近53年邢台地区气温和无霜期变化趋势分析

目的]研究近53年邢台地区气温和无霜期变化趋势。方法]根据邢台市和南宫县1958～2010年的气候资料,对邢台地区的气温及初霜日、终霜日、无霜期日数变化趋势进行一些统计分析,探讨近53年来该地区气温和无霜期的变化规律。结果]无论城市或农村,年平均气温均呈升高趋势,邢台和南宫的气候倾向率分别为0.5、0.2℃/10a,尤其自1996年以后,年平均气温升高趋势约1.0℃/10a;四季平均气温均呈上升趋势,且与年平均气温升高幅度大致相当,其中冬季平均气温增幅最大,年平均气温的升高主要是由于冬季平均气温的升高引起的;城市的年平均气温明显高于农村,体现出城市的热岛效应特征。无论城市或农村,初霜日、终霜日、无霜期日数均呈现出相同趋势,即初霜日推迟,终霜日提前,无霜期日数明显延长;城市的初霜日晚于农村,终霜日则早于乡村,无霜期日数明显长于农村,间接受到城市热岛效应的影响。结论]该研究为邢台地区热量资源的开发和利用提供理论依据。

Analysis of the Changes Trend of Temperature and Frost-free Period in Xingtai in recent 53 years

Objective] The changes trend of temperature and frost-free period in Xingtai in recent 53 years were studied.Method] According to the climate data of Xingtai City and Nangong County in 1958-2010,the changes trend of the temperature,the first and the last frost day,and the frost-free days in Xingtai was studied.The characteristics of the changes of temperature and frost-free days in Xingtai in recent 53 years were studied.Result] No matter city or countryside,the annual average temperature was increasing....