【摘要】 通过城郊对比分析,使用1959-2007年3个指标值(月平均气温、平均最低气温、平均最高气温)表征西安市热岛效应,引入突变分析法对近49 a西安市热岛效应历年、季节变化特征及其原因进行分析。结果表明:西安热岛效应年变化趋势呈直线型,升温率为0.322℃/10 a,存在1980年、1993年两个突变年,热岛效应上升的主要贡献是低温升高;西安热岛效应季节变化,春季最强,冬、夏季次之,秋季最弱;西安热岛效应与人口数量之间有很强的线性关系,城市发展影响热岛效应季节变化,表现为春季最大,冬、春次之,夏季最小。更多还原

【Abstract】 Based on the comparative analysis of city and suburbs,using data of Xi’an urban heat island effect from 1959 to 2007,the introduction of sudden change analytic method and every year’s urban population of Xi’an,49 years’ seasonal changing characteristics of heat island effect in Xi’an and their causes were analyzed,which indicated that: Xi’an heat island effect rose up in a form of straight line at 0.322℃/10 a and there were two sudden change years,namely 1980,1993.The main contribution to the heat island effect is the rise of relatively low temperature.Xi’an heat island effect changes seasonally,the strongest in spring,followed winter and summer,and autumn the weakest.There is a strong linear relationship between the heat island effect and population.The city’s development has an impact on the seasonal changes of heat island effect,the strongest in spring,followed in winter,and summer and autumn the lowest.更多还原