Plant-sediment interactions decouple inorganic from organic carbon stock development in salt marsh soils

IF 5.1 2区 地球科学 Q1 LIMNOLOGY Limnology and Oceanography Letters Pub Date : 2024-03-09 DOI:10.1002/lol2.10382
Dirk Granse, Antonia Wanner, Martin Stock, Kai Jensen, Peter Mueller
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Abstract

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.

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植物与沉积物的相互作用使盐沼土壤中无机碳储量与有机碳储量的发展脱钩
十多年来,盐沼和其他沿岸蓝碳生态系统土壤中的有机碳储存问题受到了科学界的广泛关注,但人们对土壤无机碳积累的相关性和机制仍然知之甚少。通过对分布在欧洲瓦登海 1050 公顷盐沼复合体中的 N = 50 个永久性地块进行长达 17 年的长期年度累积监测,我们发现盐沼垂直生长率与土壤中无机碳和有机碳密度之间存在明确的关系。具体来说,我们证明了垂直增生与无机碳密度之间存在很强的正相关性,同时观察到垂直增生与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的脱钩受植物群落组成和相关植物性状的影响,而植物群落组成和相关植物性状又控制着沉积过程。
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来源期刊
CiteScore
10.00
自引率
3.80%
发文量
63
审稿时长
25 weeks
期刊介绍: Limnology and Oceanography Letters (LO-Letters) serves as a platform for communicating the latest innovative and trend-setting research in the aquatic sciences. Manuscripts submitted to LO-Letters are expected to present high-impact, cutting-edge results, discoveries, or conceptual developments across all areas of limnology and oceanography, including their integration. Selection criteria for manuscripts include their broad relevance to the field, strong empirical and conceptual foundations, succinct and elegant conclusions, and potential to advance knowledge in aquatic sciences.
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