Measurement Technique Effects on Greenhouse Gas Emissions from Conventionally Tilled, Furrow-Irrigated Soybean on a Silt-Loam Soil

測定手法が慣行耕起・溝灌漑大豆のシルトローム土壌からの温室効果ガス排出に及ぼす影響 (AI 翻訳)

Lucia Escalante Ortiz, Kristofor R. Brye, Diego Della Lunga, Jonathan B. Brye, Lauren Gwaltney, Chandler M. Arel, Trenton L. Roberts, Caio Canella Vieira, Michelle A. Evans-White, Michael B. Daniels, Beth H. Baker

Atmosphere📚 査読済 / ジャーナル2026-05-06#炭素会計Origin: US

DOI: 10.3390/atmos17050475

原典: https://doi.org/10.3390/atmos17050475

🤖 gxceed AI 要約

日本語

本研究は、慣行耕起・溝灌漑の大豆畑における温室効果ガスフラックス測定手法の影響を比較。光学式とクロマトグラフィー法でCO2排出量に有意差が生じ、測定手法の選択が排出量推定に影響することを示した。

English

This study compares chamber-based measurement methods for GHG fluxes in tilled, irrigated soybean fields. Results show significant differences in CO2 emissions between optical and gas chromatography methods, highlighting the need to consider measurement technique effects in field studies.

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

日本では水田のメタン測定が主だが、畑地のGHG計測手法の標準化にも示唆を与える。測定手法の違いが排出量推定に影響する点は、国内のインベントリ改善に役立つ可能性がある。

In the global GX context

This paper provides empirical evidence that measurement methods significantly affect GHG emission estimates, which is critical for accurate carbon accounting in agricultural sectors globally. It underscores the need for method harmonization to improve comparability across studies.

👥 読者別の含意

🔬研究者:Method selection matters: optical vs. gas chromatography yields different CO2 fluxes; consider closure time and chamber design.

🏢実務担当者:If conducting agricultural GHG monitoring, be aware that measurement technique can bias emission estimates; choose methods aligned with reporting standards.

📄 Abstract（原文）

Agricultural greenhouse gas (GHG) fluxes are often measured using chamber-based methods. However, comparisons among chamber-based methods are limited. This study compared the effects of chamber type and GHG concentration measurement method on GHG fluxes, emissions, global warming potential (GWP), and reduced two-gas GWP (GWP*) in conventionally tilled soybean (Glycine max L. [Merr]) on a silt-loam soil (Aeric Epiaqualfs) in southeast Arkansas. Carbon dioxide (CO2) fluxes measured by optical feedback-cavity enhanced absorption spectroscopy (OF-CEAS, FT-LICOR) were greater (p < 0.01) than from the non-steady-state, non-flow-through, static, closed-chamber method analyzed by gas chromatography (NFT-GC), while methane (CH4) and nitrous oxide (N2O) fluxes were greater (p < 0.01) from the NFT-GC than the FT-LICOR method. Cumulative season-long CO2 emissions were 36.2, 31.6, and 13.7 times greater (p < 0.01) from the FT-LICOR than the NFT-GC method for 0–15, 0–30, and 0–60 min gas sampling intervals, respectively. Methane N2O emissions and GWP* did not differ (p > 0.05) between FT-LICOR and NFT-GC methods for the 0–15, 0–30, and 0–60 min intervals. Results suggest that differences in GHG flux, emissions, and GWP estimates reflect the combined influence of measurement methods rather than individual system components (i.e., chamber design, analyzer type, or closure time), which should be considered when designing and executing field studies.

🔗 Provenance — このレコードを発見したソース

crossref https://doi.org/10.3390/atmos17050475first seen 2026-05-14 22:45:41

🔔 こうした論文の新着を逃したくない方はキーワードアラートに登録（無料・3キーワードまで）。

gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。