Variation Characteristics of Shallow Soil Temperature on Different Underlying Surfaces and Its Response to Air Temperature in the Greater Khingan Mountains of Inner Mongolia of Inner Mongolia
Based on the shallow soil temperature and air temperature observation data of Ewenki and Tulihe station from 2005 to 2022,the temporal evolution characteristics of shallow soil temperature and its response to air temperature in these area were systematically analyzed by using linear tendency estimation and Mann-Kendall test.The results showed that the annual average air temperature was lower than the soil temperature of each layer in both grassland and forest areas.The deeper the soil depth in grassland area and forest area,the lower the soil temperature.The climatic tendency rate of annual shallow soil temperature in forest area was greater than that in grassland area.The spring air temperature variation had a significant influence on the annual air temperature variation in the grassland area.In the forest area,the shallow soil temperature variation of 0～20 cm depth in spring and winter had a great contribution to the annual shallow soil temperature variation.In spring and summer,there was a strong correlation between the shallow ground temperature variation and the air temperature variation in grassland area and forest area.In winter,the shallow soil temperatures of two stations were not sensitive to air temperature change,which may be due to the influence of different degrees of snow cover.The correlation between annual mean shallow soil temperature change and air temperature change in grassland was not obvious,and the shallow soil temperature variation of 0～20 cm depth had a strong correlation with air temperature variation in forest region.
Air temperatureSoil temperatureClimate tendency rateThe Greater Khingan Mountains of Inner MongoliaGrasslandForest region
万方数据
维普
