The storage of organic carbon in the soils of salt marshes and other coastal blue carbon ecosystems has gained considerable attention by the scientific community for more than a decade now, while the relevance and mechanisms of soil inorganic carbon accumulation remain poorly understood. Using long‐term annual accretion monitoring over 17 years in N = 50 permanent plots distributed across a 1050‐ha salt‐marsh complex of the European Wadden Sea, we identified clear relationships between salt‐marsh vertical growth rates and the soil densities of inorganic and organic carbon. Specifically, we demonstrate a strong positive correlation between vertical accretion and inorganic carbon density while observing a strong negative correlation between vertical accretion and organic carbon density. This decoupling observed between inorganic and organic soil carbon stocks was governed by plant community composition and associated plant traits, which controlled sedimentation processes.

中文翻译：

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植物-沉积物相互作用使盐沼土壤中的无机碳储量与有机碳储量发展脱钩

十多年来，盐沼和其他沿海蓝碳生态系统土壤中有机碳的储存引起了科学界的广泛关注，而土壤无机碳积累的相关性和机制仍然知之甚少。使用 17 年来的长期年度吸积监测氮= 50 个永久地块分布在欧洲瓦登海 1050 公顷的盐沼综合体中，我们确定了盐沼垂直生长率与土壤无机碳和有机碳密度之间的明确关系。具体来说，我们证明垂直吸积和无机碳密度之间存在很强的正相关性，同时观察到垂直吸积和有机碳密度之间存在很强的负相关性。无机和有机土壤碳储量之间观察到的这种脱钩受到植物群落组成和相关植物性状的控制，这些性状控制着沉积过程。