近45年大同地区热量条件变化研究

The Study of Heat Changes in Datong Area in Recent 45 Years

为了摸清大同地区近45年来热量资源变化规律，使其得到充分利用，本文采用描述性统计方法及九点二项式平滑法，分别对大同地区1961年-2005年的气温、气温日较差以及≥0℃和≥10℃活动积温和持续日数等表征热量条件的资料进行分析。结果表明：该地区的年平均气温呈明显的升高、气温日较差总体呈减小、积温呈增加的趋势，即热量资源呈现不断增加的趋势。

For discovering the changing law of heat resources in Datong in the past 45 years to fully utilize it, the temperature, diurnal temperature range and the accumulated temperature of ≥0℃and ≥10℃ and day numbers of duration in 1961-2005 year in Datong were analyzed through statistical methods. The results showed that： the region＇s annual average temperature was significantly increased, the overall diurnal temperature range was decreased, there was the trend of increase in accumulated temperature, that is, a constant heat resources increase.