The partitioning patterns and retention turnover of soil organic carbon (SOC) in peat bogs are closely related to vegetation, hydrology and soil factors. Research on SOC partitioning patterns in peat bogs in alpine regions in relation to vegetation and soil factors can contribute to the understanding of carbon sequestration mechanisms in peat bogs. In this paper, the Gahai Wetland of international importance on the Qinghai-Tibet Plateau was selected as the experimental site. Three inundation gradient sample plots, SI (heavily inundated zone), SII (moderately inundated zone) and SIII (lightly inundated zone), were established along the vertical shoreline of the lake as the starting point to study the distribution characteristics of the SOC content of peat bogs at different profile depths. The results showed that, horizontally, the SOC content in the three inundation gradients were as follows: SI > SII > SIII, vertically, the SOC content was the highest in the surface layer and showed a decreasing trend from the surface layer to the deep layer with increasing soil depth. All soil factors except bulk density and pH showed a decreasing trend and were significantly different (P < 0.05). The results of the path analysis showed that the effect on SOC content was in the order of soil water content > alkaline nitrogen > total nitrogen > bulk weight, indicating that these four soil factors were the dominant factors affecting the variation in SOC content, their combined effect also played a major role in regulating the SOC content (P < 0.01).

泥炭沼泽土壤有机碳（SOC）的分配模式和保留周转与植被、水文和土壤因素密切相关。研究高寒地区泥炭沼泽的 SOC 分配模式与植被和土壤因素的关系，有助于了解泥炭沼泽的固碳机制。本文选择青藏高原具有国际重要意义的尕海湿地作为实验场地。以湖泊垂直岸线为起点，建立SI（重度淹没区）、SII（中度淹没区）和SIII（轻度淹没区）3个淹没梯度样地，研究湖区SOC含量的分布特征。不同剖面深度的泥炭沼泽。结果表明，水平方向上，3个淹没梯度下的SOC含量依次为：SI>SII>SIII；垂直方向上，SOC含量以表层最高，从表层到深层呈递减趋势。随着土壤深度的增加。除容重和pH外，其他土壤因子均呈下降趋势，且差异显着（P < 0.05）。通径分析结果表明，对 SOC 含量的影响大小顺序为：土壤含水量 > 碱氮 > 全氮 > 容重，说明这 4 个土壤因子是影响 SOC 含量变化的主导因素，它们的组合效应对 SOC 含量也起到了主要调节作用（P  < 0.01）。