Combined Effect of Biochar and Microplastics on Soil Greenhouse Gas Emissions: A Meta‐Analysis
バイオ炭とマイクロプラスチックの土壌温室効果ガス排出への複合効果：メタ分析 (AI 翻訳)
Yapeng Wang, Yongchun Zhou, Xiaoya Wang, Xuhui He, Jinrong Yang, Wei Han
🤖 gxceed AI 要約
日本語
本メタ分析は、マイクロプラスチック（MPs）とバイオ炭が土壌温室効果ガス（GHG）排出に与える複合効果を検討。MPsはCO2、CH4、N2O排出と地球温暖化係数（GWP）を増加させる一方、バイオ炭と複合処理はこれらを減少させ、バイオ炭単独の方がより効果的だった。効果はバイオ炭原料や実験条件に依存し、野外と室内実験で窒素変換への影響が逆転するなど、条件の違いが重要であることを示した。
English
This meta-analysis investigates the combined effects of microplastics (MPs) and biochar on soil greenhouse gas (GHG) emissions. MPs increased CO2, CH4, N2O emissions and global warming potential, while biochar and combined treatments reduced them, with biochar alone being more effective. Effects depended on biochar feedstock and experimental conditions, including a reversal of nitrogen conversion effects between lab and field, underscoring the need for careful extrapolation.
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
本論文は農業分野のGHG排出削減に示唆を与え、日本の農地におけるバイオ炭活用（例：稲わらバイオ炭）やMPs汚染対策に関連する。日本の農業政策やカーボンフットプリント削減施策に資する知見を提供する。
In the global GX context
This paper contributes to global climate mitigation by elucidating biochar's potential to offset microplastic-induced soil GHG emissions. It highlights feedstock-specific effects and lab-field discrepancies, relevant for designing robust carbon offset projects and improving national GHG inventories.
👥 読者別の含意
🔬研究者:Provides a systematic synthesis of biochar-microplastic interactions on soil GHG emissions, highlighting key moderators for future experimental design.
🏢実務担当者:Informs biochar application strategies for agricultural emission reduction, emphasizing feedstock selection and caution in lab-to-field extrapolation.
🏛政策担当者:Offers evidence for integrating biochar into soil management policies as a carbon sink, with attention to feedstock and environmental conditions.
📄 Abstract（原文）
ABSTRACT Microplastics (MPs) are pervasive in the soil environment and may contribute to increased soil greenhouse gas (GHG) emissions. Biochar, a common soil amendment, exhibits notable carbon sequestration and emission reduction effects. However, research findings regarding the combined effects of MPs and biochar on soil GHG emissions remain inconsistent. This discrepancy limits a comprehensive assessment of the efficacy of biochar in mitigating GHG emissions from MPs‐contaminated soils. This study conducted a meta‐analysis to integrate published data to systematically elucidate the effects of MPs, biochar and their coexistence on soil CO 2 , CH 4 and N 2 O emissions, as well as global warming potential (GWP) and reveal the underlying mechanisms. The results showed that MPs increased CO 2 , CH 4 , N 2 O emissions and GWP, while biochar and combined treatments reduced them, with biochar showing a greater reduction than the combined treatment. This finding confirms that biochar can effectively mitigate the soil greenhouse effect caused by MPs. However, meta‐regression results indicate that the effects of biochar and MPs on soil nitrogen conversion, microbiological indicators and GHG emissions are highly dependent on the experimental environment, soil pH, MPs type and biochar feedstock. Among them, biochar feedstock type was the key to determine the direction of CH 4 and CO 2 emissions: straw biochar reduced CH 4 emissions, while sludge biochar increased CH 4 emissions; manure biochar increased CO 2 emissions, while sludge and straw biochar decreased CO 2 emissions. In addition, the effect direction on soil nitrogen was systematically reversed under laboratory incubation and field experiments, but this reversal was not reflected in N 2 O emissions, suggesting that the mechanisms of N 2 O mitigation differ under different experimental conditions. The above findings emphasize that when assessing the emission reduction potential of biochar, it is necessary to clarify its feedstock and extrapolate laboratory results to field conditions with caution.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.1111/sum.70268first seen 2026-07-13 07:54:55
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