Articles | Volume 20, issue 23
Research article
01 Dec 2023
Research article |  | 01 Dec 2023

Ecosystem-specific patterns and drivers of global reactive iron mineral-associated organic carbon

Bo Zhao, Amin Dou, Zhiwei Zhang, Zhenyu Chen, Wenbo Sun, Yanli Feng, Xiaojuan Wang, and Qiang Wang

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Cited articles

Adhikari, D., Poulson, S. R., Sumaila, S., Dynes, J. J., McBeth, J. M., and Yang, Y.: Asynchronous reductive release of iron and organic carbon from hematite–humic acid complexes, Chem. Geol., 430, 13–20,, 2016. 
Anthony, T. L. and Silver, W. L.: Mineralogical associations with soil carbon in managed wetland soils, Global Change Biol., 26, 6555–6567,, 2020. 
Bai, J., Luo, M., Yang, Y., Xiao, S., Zhai, Z., and Huang, J.: Iron-bound carbon increases along a freshwater-oligohaline gradient in a subtropical tidal wetland, Soil Biol. Biochem., 154, 108128,, 2021. 
Barber, A., Brandes, J., Leri, A., Lalonde, K., Balind, K., Wirick, S., Wang, J., and Gelinas, Y.: Preservation of organic matter in marine sediments by inner-sphere interactions with reactive iron, Sci. Rep.-UK, 7, 366,, 2017. 
Berner, R. A.: Sedimentary pyrite formation, Am. J. Sci., 268, 1–23, ajs.268.1.1, 1970. 
Short summary
This study provided a comprehensive analysis of the spatial variability and determinants of Fe-bound organic carbon (Fe-OC) among terrestrial, wetland, and marine ecosystems and its governing factors globally. We illustrated that reactive Fe was not only an important sequestration mechanism for OC in terrestrial ecosystems but also an effective “rusty sink” of OC preservation in wetland and marine ecosystems, i.e., a key factor for long-term OC storage in global ecosystems.
Final-revised paper