关键词: 土壤盐渍化, 土壤有机碳动态, 改良措施, 碳汇潜力

Abstract: This review systematically summarizes the progress of domestic and international research on the effects of farmland salinization on soil organic carbon（SOC）. It focuses on analyzing the effects of salt types and spatial heterogeneity on aggregate structure and organic matter protection，the regulatory mechanisms of microbial diversity and key functional genes on soil organic carbon transformation，and the roles of bio‑organic amendment，physicochemical regulation，and integrated tillage management in enhancing SOC stability. Based on these insights，clarifying salt types and advocating the collaborative application of multi‑omics，regional and cross‑scale approaches are proposed to provide theoretical and practical support for enhancing the carbon sink function of salinized farmland and achieving sustainable governance.

Key words: Soil salinization, Soil organic carbon dynamics, Amendment measure, Carbon sequestration potential