土壤有机质的含量、分解、合成等动态变化与土壤质量有着密切的联系。SOM模型为定量研究土壤有机质动态变化过程及其变化机制提供了有效途径。本文对国内外现有的土壤有机碳、氮动态模型进行了综述,并对应用最广泛的Century模型、RothC模型以及DNDC模型进行评述,分析了现有SOM模型存在的问题及未来的发展趋势。 Soil organic matter content, decomposition, synthesis and other dynamic changes and soil quality are closely linked. SOM model provides an effective way to quantitatively study the dynamic process of soil organic matter and its change mechanism. In this paper, the current domestic and foreign soil organic carbon and nitrogen dynamics models are reviewed. The Century, RothC and DNDC models are reviewed. The existing problems and future trends of the existing SOM models are analyzed.