碳排放量上升直接影响作物的营养质量
Sterre F Ter Haar1, Peter M van Bodegom1, Laura Scherer1
1Institute of Environmental Sciences (CML), Leiden University, Leiden, the Netherlands.
Global change biology
|November 14, 2025
概括
大气中二氧化碳 (CO2) 的增加减少了作物中等必需的营养素. 这种全球性的元素转变威胁到营养安全,使食物更热量但更不健康,即使食物供应得到维持.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 生物化学 生化学
背景情况:
- 已知大气中二氧化碳 (CO2) 的上升会通过气候和社会经济变化影响粮食供应.
- 二氧化碳对植物营养成分 (固体测量) 和随后人类营养的直接影响不太清楚.
- 植物固体几何学,即植物内部元素的平衡,可以因CO2等环境因素而改变.
研究的目的:
- 调查二氧化碳增加对食用植物元素组成的直接影响.
- 量化各种物种和营养类型的植物固态度的变化.
- 评估这些变化对人类营养和粮食安全的影响.
主要方法:
- 进行了迄今为止最大的食用植物部分元分析,分析了5324条条目和29524对观察对.
- 包括来自43种不同作物的数据,并分析了32种必需和反营养素.
- 采用了一种新的方法来量化植物在高二氧化碳水平下的元素变化.
主要成果:
- 由于各种物种的二氧化碳水平上升,食用植物中出现了广泛的元素变化.
- 观察到营养元素的差异反应,其中显示出最显著的下降.
- 发现C3和C4植物都受到影响,影响因物种和组织类型而异.
结论:
- 升高的二氧化碳显著改变了作物的营养质量,减少了必需矿物质含量.
- 这种稳健度变化对营养安全构成威胁,可能会在全球加剧营养不良.
- 未来的粮食供应可能在热量上充足,但在营养上不足,影响公众健康.
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