基于Landsat8影像的昆明市主城区热岛效应空间识别

Spatial Recognition of Heat Island Effect in Kunming Central Area Based on Landsat8 Images

目前,对城市气候问题的研究已经成为城市气候学、城市设计学共同的研究热点。应用遥感数据对研究区的热岛效应进行探究识别,对下一步实现城市气候合理性的城市设计以及提升人居环境将起到关键作用。本文以昆明市主城区为例,应用遥感图像处理平台ENVI对遥感数据进行地表温度反演,应用ArcGIS进行空间分析,定量分析各冷热岛区的分布特征,总结各冷热岛区分布规律,对后续城市设计提出实现气候合理性的建议。

At present,the research on urban climate issues has become a common research hotspot of urban climatology and urban design.The remote sensing data is applied to investigate and identify the heat island effect in the study area,which plays a key role in the next step of urban design to achieve urban climate rationality and to improve the living environment.Taking the main urban area of Kunming as an example,this paper uses the remote sensing image processing platform ENVI to retrieve the surface temperature of remote sensing data,and uses ArcGIS for spatial analysis,quantitatively analyzes the distribution characteristics of each cold and hot island area,and summarizes the distribution laws of each cold and heat island area.Then it puts forward suggestions to achieve climate rationality for subsequent urban design.