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全球潜力通过减少半干旱地区的旋转沉降来增加土壤碳储存

Chang Liang¹, Bert VandenBygaart², Stephen Ogle³

¹Pollutant Inventories and Reporting Division, Environment and Climate Change Canada, Gatineau, Quebec, Canada.

Global change biology

|December 26, 2025

概括

在作物系统中减少露天休产可以促进土壤有机碳 (SOC) 的储存. 消除休使SOC平均增加3.2MgCha-1 ,根据土壤类型和休减少的持续时间,收益有所不同.

科学领域:

农业科学农业科学
土壤科学土壤科学
环境科学环境科学

背景情况:

强化作物种植系统可以增强土壤有机碳 (SOC) 的储存.
裸露休产做法可以耗尽SOC库存.
了解地减少对国有企业的影响对于可持续农业至关重要.

研究的目的:

在全球范围内量化SOC储存的变化,这是由于减少农业土壤中裸露耕作的结果.
评估土壤质地,休减少时间,土壤类型和干旱度等因素如何影响SOC积累.

主要方法:

编制和分析了全球实验中公布的数据,评估了减少裸露放牧对SOC的影响.
估计SOC变化,每年减少地.
研究了土壤质地,地减少时间,土壤类型和干旱度指数对SOC储存的影响.

主要成果:

消除露天休使SOC库存平均增加了3.2 (±0.3) Mg C ha-1 .
减少休的每一年都导致SOC平均库存增加443 (±34) 公斤 C ha-1 .
SOC积累率因土壤质地 (细,中,粗) 而有所不同,随着地减少时间的增加而随着时间的推移而下降.

结论:

减少耕作系统的空置是一个有效的策略,可以在全球范围内增加土壤有机碳储存.
这种做法可以为减缓气候变化的努力做出贡献,例如实现"巴黎协定"的国家自主贡献.
通过广泛减少裸露地实践,可以实现显著的全球SOC储存收益.

关键词:

一个裸露的草.储存碳的方法是碳储存.土壤有机碳土壤有机碳土壤类型土壤类型夏季草 - 夏季草质地质地质地

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