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土壤有机物中的碳分量作为全国范围的土壤过程指标

Sabine Reinsch¹, Inma Lebron¹, Lis Wollesen de Jonge²

¹UK Centre for Ecology and Hydrology, Bangor, UK.

Global change biology

|October 30, 2025

概括

土壤有机碳 (SOC) 分数,有机颗粒物 (POM) 和与矿物相关的有机物 (MAOM) 与各种息地的植被碳密切相关. 这种关系有助于预测土壤碳分布,并为土地管理策略提供信息.

科学领域:

土壤科学土壤科学
生态生态学生态生态学
生物地质化学生物地质化学

背景情况:

土壤有机物 (SOM) 对于生态系统的碳储存至关重要,包括微粒有机物 (POM) 和矿物相关有机物 (MAOM).
了解土壤有机碳 (SOC) 和其微分之间的相互作用是预测分解和储存动态的关键.

研究的目的:

调查 SOC 在 SOM (f_OC) 中的分数,息地类型,土壤特性,以及 SOC 在 POM 和 MAOM 分数中的分布之间的关系.
使用广泛可用的 f_OC 数据建立 SOC 分数的预测模型.

主要方法:

编制和分析了14个数据集,包括来自不同欧洲和全球站点的9503个测量结果.
在矿物和有机土壤中检查了f_OC,将其与息地梯度 (海草,永久土,耕地,草地,林地) 和土壤特性相关联.

主要成果:

在POM和MAOM中发现了f_OC,息地,土壤特性和SOC分布之间的强烈相关性.
f_OC值在0.38到0.58之间,在息地中显示出不同的模式,在海草和永久土中最低值,在半自然草原中最高值.
植被中的碳含量与各种息地中的SOC和SOM含量有显著联系.

结论:

植被碳和SOC分数之间的紧密联系为预测POM和MAOM碳的空间变化提供了一种新的方法.
调查结果可以为农业土壤管理,土地利用规划 (如林地) 和与气候有关的SOC目标监测提供信息.

关键词:

分解,分解,分解.谦卑谦卑谦卑谦卑土地使用情况土地使用情况在点火时的损失.土壤健康土壤健康土壤有机碳土壤有机碳土壤有机物质分量土壤有机物质分量土壤类型土壤类型

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The Carbon Cycle

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Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.

The Soil Ecosystem

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