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建设土壤以减少气候变化对全球作物产量的影响

Xi Deng¹, Yao Huang², Wenping Yuan¹

¹School of Atmospheric Sciences, Key Laboratory of Tropical Atmosphere-Ocean System (Ministry of Education), Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-Sen University, Zhuhai 519000, China.

The Science of the total environment

|August 31, 2023

概括

改善土壤健康,特别是土壤有机碳 (SOC),对于减轻气候变暖对全球作物产量的影响至关重要. 提高SOC可以显著减少玉米,小麦,大米和大豆等主要作物的产量损失.

科学领域:

农业科学农业科学
气候科学气候科学
土壤科学土壤科学

背景情况:

可持续的粮食生产依赖于健康和有弹性的土壤.
土壤特性对作物产量应对气候变暖的影响尚未完全理解.
全球农作物生产率面临着气候变暖带来的挑战.

研究的目的:

研究土壤在调节作物产量和应对气候变暖方面的作用.
量化土壤有机碳 (SOC) 对在变暖下产量变化的影响.
评估改善粮食安全的SOC的潜力.

主要方法:

利用主要作物 (玉米,小麦,大米,大豆) 的全球规模数据集.
采用随机森林建模来分析产量反应.
研究了土壤有机碳 (SOC) 作为土壤质量关键指标的影响.

主要成果:

每升温1°C都会使全球玉米,小麦,大米和大豆的产量分别减少3.4%,2.4%,0.3%和5.0%.
土壤有机碳 (SOC) 主要解释了变暖引起的产量影响的空间变化.
改善SOC显著降低了预计的产量损失,在种植面积的很大比例上产生了好处.

结论:

土壤健康,特别是SOC,对于减轻气候变暖对作物产量的负面影响和确保粮食安全至关重要.
可持续的土壤改善实践可以减轻气候变暖引起的产量损失,提高全球粮食生产.
加强土壤碳捕获为全球主要作物和粮食系统带来了巨大的好处.

关键词:

粮食安全粮食安全玉米玉米玉米是一种大米大米大米大米大米土壤有机碳土壤有机碳豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆豆小麦小麦小麦小麦的小麦.收益率损失收益率损失的情况收益率的弹性收益率的弹性

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