基于Landsat影像的太原市城区热岛效应特征分析  

Analysis characteristics of heat island effect based on Landsat image in the urban of Taiyuan

作　　者：张泽秀 周晋红[1] 周鹏 王娇 荆肖军[1] Zhang Zexiu;Zhou Jinhong;Zhou Peng;Wang Jiao;Jing Xiaojun(Taiyuan Meteorological Bureau,Taiyuan Shanxi 030082,China;Lanfang Meteorological Bureau,Langfang Hebei 065000,China)

机构地区：[1]太原市气象局,山西太原030082 [2]廊坊市气象局,河北廊坊065000

出　　处：《环境与发展》2023年第6期87-91,98,共6页Environment & Development

基　　金：山西省气象局气象科研项目(SXKQNDQ20185145);山西省气象局面上科研项目(SXKMSQH20205226)。

摘　　要：利用太原市主城区2000年、2010年和2019年3期Landsat影像反演出地表温度,用均值-标准差法将地表温度划分为6个等级得到相应的太原市主城区热岛区分布图并对其特征及成因进行分析。结果表明:太原主城区的热岛面积呈先减弱后增强的态势;热岛区与建设用地扩展范围在空间上较为吻合,为沿平川地带向南发展;地表温度与植被覆盖度呈显著线性负相关,植被覆盖度每增加0.1,地表温度下降约0.8℃左右;建设用地的地表均温最高,是城市热岛效应加剧的主要因素,植被覆盖区及水体的地表均温较低,有利于缓解热岛效应。Using the Landsat images of 2000,2010and 2019,the surface temperature of the urban area of Taiyuan in each period was inversely calculated,and the mean-standard deviation method was used to divide the surface tem⁃perature into six grades to obtain the heat island grade distribution and analyzed characteristics and its causes.The re⁃sults showed that the heat island area in the urban of Taiyuan City decreases first and then increases,but the intensity of heat island decreased.The expansion of the heat island tallies with that of the construction land in space,both were developed along the plain to the south;There were negative correlation between the surface temperature and the vege⁃tation coverage,and the surface temperature decreased about 0.8℃for every 0.1 increased of vegetation coverage;The average surface temperature of the construction land was the highest,which was the main factor for the intensifica⁃tion of the urban heat island effect,while the average temperature of the vegetation coverage and water area was lower,that contribute to relieve the heat island effect.

关 键 词：城市热岛效应 Landsat影像 植被覆盖度 均值-标准差法 

分 类 号：X83[环境科学与工程—环境工程]