The changing characteristics of the frozen ground are essential indicators of climate change. The soil temperature on the Tibetan Plateau (TP) during 1987–2018 is simulated using the coupled model of RegCM4.7-CLM4.5. The results show that there is a significant warming trend in the soil temperature on the TP, and the warming trend is higher in October–May (0.040 °C∙decade⁻¹) than in June–September (0.026 °C∙decade⁻¹), with the maximum value in February (0.058 °C∙decade⁻¹). Spatially, the warming is most significant in the Three River Source Region (0.15~0.20 °C∙decade⁻¹) and near the Himalayas and Kunlun Mountains (0.20~25 °C∙decade⁻¹), with the warming trend greater in winter and spring than in summer and autumn. Air temperature, total precipitation, maximum snow depth, and maximum frozen ground depth are all significantly correlated to soil temperature. Air temperature (R = 0.851) and total precipitation (R = 0.411) are positively correlated with soil temperature, while maximum snow depth (R = −0.381) and maximum frozen ground depth (R = −0.770) are negatively correlated with it. Air temperature has a strong influence on the soil temperature in all the four seasons, while the effect of the total precipitation is strongest in autumn (R = 0.836). The retarding effects of maximum snow depth and maximum frozen ground depth are strongest in summer (R = −0.772 and −0.35, respectively). The frozen ground on the TP shows a degradation trend, and the consequent hydrological, ecological, and climatic effects deserve sufficient attention.

冻土的变化特征是气候变化的重要指标。采用RegCM4.7-CLM4.5耦合模型模拟1987-2018年青藏高原土壤温度。结果表明，青藏高原土壤温度存在显着增温趋势，10-5月（0.040 °C∙decade ^-1）升温趋势高于6-9月（0.026 °C∙decade ^{-1 ）} )，最大值在 2 月 (0.058 °C∙decade ^-1 )。空间上，三河源区（0.15~0.20 °C∙decade ^-1）和喜马拉雅山和昆仑山附近（0.20~25 °C∙decade ^-1）升温最为显着)，冬春季暖趋势大于夏秋季。气温、总降水量、最大积雪深度和最大冻地深度都与土壤温度显着相关。气温（R = 0.851）和总降水量（R = 0.411）与土壤温度呈正相关，而最大积雪深度（R = -0.381）和最大冻土深度（R = -0.770）与其呈负相关。气温对四个季节土壤温度的影响都很大，而秋季对总降水的影响最强（R=0.836）。最大积雪深度和最大冻地深度的阻滞作用在夏季最强（分别为 R = -0.772 和 -0.35）。青藏高原上的冻土呈退化趋势，随之而来的水文、