Mineral and Microbial Properties Drive the Formation of Mineral‐Associated Organic Matter and Its Response to Increased Temperature

)] but to decrease with the relative abundance of Gammaproteobacteria and Actinobacteria across the plateau. Moreover, a notable decline in MAOM formation efficiency was observed under elevated temperatures, which was concomitant with a reduction in the content and reactivity of Fe oxides, as well as the microbial assimilation of the labelled substrate. The attenuation of mineral-organic associations was identified as the primary factor contributing to the warming-induced reduction in MAOM formation. These findings highlight the necessity of incorporating organo-mineral associations and microbial properties into Earth System Models to accurately project soil C dynamics under changing climate.