有機無機施肥は乾燥地トウモロコシ畑の土壌炭素画分と細菌群集構造を通じて炭素隔離・排出カップリングを制御する
Organic-inorganic fertilization regulates carbon sequestration-emission coupling through soil carbon fractions and bacterial community structure in dryland maize fields (原題)
Wenying Liu, Aixia Xu, Lingling Li, Yongjie Zhou, Isaac Osei-Tutu, Junhng Xie, 方彦杰
🤖 gxceed AI 要約
日本語
2012年から継続する半乾燥地トウモロコシ畑の長期試験で、有機・化学肥料の併用（SC）が単独施肥より高い収量と炭素排出効率、正の純生態系生産性を両立することを示した。有機物単独施用は土壌炭素を増やすが生育期の炭素収支は改善せず、施肥は細菌群集組成の変化を介して炭素隔離と排出の関係を調整していた。
English
A long-term semiarid maize trial (since 2012) shows integrated organic-inorganic fertilization (SC) achieved the highest yield, better carbon emission efficiency, and positive growing-season net ecosystem productivity. Organic-only inputs raised soil carbon pools but did not improve the growing-season carbon balance, with effects mediated by shifts in bacterial community composition.
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
農地土壌炭素はScope 3・サプライチェーン排出や農業由来排出削減の議論と接続しうるが、本論文は制度・開示枠組みに直接言及しない。日本の農業GXや食料システム脱炭素に関心ある読者には、施肥設計が炭素収支を左右する実証例として参考になる。
In the global GX context
Adds empirical evidence on how fertilization regimes shape soil carbon sequestration versus respiratory losses, relevant to agricultural emissions accounting and land-based carbon removal debates. It does not engage TCFD/ISSB/CSRD disclosure frameworks directly, so its global disclosure value is indirect.
👥 読者別の含意
🔬研究者:施肥管理が土壌炭素画分・微生物群集・炭素収支をどう結びつけるかの長期実証データを提供する。
🏢実務担当者:農業・食品企業が土壌炭素と収量を両立する施肥設計を検討する際の参考になる。
🏛政策担当者:農業由来排出削減や土壌炭素貯留政策の設計において、有機無機併用の有効性を示す根拠となる。
📄 Abstract（原文）
Introduction Carbon sequestration and emission reduction in farmland ecosystems are central to sustainable agricultural development. This study evaluated whether organic-inorganic fertilization could coordinate soil carbon accumulation, respiratory carbon losses, crop productivity, and bacterial community structure in a semiarid dryland maize system. Methods Using a long-term fixed-site field experiment established in 2012, we compared five fertilization regimes during 2024 and 2025: no fertilization (NA), chemical fertilizer alone (CF), combined organic and chemical fertilization (SC), organic fertilizer alone (SM), and maize straw alone (MS). We measured maize productivity, soil total carbon and nitrogen, soil organic carbon and labile carbon fractions, soil CO 2 emissions, and bacterial community composition. Results Fertilization increased grain yield and soil carbon and nitrogen pools, although its effects on the growing-season carbon budget differed among treatments. SC produced the highest grain yield, improved carbon emission efficiency, and maintained positive growing-season net ecosystem productivity within the accounting framework used in this study. Compared with NA, SC and CF increased grain yield by 235.4% and 195.3%, respectively. Although SM and MS increased soil carbon and nitrogen pools, neither improved the growing-season balance between crop production and respiratory carbon losses. MS produced the highest total carbon emissions and the most negative net ecosystem productivity. Fertilization primarily altered bacterial community composition through treatment-specific shifts in dominant taxa. SC and CF favored Gemmatimonadota-related groups, whereas MS enriched copiotrophic and substrate-responsive groups, including Proteobacteria and Bacteroidota. Discussion These findings indicate that integrated organic-inorganic fertilization may be more effective than high organic-carbon inputs alone for coordinating maize productivity, soil carbon accumulation, and growing-season carbon performance in semiarid dryland maize systems.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3389/fmicb.2026.1901767first seen 2026-10-09 04:51:18
🔔 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。