Soil health improvement and climate change mitigation in soybean agroecosystems
大豆農業生態系における土壌健康の改善と気候変動緩和 (AI 翻訳)
Ratih Kemala Dewi, Qiliang Huang, Rahmatullah Hashimi, Soh Sugihara, Junta Yanai, Nobuo Sakagami, Masakazu Komatsuzaki
🤖 gxceed AI 要約
日本語
日本の黒ボク土に適した土壌健康評価枠組みを開発。19年間の有機大豆圃場で不耕起・カバークロップ・バイオ炭が土壌有機炭素を増加させ、土壌健康スコアと地球温暖化ポテンシャル低減に強く関連することを示した。
English
Developed a soil health assessment framework for Japanese Andosols using a 19-year organic soybean field experiment. No-tillage with cover crops and biochar increased soil organic carbon and soil health scores, which strongly correlated with reduced net global warming potential.
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
日本独自の黒ボク土を対象とし、SSBJや有報での農業関連気候リスク評価やカーボン・クレジット制度（J-クレジット）のバイオ炭活用に直接貢献しうる知見を提供する。
In the global GX context
Provides empirical evidence linking soil health practices to climate mitigation, relevant for global carbon accounting frameworks (e.g., IPCC guidelines) and agricultural climate policies like the EU's Carbon Farming initiative.
👥 読者別の含意
🔬研究者:土壌健康指標と炭素隔離の関係性の定量評価に活用できる。
🏢実務担当者:不耕起・カバークロップ・バイオ炭の組み合わせによる土壌炭素貯留とGHG削減の実践的知見。
🏛政策担当者:日本の農業分野での気候変動緩和策として、土壌健康評価の制度化やJ-クレジット拡充に活用可能。
📄 Abstract（原文）
Although soil health indicator is extensively examined worldwide, Japan has yet to establish a soil health assessment framework calibrated to the unique properties of Andosols. In this study, we evaluated a long-term (19-year) organically managed soybean field and generated soil health scores using a cumulative normal distribution function to develop a site-specific benchmark. Treatments were tillage (no-tillage, moldboard plowing, and rotary tillage), cover crop (rye, hairy vetch, and fallow), and the addition of fertilizer or biochar in four replications. Intensive tillage reduced soil health, with soil health score under moldboard plowing significantly lower than no-tillage during 2020–2022 (p < 0.05). No-tillage with cover crop and biochar enhanced soil health status by sustaining soil organic carbon (SOC) at 3.8–4.8%. Overall soil health score was positively correlated with SOC (r = 0.7; p < 0.01), while higher soil health score was strongly associated with reductions in net global warming potential (rs = − 0.95; p < 0.01). SOC emerged as one of the most influential indicators, directly influenced soil ß-glucosidase activity (r = 0.84, p < 0.001), substrate-induced respiration (r = 0.7, p < 0.001), NO3– (r = 0.65, p < 0.05), and EC (r = 0.36, p < 0.01). Although NT-based systems may not achieve the highest yields due to interannual variability, they may offer substantial environmental benefits by contributing to long-term climate change mitigation.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1038/s41598-026-45849-8first seen 2026-05-17 06:55:10
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