Trade-Off Between System Yield and Area-Scaled Carbon Cost Among Cropping Systems Under Contrasting Water Management on the North China Plain
異なる水管理下における作付体系のシステム収量と面積ベース炭素コストのトレードオフ：華北平原の事例 (AI 翻訳)
Yuxin Li, Guangzhou Liu, Hongyu Li, Wei Zhang, Y. Y. Guo, Zhen Gao, Xiong Du
🤖 gxceed AI 要約
日本語
華北平原の伝統的な冬小麦・夏トウモロコシ作付体系は高い収量を示すが、面積当たりの炭素排出も最大となる。一方、サイレージ用トウモロコシ二毛作体系は乾物ベースの炭素フットプリントが最も低く、低炭素移行に適する。3年間の圃場実験に基づき、収量と炭素コストのトレードオフを定量化した。
English
On the North China Plain, the traditional winter wheat–summer maize system achieves the highest grain yield but also the highest area-scaled carbon emission. The double silage-maize system shows the lowest dry-matter-scaled carbon footprint, making it more suitable for low-carbon transition. Based on a three-year field experiment, this study quantifies the trade-off between yield and carbon cost among six cropping systems under irrigated and rainfed conditions.
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
本論文は中国華北平原を対象としており、日本の農業ＧＸに直接適用できるものではないが、農業分野での炭素会計手法と作付体系選択による排出削減の可能性を示している。日本の農業政策や食料自給率向上と両立する低炭素農業の検討に参考になり得る。
In the global GX context
This study provides empirical evidence on the carbon footprint of cropping systems in a major agricultural region, contributing to global knowledge on agricultural decarbonization. It demonstrates the trade-offs between productivity and carbon emissions, relevant for designing low-carbon agricultural policies and supply chain decarbonization strategies worldwide.
👥 読者別の含意
🔬研究者:農業炭素会計の実証データとして、作付体系ごとの炭素フットプリント比較手法を参照できる。
🏢実務担当者:収量と炭素排出のトレードオフを考慮した作付体系選択に活用可能。
🏛政策担当者:農業分野の低炭素政策立案において、地域特性に応じた作付体系の評価指標を提供する。
📄 Abstract（原文）
On the North China Plain, the winter wheat season is poorly synchronized with precipitation, making the traditional winter wheat–summer maize system heavily dependent on supplemental irrigation and associated carbon inputs. Based on a split-plot field experiment in Shenzhou, Hebei, from October 2022 to October 2025, this study evaluated the trade-off between annual system yield and area-scaled carbon emission among six cropping systems under conventional irrigation (CK) and rainfed management (R). The winter wheat–summer maize system (WM) maintained the highest grain-oriented annual system yield (22.91 t ha−1 yr−1 under CK), but it also showed the highest area-scaled carbon emission (11.97 t CO2-eq ha−1 yr−1). The winter wheat–summer maize–spring maize system (WMM) reduced area-scaled carbon cost relative to WM (8.97 vs. 11.97 t CO2-eq ha−1 yr−1 under CK), whereas its product-scaled carbon footprint remained comparable to or slightly higher than that of WM. Under a unified dry-matter basis, the double silage-maize system (FM) showed the lowest dry-matter-scaled carbon footprint (CFDM; 193.85 and 175.71 kg CO2-eq t DM−1 under CK and R, respectively). Soil respiration in 2025 varied mainly with observation date and cropping-system configuration, and soil organic carbon (SOC) stock at the 2025 harvest differed among cropping systems, water-management regimes, and soil depths. Overall, WM remained the highest-yielding option under a grain-supply objective, whereas FM, the ryegrass–early-summer maize system (RM), and the forage winter wheat–early-summer maize system (FWM) were relatively more suitable under multifunctional biomass-supply and low-carbon-transition objectives.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/agronomy16090900first seen 2026-05-15 18:28:28
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