Lei et al. (2026): Enhanced Rock Weathering Affects Formation of Mineral-Associated Organic Carbon in Soil

Kaiyu Lei, Pedro P. C. Teixeira, Christopher Just, Franz Buegger, Ingrid Kögel-Knabner and Franziska B. Bucka, IN: Environmental Science & Technology Letters, https://doi.org/10.1021/acs.estlett.6c00633

Enhanced silicate rock weathering (ERW) is increasingly considered for climate mitigation through inorganic carbon (IC) formation, yet its effects on soil organic carbon (OC) turnover remain poorly constrained and mechanistically unresolved. The authors investigated how the basalt weathering state influences mineral-associated organic matter (MAOM) in a 6 month microcosm incubation of a slightly acidic Cambisol. Fresh basalt (olivine-rich) and naturally weathered basalt (olivine-depleted and phyllosilicate-enriched) were applied, and ¹³C-labeled straw was used to trace the incorporation of plant-derived C into MAOM.

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