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通过藏北高原Ｄ１１０点一年中不同深度土壤温度的日最高值、日最低值及日温差的分析，表明从０ｃｍ～４０ｃｍ，土壤温度的日最高值的变化剧烈，而日最低值的变化则相对平稳。冬半年土壤温度的日最低值、日最高值比较接近，日温差较小，而且它们随时间的变化比较平稳；但夏半年（５～９月）波动较冬半年的大，且最高温的波动要比最低温的波动大得多；随深度的增加日温差减小，在８０ｃｍ深处已基本上看不到日温差的变化
Based on the analysis of daily maximum, daily minimum and daily temperature at different depths of soil depth at D110 in the northern Tibet Plateau, the daily maximum of soil temperature from 0cm to 40cm shows a dramatic change, while the daily minimum Relatively stable. In winter, soil daily temperature in the first half of the year was the lowest, the daily maximum was relatively close, and the daily temperature difference was small, and their changes with time were relatively stable. However, the fluctuations of the soil temperature in the summer half year (September-September) Which is much larger than the lowest temperature; the daily temperature difference decreases as the depth increases, and basically no change in the temperature difference at 80 cm has been observed