2008年南京市热岛效应演变特征及其对城市居民生活影响

利用2008年南京市23个自动气象观测站气温资料,分析南京市城市热岛效应的空间分布及其变化特征。结果表明：南京市的热岛中心主要分布在人口和建筑物密集的鼓楼、白下区和建邺区,下关、江宁和浦口等城区气温较低;2008年南京市平均城市热岛强度为1.6℃,四季热岛强度呈秋季、春季、冬季和夏季依次减弱;南京市城市热岛效应对城市居民生活影响较大。南京市热岛效应的逐渐增强,将导致夏季空调使用量的增加,增加能耗对创建低碳城市、建设和谐城市生活产生消极影响。

Evolution of urban heat island effect in 2008 and its influence on resident life in Nanjing,Jiangsu province

Based on air temperature data from 23 automatic weather stations in 2008 in Nanjing,the spatial distribution characteristics of urban heat island effect were analyzed.The results indicate that the center of urban heat island effect is located in Gulou,Baixia and Jianye districts where the population and buildings are dense,whereas the air temperatures in the districts of Xiaguan,Jiangning and Pukou are lower.The mean urban heat island intensity reaches 1.6 ℃ in 2008 in Nanjing.The intensity of urban heat island weakens seasonally in a order of autumn,spring,winter and summer,respectively.The influence of urban heat island effect on resident life is obvious in Nanjing.This effect increases gradually and leads to the increase in air condition usage in summer.At the same time,it is disadvantageous to establish low carbon city and construct harmonious urban life.