基于Landsat卫星数据的山东临沂市热岛效应研究  

A Study of Heat Island Effect of Linyi City in Shandong Using Landsat Satellite Data

作　　者：曹张驰 胡顺起 朱义青 毛国荣 王庆华 CAO Zhangchi;HU Shunqi;ZHU Yiqing;MAO Guorong;WANG Qinghua(Linyi Meteorological Bureau,Linyi 276004,China)

机构地区：[1]临沂市气象局,山东临沂276004

出　　处：《沙漠与绿洲气象》2021年第6期47-53,共7页Desert and Oasis Meteorology

基　　金：山东省气象局青年基金(2018SDQN19);山东省预报员专项(SDYB 2017-14)。

摘　　要：利用Landsat卫星数据分别反演了2005和2014年临沂市的地表温度和不透水层指数,分析了城市化进程对临沂市热岛效应的影响。结果表明,2005年临沂市表现为中等强度的热岛效应,2014年表现为强热岛效应。利用地面站点资料统计分析得到,2005—2014年临沂市热岛强度总体呈波动增加的趋势,冬季最强,春秋季次之,夏季较弱。分析城市化因子发现,城市经济、人口、用电消耗、城市房屋面积增量等因素对城市热岛强度变化的影响,其相关系数分别为0.86、0.52、0.67、0.81,其中城市经济和房屋面积增量与热岛强度增强密切相关。结合不透水层指数分布的动态变化得出,城市化进程中城镇建筑和硬化路面的增多导致了热岛强度的增加。This paper analyzed the impact of urbanization on the heat island effect of the Linyi city by using the inversion results of Linyi surface temperature and impervious layer index in 2005 and 2014 on the basis of Landsat satellite data. The results showed that the heat island effect of Linyi city was moderate intensity in 2005 but it was high intensity in 2014. Based on the statistical analysis of the ground station data,the intensity of the heat island in Linyi City showed a fluctuating and increasing trend from 2005 to 2014,with the strongest in winter,followed by spring and autumn,and weaker in summer. By analyzing urbanization factors,multiple factors including urban economy,population,electricity consumption,and the increase in urban housing area have an impact on the change of the intensity of urban heat islands. Their correlation coefficients were separately 0.86,0.52,0.67,and 0.81.Among them,the urban economy and housing area were closely related to the increase of heat island intensity. Judging from the dynamic changes in the distribution map of the impermeable layer index,the increase in urban buildings and hardened pavement in the urbanization process caused the increase of the intensity of heat island.

关 键 词：城市热岛效应 Landsat卫星 不透水层 地表温度反演 临沂市 

分 类 号：P407[天文地球—大气科学及气象学]