒド、アセトン、イソプレン、α-ピネン）により炭素保持率は22%から72%と変動し、無機炭素への変換が主要経路だった。VOCの化学構造と環境条件に依存して、迅速な同化または複雑な長寿命代謝物への変換が起こることを示し、炭素循環モデルへの組み込みの重要性を強調している。
English
This study examined how five common VOCs (methanol, acetaldehyde, acetone, isoprene, α-pinene) impact soil carbon dynamics using controlled incubations and metabolomics. Carbon retention varied from 22% to 72%, with most carbon ending up as inorganic carbon. VOCs either were quickly assimilated or transformed into long-lived metabolites depending on their structure and conditions. Results highlight the need to include VOCs in biogeochemical models to improve carbon cycle predictions.
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
本論文は土壌炭素貯留におけるVOCの役割を定量化しており、日本の農地や森林土壌の炭素管理、温室効果ガスインベントリの精度向上に示唆を与える。ただし、SSBJや有報などの開示制度への直接的な関連性は低い。
In the global GX context
This study quantifies the contribution of VOCs to soil carbon storage, which is relevant for improving global carbon cycle models and climate feedback predictions. It underscores the need to account for reactive trace gases in national greenhouse gas inventories and ecosystem carbon accounting, complementing corporate carbon footprinting efforts that focus on larger fluxes.
👥 読者別の含意
🔬研究者:Soil biogeochemists and climate modelers should incorporate VOC-mediated carbon transformations into their models to reduce uncertainties in carbon-climate feedback.
🏢実務担当者:Agricultural and land-use managers may consider VOC effects on soil carbon balance when evaluating sequestration practices, but direct application is limited.
🏛政策担当者:National inventory compilers could review whether VOC pathways are adequately represented in soil carbon models used for reporting under UNFCCC.
📄 Abstract（原文）
Abstract Soil constitutes the largest terrestrial reservoir of organic carbon, yet small reactive volatile organic compounds (VOCs) from plants and microbes are often overlooked in carbon cycling models. We investigated the impact of five common VOCs (methanol, acetaldehyde, acetone, isoprene, and α‐pinene) on soil carbon dynamics using controlled incubations and advanced metabolomic analyses. VOC‐induced carbon retention ranged from 22% to 72%, with most carbon ending up as total inorganic carbon. Within the organic fraction, VOCs substantially reshaped the soil metabolome: acetaldehyde was efficiently converted to complex carbon forms with potential for long‐term stabilization, methanol and acetone were largely respired by microbes, isoprene persisted under low‐moisture conditions and α‐pinene exhibited bidirectional carbon flow. Depending on their chemical structure and environmental conditions, VOCs were either quickly assimilated or transformed into complex long‐lived metabolites. These results demonstrate that VOCs can contribute substantially to soil carbon storage and highlight the need to include these small molecules in biogeochemical models to improve predictions of carbon dynamics and climate feedback.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.22541/essoar.176442811.13610037/v1first seen 2026-07-27 05:07:23
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