喀什市1961—2007年浅层地温的变化

Soil Temperature Change at Shallow Layer in Kashi City from 1961 to 2007

利用1961—2007年喀什0～40cm各层逐月平均地温,采用气候倾向率和累积距平气候统计方法,研究了近47a喀什浅层平均地温年代际、年际和各季的气候变化特征。结果表明:各层年平均地温以0.1～0.4℃/10a的升温率显著上升,15cm深度的升温率最大;浅层各季节平均地温均呈现为显著的升高趋势,升温率为0.1～0.5℃/10a,春季最大、夏季最小。

By using the modern statistical diagnostic methods such as linear trend analysis and cumulative departure methods, this paper investigated the climate change trend of inter-decadal, annual and seasonal mean soil temperatures at shallow layers in Kashi from 1961 to 2007. The main results as follows： the annual mean soil temperatures in all shallow layers had a significant increasing trend, their rising rates were 0.1/10a-0.4℃/lOa, and the biggest rising rate was in the depth of 15cm; in terms of the season, the all seasonal mean soil temperatures at shallow layers displayed a significant increasing trend in Kashi during past 47 years and their rising rates were 0.1/10a-0.5℃/10a, the maximum and the minimum was in spring and in summer respectively.