Fig. 7

A conceptual model for the sequestration of C, S, and N, which highlights the simultaneous maintenance of sequestration (S2- ↔ S°) and reduction-oxidation (redox: S° ↔ SO42- ↔ S2-/S22- ↔ SO42‒) processes by soil microorganisms during the transformation of organo-mineral components in the drying-affected soils. This leads to the exports of their LS-forms (DOCLS, HSLS, NO3‒LS, NH4 + LS, NO2‒LS, PO43‒LS, SiO32‒LS and SO42‒LS) and mineral neoformation of their CS-forms (DOCCS/HSCS, NO3‒CS, NH4 + CS, NO2‒CS, PO43‒CS, SiO32‒CS and SO42‒CS).