分析全球营养缺口及其通过再分配和增加供应来弥补的潜力
Andrew J Fletcher1,2,3, Raquel Lozano1,2, Warren C McNabb1,2
1Riddet Institute, Massey University, Palmerston North, New Zealand.
Frontiers in nutrition
|August 26, 2024
概括
全球粮食系统在公平的营养分发方面面临挑战,导致国家缺乏必需的维生素和矿物质,尽管全球供应充足. 解决这些差距需要有针对性的增加营养供应和改进食品分发战略.
科学领域:
- 全球粮食系统分析分析
- 营养科学 营养科学
- 可持续农业 可持续农业
背景情况:
- 全球粮食系统对于人类的生存至关重要,但营养物质的公平分配仍然是一个重大挑战.
- 当前的粮食生产在全球范围内可能足够,但差异导致特定人群的广泛营养不足.
- 了解营养分布对于开发有效解决全球粮食安全和健康差异的解决方案至关重要.
研究的目的:
- 分析全球营养物质供应变化,并使用DELTA Model®解决国家不足问题.
- 根据2020年的数据,预测到2050年未来的粮食生产需要足够的营养.
- 在全球粮食系统模型中开发一种现实的未来需求评估方法.
主要方法:
- 利用DELTA模型®根据全球粮食生产总量估计营养充足度.
- 分析了2020年全球粮食商品和营养物质分布数据.
- 应用了多十年的线性收到国家一级的足够性值,用于未来的预测.
主要成果:
- 虽然全球供应满足了一些营养需求,但许多国家面临维生素A,B12,B2,和铁的缺乏.
- 由于分布问题,许多国家存在严重的蛋白质短缺,尽管全球供应充足.
- 全球蛋白质供应目标增长1%可以解决2020年的不足问题,但如果没有消费变化,到2050年需要增加26%.
结论:
- 全球营养分发是解决国家一级粮食系统不平等问题的关键.
- 调整全球最低营养物质供应目标和改善分配对于可持续,健康的饮食至关重要.
- 将这些见解整合到粮食平衡模型中可以提高预测,并为全球粮食安全政策提供信息.
相关概念视频
02:35Key Elements for Plant Nutrition
18.7K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
18.7K
01:06Primary Production
23.6K
The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.
23.6K
01:49The Nitrogen Cycle
51.8K
Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...
51.8K
01:20Overview of Nitrogen Metabolism
7.9K
Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of ammonia, ammonium ions, nitrate, nitrite, or nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
7.9K
02:11The Roles of Bacteria and Fungi in Plant Nutrition
35.1K
Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.
35.1K
01:46The Calvin Benson Cycle
4.5K
Ribulose 1,5- bisphosphate carboxylase/oxygenase (RuBisCo) is a critical enzyme that catalyzes carbon dioxide assimilation during photosynthesis. However, it is an inefficient enzyme, having an extremely slow catalytic rate. A typical enzyme can process about a thousand molecules per second; however, RuBisCo fixes only around three-carbon dioxides per second. Photosynthetic cells compensate for this slow rate by synthesizing very high amounts of RuBisCo, making it the most abundant single...
4.5K