ArticleScientific reports2021
Iron oxides and aluminous clays selectively control soil carbon storage and stability in the humid tropics.
Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 116 citations in OpenAlex.
- The Impact of Sodium Hexametaphosphate Use in Soil Fractionation Protocols on Downstream Mineral Analyses.ACS omega · 2026Article
- Microbial responses under sunlight-dark conditions accelerate sequestration and transformation of soil biogenic, redox and non-redox components, including As and Hg.Scientific reports · 2025Article
- Sulfur-mediated transformation, export and mineral complexation of organic and inorganic C, N, P and Si in dryland soils.Scientific reports · 2025Article
- Silicon-iron modified biochar remediates cadmium and arsenic co-contaminated paddy soil by regulating cadmium and arsenic speciation.Frontiers in microbiology · 2025Article
- Important role of Fe oxides in global soil carbon stabilization and stocks.Nature communications · 2024Article
- Research on the Quantitative Inversion of Soil Iron Oxide Content Using Hyperspectral Remote Sensing and Machine Learning Algorithms in the Lufeng Annular Structural Area of Yunnan, China.Sensors (Basel, Switzerland) · 2024Article
- Carbon Fate, Iron Dissolution, and Molecular Characterization of Dissolved Organic Matter in Thawed Yedoma Permafrost under Varying Redox Conditions.Environmental science & technology · 2024Article
- Mineral-mediated stability of organic carbon in soil and relevant interaction mechanisms.Eco-Environment & Health · 2024Review
- Sphagnum increases soil's sequestration capacity of mineral-associated organic carbon via activating metal oxides.Nature communications · 2023Article
- Isolation of dissolved organic matter from aqueous solution by precipitation with FeClScientific reports · 2023Article
- Interrelationships among mountain relief, surface organic layer, soil organic carbon, and its mineral association under subarctic forest tundra.Scientific reports · 2022Article
Corrections and comments
- Erratum issued
Authors and funding
9 authors at 6 institutions in 5 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Clay minerals and pedogenic metal (oxyhydr)oxides are the most reactive soil mineral constituents controlling the long-term persistence of organic carbon (OC) in terrestrial ecosystems. However, their co-occurrence in most soils complicates direct assessment of their individual contribution to OC persistence. Making use of unique mineralogical combinations in soils located in the East Usambara Mountains of Tanzania, we disentangled the contribution of clay-sized aluminous minerals (kaolinite, gibbsite) and pedogenic Fe (oxyhydr)oxides (predominant goethite and hematite) on OC storage and stabilization under natural forests and croplands. Topsoil samples, varying in contents but not types of aluminous clays and pedogenic Fe (oxyhydr)oxides, were identified by selective extractions, X-ray diffraction, and Mössbauer spectroscopy. Associated abundance of particulate and mineral-associated organic matter (OM) was quantified by density fractionation and their changes during land-use conversion were determined as a measure of OC persistence. Additionally, we assessed the resistance of OC to chemical oxidation as well as microbial decomposition in a 50-day laboratory incubation. We found that the ratio of pedogenic Fe to aluminous clay is more consequential for OC storage and stabilization than their individual contents, despite the fact that Fe (oxyhydr)oxides generally exert a stronger impact on OC than aluminous clays. Conjunction of large amounts of Fe (oxyhydr)oxides with low aluminous clay contents caused the strongest accumulation of mineral-associated OC, a low soil respiration, high OC stability against chemical oxidation, and high OC persistence during land-use change. Our study suggests that certain mineralogical combinations in the humid tropics alleviate OM losses during land conversion because of the strong and selective mineral control on OC stabilization, particular if the weight ratio of pedogenic Fe to aluminous clay exceeds the threshold range of 0.44‒0.56.
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Registered trials
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