Burial of organic carbon (OC) in rift lakes on plateau is an important part of the global cycle. It is affected by natural and anthropogenic factors. In this study, we selected the sediment records of 7 rift lakes on the Yunnan-Guizhou Plateau to study spatial-temporal variation, sources and driving factors of organic carbon burial since 1850. The analysis of the temporal and spatial trend of carbon burial shows that the TOC concentration, TOC flux, C: N and mass accumulate rate have increased significantly since 1850. Co-occurrence network analysis indicated that a strong correlation between the TOC concentration and silty. TOC concentration were identified as core genera due to their high concentration. Carbon isotope tracing results show that before 1950, endogenous OC input played a dominant role, and after 1950, the proportion of exogenous OC increased. Canonical correlation analysis indicated that after 1950, agriculture intensification and population increase become one of the factors affecting the carbon burial of lakes in this area. The result of this study indicate that anthropogenic factors have become the main factors promoting carbon burial in rift lakes on the plateau.

高原裂谷湖中有机碳的埋藏是全球循环的重要组成部分。它受自然和人为因素的影响。本研究选取云贵高原7个裂谷湖沉积物记录，研究1850年以来有机碳埋藏的时空变化、来源及驱动因素。碳埋藏时空趋势分析表明： TOC 浓度、TOC 通量、C:N 和质量积累率自 1850 年以来显着增加。共生网络分析表明 TOC 浓度与粉质之间有很强的相关性。TOC 浓度因其高浓度而被确定为核心属。碳同位素示踪结果表明，1950 年以前，内源 OC 输入占主导地位，1950 年以后，外源性OC的比例增加。典型相关分析表明，1950年后，农业集约化和人口增加成为影响该地区湖泊碳埋藏的因素之一。研究结果表明，人为因素已成为促进高原裂谷湖泊碳埋藏的主要因素。