Abstract: Based on the 10-m gradient detection system at Taklimakan Atmosphere and Environment Observation Experiment Station in the hinterland of the Taklimakan Desert, the characteristics of surface albedo and multilayer soil temperature and moist and their relationship under snow cover are analyzed by using the meteorological and radiation data. The results showed that the surface albedo changes between 0.18 and 0.97 under snow cover, and the average value is 0.60. The daily variation of surface albedo tends to reverse "J" and the value in the morning is bigger than in the evening, and the average difference is 0.13. Snow makes the 0-40 cm depth soil temperature decrease, and soil temperatures at different layers are close to each other when soil moisture increases after the snow. Except the soil layer of 40 cm depth, the existence of snow makes the daily variation range of 0 cm, 10 cm, 20 cm soil temperature decrease by 41%, 39%, 39%, respectively. There is a negative correlation relationship between surface albedo and surface temperature under snow cover. Namely, high surface albedo corresponds to low surface temperature, and the correlation coefficient is -0.71. Under snow cover, surface albedo and 5 cm depth soil moisture present a negative correlation, and the high surface albedo corresponds to low soil moisture, and low surface albedo corresponds to high soil moisture, and the correlation coefficient is -0.74.

Key words: Taklimakan Desert, snow underlying surface, surface albedo, soil temperature, soil moisture