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利用1961—2010年巴楚0~40 cm逐月平均地温资料,采用气候倾向率和累积距平气候统计方法,探讨近50 a巴楚县不同深度的地温变化特征,研究巴楚县气候变化对当地农、林果业生产以及生态环境的影响。结果表明:这半世纪来,巴楚县浅层地温的年、季平均值呈现出不同程度的上升趋势,其中40 cm的年升温率和夏季的升温率最大。近10 a来,巴楚县地温明显升高,浅层地温的年、季平均或平均最高、最低等均明显高于前40 a。随着巴楚县地温的上升,年极大冻土深度的变薄趋势也很明显,导致当地冬小麦返青期和林果业的树木萌动期提前。
Based on the monthly average geothermal data from 0 to 40 cm in Bachu from 1961 to 2010, the geothermal trend and cumulative anomaly climatic statistic method were used to investigate the characteristics of the geothermal changes at different depths in Bachu County in the past 50 years. Local agriculture, forestry and fruit industry and the impact of ecological environment. The results show that in the past half century, the annual and seasonal mean values of shallow ground temperature in Bachu County show a rising trend to some extent, of which the annual warming rate at 40 cm and the warming rate in summer are the highest. In the recent 10 years, the ground temperature in Bachu County increased obviously, and the annual, seasonal or average maximum and minimum of shallow ground temperature were significantly higher than those of the first 40 years. With the increase of geothermal temperature in Bachu County, the trend of thinning the depth of extremely frozen soil is obvious, resulting in the early adventitious germination of the trees during the returning period of winter wheat and the fruit industry.