Abstract: The relationship between land surface temperature and near-surface air temperature serves as a critical foundation for understanding the interaction between subsurface and near-surface atmosphere, and is also vital for maintaining efficient energy circulation and enhancing climate environment. The natural characteristics of karst areas substantially differ from those of non-karst areas, resulting in divergent patterns of energy transfer between land and atmosphere in these distinct environments. Based on pairwise nearest-neighbor pixel selection, we acquired land surface temperature and near-surface air temperature data for Ziyun and Wangmu counties in southwest Guizhou from 2000 to 2018. Subsequently, we compared and analyzed the discrepancies between karst and non-karst areas. Our findings indicate that: 1) The disparities and fluctuations between land surface temperature and near-surface air temperature are more pronounced in karst area than in non-karst area on an annual average basis, with greater energy transfer stability observed in non-karst area. 2) In seasonal scale, the difference between land surface temperature and near-surface air temperature is more prominent in karst area than non-karst area during spring, summer, and autumn, albeit not in winter. Additionally, the fluctuation of the difference is greater in winter in karst area, with greater energy transfer stability in karst area throughout all four seasons. 3) As for individual months, the difference between land surface temperature and near-surface air temperature is more evident in the karst area compared to the non-karst area in each month, with greater fluctuations observed in April in the karst area. However, excluding March and April, energy transfer between land and atmosphere is more stable in non-karst area throughout the other months. The results can serve as a valuable reference for analyzing surface environmental patterns, studying climate change, and safeguarding the ecological environment.

Key words: land surface temperature, near-surface air temperature, differences, karst area, non-karst area