Soil temperature and moisture are important factors affecting vegetation growth and drought in desert steppe environments. These factors also strongly influence grassland ecosystems. This study interpreted long-term (2009–2019) ground observation data on soil temperature, soil moisture, and meteorological factors from a study area in Inner Mongolia. The monitoring station collected soil moisture, soil temperature, and precipitation data. Covarying relationships indicated how soil properties influence each other throughout the year. Soil temperature was clearly affected by atmospheric changes, solar radiation, and freeze/thaw processes. The surface soil layers showed the greatest degree of variation, while middle and lower layers showed less seasonal variation and smaller differences between daily highs and lows. Surface soil moisture correlates strongly with the vertical temperature decline in soil. Time series revealed major variation in soil moisture throughout the year with lower soil layers showing obvious hysteresis effects. Multi-year soil moisture data allowed for subdivision of the year into seven intervals based maximum and minimum values. Soil temperature showed unique patterns of covariation with soil moisture during different time periods. Differences in soil moisture cause more rapid changes in temperature during soil thawing relative the moisture-induced temperature changes observed 1 month after soil freezing. When soil temperature was greater than 0 °C (32 ℉), soil temperature and soil moisture showed inverse correlation. A dependency of evapotranspiration on soil temperature can explain its effect on soil moisture. When soil temperature fell below 0 °C(32 ℉), soil temperature and soil moisture showed a positive correlation. During an interval defined as the summer fluctuation (SF), precipitation and soil moisture showed a significant positive correlation. During other periods, soil moisture did not clearly covary with precipitation.

在沙漠草原环境中，土壤温度和湿度是影响植被生长和干旱的重要因素。这些因素也强烈影响草原生态系统。这项研究解释了来自内蒙古研究区的长期（2009-2019年）地面温度，土壤湿度和气象因素的地面观测数据。监测站收集了土壤水分，土壤温度和降水量数据。随变的关系表明一年四季土壤特性如何相互影响。土壤温度显然受到大气变化，太阳辐射和冻融过程的影响。表层土壤层表现出最大程度的变化，而中下层表现出较少的季节变化，并且每日高低之间的差异较小。表层土壤水分与土壤垂直温度下降密切相关。时间序列揭示了全年土壤水分的主要变化，较低的土壤层表现出明显的滞后效应。多年的土壤湿度数据可以根据最大值和最小值将年份细分为七个间隔。在不同时间段内，土壤温度显示出与土壤水分协变的独特模式。相对于土壤冻结后1个月观察到的水分引起的温度变化，土壤水分的差异会导致土壤解冻过程中温度发生更快的变化。当土壤温度高于0°C（32℉）时，土壤温度与土壤水分呈反相关关系。蒸散量对土壤温度的依赖性可以解释其对土壤水分的影响。当土壤温度降至0°C（32℉）以下时，土壤温度与土壤水分呈正相关。在定义为夏季波动（SF）的时间间隔内，降水量和土壤湿度显示出显着的正相关。在其他时期，土壤水分并没有明显地随降水而变化。