Elevated Atmospheric CO2: Impacts on Crop Growth, Nutritional Quality, and Global Food Security
大気中CO2濃度の上昇：作物の成長、栄養品質、および世界の食料安全保障への影響 (AI 翻訳)
Waseem Ahmed Khattak, Muhammad Anas, Malica Younas, Sudenaz Soylu, Afshan Farid, Muhammad Mahran Aslam, Rafi Ullah, Shah Fahad, Taufiq Nawaz
🤖 gxceed AI 要約
日本語
本レビューは、人為起源のCO2上昇が作物の成長と栄養品質に与える影響を総合的に分析。C3植物では光合成促進により収量が増加する一方、タンパク質や鉄、亜鉛などの必須栄養素が減少する「栄養希釈」現象を確認。FACE実験やメタ分析の結果、小麦や米など主要作物の栄養密度低下が一貫して報告され、特に主食依存地域での栄養不良悪化が懸念される。対策として栄養強化品種の育成や土壌管理、政策介入を提言。
English
This review examines the impact of rising atmospheric CO2 on crop growth and nutritional quality. While elevated CO2 enhances photosynthesis and yield in C3 plants, it also causes a decline in essential nutrients like protein, iron, and zinc in staple crops such as wheat and rice. Evidence from FACE experiments and meta-analyses confirms consistent nutrient dilution, raising concerns for global food security and malnutrition. Strategies including breeding nutrient-dense cultivars, soil management, and policy interventions are discussed.
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
日本はコメや小麦の多くを輸入に依存しており、気候変動による栄養素低下は輸入食品の質や健康影響に直結する。国内農業研究への示唆として、CO2増加下での品種改良や施肥管理の重要性が挙げられる。
In the global GX context
This paper contributes to the global understanding of climate change impacts on food security, directly relevant to ISSB's focus on climate-related risks in agricultural supply chains. The nutrient dilution findings underscore the need for adaptation strategies in corporate sustainability and national food security planning.
👥 読者別の含意
🔬研究者:Provides a comprehensive review of CO2-induced nutrient dilution mechanisms and evidence from FACE experiments, useful for agronomy and climate impact modelers.
🏢実務担当者:Highlights risks to crop nutritional quality under rising CO2, informing breeding programs and farm management adjustments.
🏛政策担当者:Emphasizes the need for policy interventions to address potential malnutrition from nutrient dilution, especially in staple-crop-dependent regions.
📄 Abstract（原文）
The rapid rise in atmospheric carbon dioxide (CO 2 ) levels, primarily driven by anthropogenic activities, significantly impacts global agricultural systems. Elevated CO 2 enhances photosynthesis, particularly in C 3 plants, leading to increased biomass production and potential yield improvements. However, this fertilization effect is often accompanied by a decline in essential nutrients, including proteins, iron, and zinc, in major food crops such as wheat and rice. This review explores the mechanisms underlying CO 2 -induced nutrient dilution, highlighting how carbohydrate accumulation, altered root physiology, and metabolic shifts contribute to reduced nutrient density. Empirical evidence from Free-Air CO 2 Enrichment (FACE) experiments and meta-analyses confirm that increased CO 2 concentrations lead to a consistent decline in crop nutritional quality, raising concerns about global food security and human health. Nutrient deficiencies resulting from CO 2 -driven dilution could exacerbate malnutrition, particularly in regions heavily reliant on staple crops for dietary sustenance. To mitigate these challenges, various strategies are discussed, including breeding nutrient-dense cultivars, optimizing soil management practices, and leveraging genetic modification technologies. Policy interventions promoting agricultural diversification and dietary adjustments are critical in addressing potential nutritional gaps. Future research should focus on long-term studies to assess the sustainability of CO 2 fertilization effects and interdisciplinary approaches integrating plant science, nutrition, and environmental policy. As atmospheric CO 2 levels continue to rise, proactive measures are essential to ensure both increased crop productivity and the maintenance of essential nutrient content for global nutritional security.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.ecz.2026.100088first seen 2026-06-27 05:03:50
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