三河市40年来地表及浅层地面温度变化趋势分析

摘要

[目的]分析近40年来三河市地表及浅层地面温度变化趋势.[方法]根据三河1971～2010年的逐年及季平均地温资料,采用折线图、趋势图等方法,对40年来三河市的地温变化趋势进行分析.[结果]近40年三河市年地表温度、年地表最高、最低温度均呈上升趋势,且年和季地表温度中均以地表最低温度升温速率最快.5、10、15、20 cm地温的年变化均为下降趋势,以20 cm地温下降速度最为显著；春季5～15 cm地温均呈升温趋势,20 cm略有下降趋势；夏季以20 cm降温速率最为显著；秋季以10 cm升温速率最快；冬季10、15cm升温速率较大,15 cm升温速度最快.[结论]该研究为了解全球变暖对地表及浅层地面温度的影响提供参考依据.%[ Objective ] The aim was to analyze the ground and shallow ground temperature trend in Sanhe in recent 40 years. [ Method J According to the annual and seasonal average ground temperature in 2010, by dint of line charts and trend diagram, the ground temperature in Sanhe City in recent 40 years was discussed. [ Result] The annual ground temperature, annual ground highest and lowest temperature in Sanhe City in recent 40 years was increasing. The lowest temperature in annual and seasonal surface temperature increased most fast. The annual changes of the 5, 10, 15 and 20 cm ground temperature was decreasing and the 20 cm ground temperature decreased most significantly. In spring, the 5-15 cm ground temperature increased and the 20 cm reduced. In summer, the 20 cm temperature decreased significantly. In autumn, the 10 cm ground temperature enhanced fastest. In winter, the 10 cm and 15 cm temperature increase rate was large and the 15 cm temperature increased fastest. [ Conclusion] The study provided reference for the influence of global wanning on the ground and shallow ground temperature.