城市“热岛效应”遥感监测研究——以珠海市为例

Research on Remote Sensing Monitoring of Urban Heat Island Effect:Taking Zhuhai City as an Example

为完成珠海市热岛效应与土地覆被相关性分析,利用多期Landsat遥感影像,基于单通道算法反演地表温度,基于指数法完成地表覆被类型提取分类,引入分布指数构建热岛分布指数P,分析珠海市热岛效应的分布与变化规律,实现地表覆被与热岛效应的空间关系相关性分析。研究结果表明:珠海市热岛效应强度2013—2021年间呈持续上升趋势,与城市建设用地增长趋势一致,与城市发展实际基本相符。

In order to complete the correlation analysis between the heat island effect and land cover in Zhuhai city,multiple period Landsat remote sensing images were used to invert surface temperature based on a single channel algorithm.Land cover types were extracted and classified using the index method.The distribution index was introduced to construct the heat island distribution index P to analyze the distribution and change patterns of the heat island effect in Zhuhai city,and achieve the spatial correlation analysis between land cover and heat island effect.The research results indicate that the intensity of the heat island effect in Zhuhai has shown a continuous upward trend from 2013 to 2021,consistent with the growth trend of urban construction land and basically consistent with the actual development of the city.