Modeling mitigation and adaptation co-benefits in rice systems in Bangladesh
バングラデシュの稲作システムにおける緩和と適応の共便益のモデリング (AI 翻訳)
Cynthia Rosenzweig, Roberto Valdivia, Sonali McDermid, Tao Li, Erik Mencos Contreras, Sk. Ghulam Hussain, Md. Rajibul Alam, Apurbo K. Chaki, Umme Aminun Naher, Md. Bazlur Rashid, Tek B. Sapkota, Sanketa Kadam, Natalie Kozlowski, Timothy J. Krupnik
🤖 gxceed AI 要約
日本語
気候変動が米の収量と食料安全保障を脅かす中、水田からのメタン排出削減が急務である。本研究はバングラデシュの3地域で間断灌溉（AWD）と稲作強化システム（SRI）を評価し、AWD-SRIが従来の湛水栽培と比較してメタン排出を平均35%削減し、農家所得と水利用効率を改善することを示した。ただし効果は地域や農場規模により異なり、普及には不均一性への対応が必要である。
English
Climate change threatens rice yields while flooded rice emits methane. This study evaluates Alternate Wetting and Drying (AWD) and System of Rice Intensification (SRI) across three Bangladeshi districts. Results show that SRI-AWD reduces methane emissions by 35% on average while improving farm income and water-use efficiency compared to continuous flooding, though outcomes vary by region and farm size.
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
日本でも水田からのメタン排出削減は重要な課題であり、本論文のAWDやSRIの評価手法は日本の稲作・農業政策に示唆を与える。特にSSBJや有報での農業関連Scope1排出開示が進む中、実践的な緩和策のエビデンスとして有用。
In the global GX context
Methane from rice paddies is a major agricultural emission source globally. This paper provides rigorous evidence on mitigation-adaptation co-benefits applicable to many Asian rice-producing countries. It links to ISSB and TCFD's agricultural emissions disclosure and transition finance for climate-smart agriculture.
👥 読者別の含意
🔬研究者:A framework integrating climate, crop, methane, water-use, and economic outcomes for heterogeneous farming systems.
🏢実務担当者:Evidence that SRI-AWD can reduce emissions and improve farm income, but scaling requires targeting specific farm types.
🏛政策担当者:Supports incorporating AWD/SRI in NDCs and national adaptation plans, highlighting distributional effects.
📄 Abstract（原文）
Abstract Climate change threatens rice yields and global food security, while conventional flooded rice remains a major source of methane emissions. Management options that enhance both mitigation and adaptation are therefore essential. We evaluate water-saving and low-emission rice management practices, Alternate Wetting and Drying (AWD) and System of Rice Intensification (SRI), compared with continuous flooding across three districts in Bangladesh using an integrated climate–crop–economic modeling framework. The analysis links climate, crop, methane, water-use, and farm economic outcomes and assesses impacts across district and farm-size strata to capture spatial and socioeconomic heterogeneity. Under warmer futures, with each management system evaluated relative to its own current-climate baseline, farm net returns vary across strata, with modest gains of up to 5% in some regions but declines of up to 10% in most areas, while methane emissions increase by 12–55%. The modeled adoption of SRI-AWD, relative to continued conventional flooding under the same climate conditions, reduces methane emissions by 35% on average while improving farm income and water-use efficiency, although outcomes vary across farm populations. These results show that SRI-AWD can reduce economic losses and emissions relative to conventional management, while highlighting that scaling potential depends on where and for whom benefits occur across heterogeneous rice-farming systems.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1088/2976-601x/ae7e8efirst seen 2026-07-07 04:40:29
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