東インドのInceptisolsにおける多様化した水稲基盤作付体系下の炭素隔離ポテンシャルと土壌炭素蓄積
Carbon Sequestration Potential and Soil Carbon Stock Under Diversified Rice-based Cropping Systems in Inceptisols of Eastern India (原題)
Sayantani Purkait, B.B. Behera, A. K. Patra, Sayani Das, Manas Ranjan Nayak, Amaresh Khuntia, D. P. Dash
🤖 gxceed AI 要約
日本語
インド東部のInceptisolsで12の水稲基盤作付体系を7作期目まで比較した圃場試験。緑肥とマメ科を組み込んだ体系が土壌有機炭素と炭素蓄積を高め、緑肥-水稲-グリーングラム-カウピー体系が最高の炭素隔離ポテンシャル（0.51 Mg C ha-1 yr-1）を示した。土壌管理と気候緩和の両立可能性を示す実証結果である。
English
A field experiment in Eastern India's Inceptisols compared twelve rice-based cropping systems through the seventh cycle. Systems integrating green manure and legumes raised soil organic carbon and carbon stock across depths, with the GM-rice-greengram-cowpea system achieving the highest sequestration potential (0.51 Mg C ha-1 yr-1). Results support legume-based diversification for soil carbon storage and climate mitigation.
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
土壌炭素はScope 3・農業由来排出や炭素クレジットの議論と接続しうるが、本論文は圃場レベル測定に留まり、SSBJや有報開示への直接の示唆は限定的。日本の農業系GX関係者には、土壌炭素貯留を定量する手法の参考例として読める。
In the global GX context
Soil carbon sequestration underpins emerging agriculture-related crediting and Scope 3 land-sector accounting, though this plot-level study does not itself engage TCFD/ISSB or CSRD disclosure frameworks. It offers global readers empirical evidence on legume-based diversification as a measurable soil-carbon lever in tropical rice systems.
👥 読者別の含意
🔬研究者:水稲基盤体系における土壌炭素動態の長期圃場データとして、作付多様化と炭素隔離の関係を検証する基礎資料になる。
🏢実務担当者:農業・食品企業のScope 3や土壌炭素イニシアチブ検討時に、マメ科・緑肥導入の定量的な効果目安として参照できる。
🏛政策担当者:農業由来の気候緩和策や土壌炭素クレジット設計において、作付体系の違いによる隔離量差を踏まえる根拠になりうる。
📄 Abstract（原文）
A field experiment was conducted during June, 2023 to May, 2024 at the Central Research Station of Odisha University of Agriculture and Technology, Bhubaneswar, India, under irrigated medium land conditions to evaluate the carbon sequestration potential and soil carbon stock dynamics under diversified rice-based cropping systems in Inceptisols of Eastern India. The study was conducted during the seventh crop cycle of an ongoing field experiment comprising twelve rice-based cropping systems in a randomized block design with three replications. The results showed that diversified rice-based cropping systems significantly improved soil organic carbon, carbon stock and bulk density. The lowest bulk density (1.31 Mg m-3) and the highest soil organic carbon (8.0 g kg-1) were recorded under the GM-rice-greengram-cowpea (vegetable) system, followed by GM-rice–cowpea (vegetable)-greengram (7.9 g kg-1). Soil carbon stock increased at all soil depths (0–15, 15–30 and 30–45 cm), with the highest values (15.65, 8.06 and 5.64 Mg C ha-1, respectively) recorded under the GM-rice–greengram–cowpea (vegetable) system. This system also recorded the highest carbon sequestration potential (0.51 Mg C ha-1 yr-1), followed by GM-rice–cowpea (vegetable)–greengram (0.43 Mg C ha-1 yr-1). The findings indicate that rice-based cropping systems incorporating green manure and legumes enhance soil carbon storage and sequestration, contributing to sustainable soil management and climate change mitigation.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.23910/1.2026.7309first seen 2026-11-02 04:52:20 · last seen 2026-11-06 04:57:12
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