1971-2010年沧州市浅层地温变化趋势分析

摘要

Based on the data of mean shallow layer ground temperature for all years and seasons in Cangzhou City from 1971 to 2010, using the line graph, climate change rate analysis method, the geothermal trend during recent 40 years in Cangzhou City was analyzed. The result showed that ground temperature of 0 cm,5 cm,15 cm and 20 cm presented yearly and montly increasing trend in Cangzhou City in the past 40 years. The yearly variation rising speed was the most significant in 15 cm. The ground temperature of 5 cm to 20 cm in spring showed a rising trend, and the rising rate was the most significant at 15 cm. The ground temperature of 5 cm to 10 cm in summer showed a decline trend, and the decline rate was the most obvious at 10 cm. The ground temperature of 15cm to 20 cm showed a rising trend, and the rising rate was the most obvious at 15 cm. Shallow ground temperature of 5 cm to 20 cm in autumn showed decline trend, and the drop trend was the most obvious at 5 cm. The ground temperature of 15 cm in winter increased fastest. The research provided reference for the understanding the effects of global climate warming on terrestrial and shallow ground temperature.%根据1971-2010年沧州市逐年及季平均浅层地温资料，采用折线图、气候变率等分析方法，对40年来沧州市浅层地温变化趋势进行分析，结果发现近40年沧州市5、10、15、20 cm地温的月变化、年变化均为上升趋势，年变化以15 cm地温上升速度最为明显；春季5~20 cm地温均呈升温趋势，以15 cm地温上升较为明显；夏季5~10 cm 地温呈降温趋势，10 cm 降温速率最快，15~20 cm 呈升温趋势，15 cm地温升温速率最快；秋季5~20 cm地温均呈降温趋势，以5 cm地温降温速率最快；冬季5~20 cm地温均呈升温趋势，以15 cm地温升温速率最快。该研究为了解全球气候变暖对地面及浅层地面温度的影响提供参考依据。