关键词: 浅层地温, 气候倾向率, 异常年份

Abstract: By using monthly mean temperature in depth of 0-20 cm from 1960 to 2007 at Linyi meteorological station,the variation of average shallow geothermal was analyzed in Linyi in recent 48 years.The results showed that average shallow geothermal in each season increased with the rate of 0.053～0.381℃/10years.The max change was in spring and min change was in summer.Annual average shallow geothermal in each lever significant increased by 0.215～0.297℃/10years,the rate of temperature in depth of 0cm was biggest.Annual average shallow geothermal in the middle 1960s-1980s was cold periods,and that in the late 1980s-1990s was warm periods.The main reasons of impact on geothermal increasing were the increasing temperature and the decreasing precipitation.The result could provide a reference to utilizing climatic resources and adjusting planting division and distribution of agricultural production.

Key words: Shallow geothermal, Climatic tendency, Abnormal year