灌限制影响了现有农田的多种作物扩张的全球潜力
Felicitas D Beier1,2, Jens Heinke1, Benjamin Leon Bodirsky1
1Potsdam Institute for Climate Impact Research (PIK), Member of the Leibniz Association, Potsdam, Germany.
概括
扩大多种作物种植,特别是通过灌,可以大大提高现有土地的全球粮食生产. 这种方法可以大幅提高产量,而不需要更多的耕地,有助于可持续地满足未来的需求.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 全球粮食安全 全球粮食安全
背景情况:
- 多种作物通过每年实现多种收获来提高土地生产力.
- 在季节性干旱的热带地区,灌对于多种作物至关重要,允许多种收获.
- 之前的研究估计了多种作物的潜力,但没有评估灌扩张在全球的作用.
研究的目的:
- 估计现有耕地上多种作物扩张的全球潜力.
- 评估灌扩张对多种作物潜力的影响.
- 为了确定年度产量和作物生产的潜在增长.
主要方法:
- 量化多种作物扩张潜力,考虑到灌和水的可用性.
- 分析了灌,水资源限制和多种作物系统之间的相互作用.
- 在当前气候条件下建模的潜在产量和生产收益.
主要成果:
- 显著的全球生物物理潜力存在于扩大现有耕地上的多种作物种植,特别是用灌.
- 全球农作物总产量可能增加28% (至5.4亿干物质).
- 扩张涉及增加雨水多种作物,增强灌多种作物,并使用灌来实现额外的生长季节.
结论:
- 在现有土地上挖掘多种作物潜力,可以帮助满足未来的农业需求,避免进一步扩张耕地.
- 当地的水资源供应是灌多种作物的关键限制.
- 综合土地和水评估至关重要,考虑到生物物理,社会经济因素和可持续性标准.
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