Abstract: The climate tendency rate method was used to analyze the tendency of the shallow geothermal changes of
Dabancheng. The results showed that the shallow ground temperature increased gradually. The ground temperature of 0 cm has the largest climate tendency rate of 0.779˚C/10a, which decreases from shallow to deep in turn. 5 cm, 10 cm, 15 cm, 20 cm ground temperature climate tendency rate is 0.648˚C/10a, 0.630˚C/10a, 0.564˚C/10a, 0.527˚C/10a respectively. The warming trend of each layer is most obvious in summer with the tendency rate reaching 0.807˚C/10a, which is followed by spring and autumn with the rate of 0.770˚C/10a and 0.687˚C/10a respectively. Mutation analysis showed that the shallow ground temperature was mutated to increase in 1997. Partial correlation analysis method was used to analyze of the reason why the ground temperature of Dabancheng increased. The results showed that average temperature and sunshine duration were positively correlated with ground temperature, and precipitation and rage wind velocity were negatively correlated with temperature. The positive impact of air temperature increase and wind speed decrease on the ground temperature is likely to exceed the negative impact of increase in rainfall and reduction in sunshine time on the geothermal, so temperature increased significantly.